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Ataenius, Aphotaenius, and Pseudataenius of the United States and Canada (Coleoptera: Scarabaeidae: Aphodiinae)

OSCAR L. CARTWRIGHT

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 154 SERIAL PUBLICATIONS OF THE SMITHSONIAN INSTITUTION The emphasis upon publications as a means of diffusing knowledge was expressed by the first Secretary of the Smithsonian Institution. In his formal plan for the Insti- tution, Joseph Henry articulated a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This keynote of basic research has been adhered to over the years in the issuance of thousands of titles in serial publications under the Smithsonian imprint, com- mencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Annals of Flight Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoology Smithsonian Studies in History and Technology In these series, the Institution publishes original articles and monographs dealing with the research and collections of its several museums and offices and of professional colleagues at other institutions of learning. These papers report newly acquired facts, synoptic interpretations of data, or original theory in specialized fields. These pub- lications are distributed by mailing lists to libraries, laboratories, and other interested institutions and specialists throughout the world. Individual copies may be obtained from the Smithsonian Institution Press as long as stocks are available.

S. DILLON RIPLEY Secretary Smithsonian Institution SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 154

Ataenius, Aphotaenius, and Pseudataenius of the United States and Canada (Coleoptera: Scarabaeidae: Aphodiinae)

Oscar L. Cartwright

SMITHSONIAN INSTITUTION PRESS City of Washington 1974 ABSTRACT Oscar L. Cartwright. Ataenius, Aphotaenius, and Pseudataenius of the United States and Canada (Coleoptera: Scarabaeidae: Aphodiinae). Smithsonian Con- tributions to Zoology, number 154, 106 pages, 24 figures, 3 plates, 1974.—All known species are fully described; literature citations, synonyms, and a key to the species are provided; and known distribution is recorded and shown by map figures. All species previously ascribed to the area are listed, and the present status of each is presented. Twenty new species are added to the fauna. Ataenius waltnerhorni Balthasar is transferred to the genus Pseudataenius. The following are placed in synonymy: A. fleutiaui Paulian (=havanensis Bal- thasar), A. cribratus Van Dyke ( = confertus Fall), A. linelli Cartwright (=lan- guidus Schmidt), A. oblongus Horn (=sculptor Harold), A. sulcatula (Chevrolat) and A. frankenbergeri Balthasar (=brevicollis (Wollaston)), A. floridanus Brown and A. solitarius Blatchley {=rhyticephalus (Chevrolat)). Lectotypes are designated for Pseudataenius socialis (Horn), Ataenius in- sculptus Horn, A. ovatulus Horn, A. cylindrus Horn, A. aequalis Harold, A. sulcatulus (Chevrolat), and A. cognatus (LeConte). Neotypes are established for A. confertus Fall, A nocturnus (Nomura), A. texanus Harold, and A. strigatus (Say). New taxa are Pseudataenius contortus (Florida), Ataenius edistoi (South Carolina), A. parkeri (Arizona), A. rugopygus (Texas), A. duncani (Arizona), A. superficialis (Florida), A. pseudohirsutus (Texas), A. sabinoi (Arizona), A. vandykei (California), A. barberi (Arizona), A. nunenmacheri (Arizona), A. stroheckeri (Florida), A. glaseri (Maryland), A. punctifrons (Minnesota), A. utahensis (Utah), A. hesperius (Arizona), A. sciurus (Florida), A. woodruffi, (Florida), A. griffini (Texas), and A. stephani (Arizona).

OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. SI PRESS NUMBER 4820. SERIES COVER DESICN: The coral Montastrea cavernosa (Linnaeus).

Library of Congress Cataloging in Publication Data Cartwright, Oscar Ling. Ataenius, Aphotaenius, and Pseudataenius of the United States and Canada (Coleoptera: Scarabaeidae: Aphodiinae) (Smithsonian contributions to zoology, no. 154) 1. Ataenius. 2. Pseudataenius. 3. Aphotaenius carolinus. I. Title. II. Series: Smithsonian Institution. Smithsonian contributions to zoology, no. 154. QL1.S54 no. 154 [QL596.S3] 591'/08s [595.7'64] 73-6912

For sale by Che Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price $1.85 (paper cover) Contents

Page Introduction 1 Status of Names Used for Ataenius 5 Key to Species of Aphotaenius, Pseudataenius, and Ataenius of the United States and Canada 6 Aphotaenius carolinus (Van Dyke) 11 Pseudataenius walterhorni (Balthasar), new combination 12 Pseudataenius socialis (Horn) 14 Pseudataenius contortus, new species 16 Ataenius edistoi, new species 17 Ataenius saxatilis Cartwrigbt 18 Ataenius figurator Harold 19 Ataenius parkeri, new species 21 Ataenius rugopygus, new species 23 Ataenius duncani, new species 24 Ataenius alternatus (Melsheimer) 26 Ataenius insculptus Horn 27 Ataenius imbricatus (Melsheimer) 28 Ataenius superficialis, new species SO Ataenius miamii Cartwright 31 Ataenius havanensis Balthasar S3 Ataenius semipilosus Van Dyke 34 A taenius hirsutus Horn 36 Ataenius pseudohirsutus, new species 87 Ataenius sabinoi, new species 38 Ataenius vandykei, new species 39 Ataenius confertus Fall 40 Ataenius saramari Cartwright 41 Ataenius convexus Robinson 42 A taenius lobatus Horn 44 Ataenius cylindrus Horn 45 Ataenius oklahomensis Brown 47 Ataenius ovatulus Horn 48 Ataenius desertus Horn 49 Ataenius languidus Schmidt 50 Ataenius barberi, new species 51 Ataenius puncticollis (LeConte) 52 Ataenius nunenmacheri, new species 53 Ataenius stroheckeri, new species 54 Ataenius texanus Harold 56 Ataenius glaseri, new species 57 Ataenius punctifrons, new species 59 Ataenius utahensis, new species 61 Ataenius hesperius, new species 61 Ataenius abditus (Haldeman) 63 Ataenius exiguus Brown 64 Ataenius sciurus, new species 65 Ataenius gracilis (Melsheimer) 67 Ataenius nocturnus (Nomura) 69 Ataenius sculptor Harold 70 Ataenius woodruffi, new species 72 Ataenius robustus Horn 73

iii Page Ataenius simulator Harold 74 Ataenius erratus Fall 75 Ataenius inquisitus Horn 76 Ataenius griffini, new species 77 Ataenius aequalis Harold 78 Ataenius integer Harold 79 Ataenius stephani, new species 81 Ataenius platensis (Blanchard) 82 Ataenius picinus Harold 84 Ataenius brevicollis (Wollaston) 85 Ataenius rhyticephalus (Chevrolat) 86 Ataenius brevis Fall 87 Ataenius spretulus (Haldeman) 89 Ataenius wenzelii Horn 91 Ataenius cognatus (LeConte) 92 Ataenius rudellus Fall 93 Ataenius californicus Horn 94 Ataenius strigatus (Say) 95 Ataenius apicalis Hinton 98 Ataenius fattigi Cartwright 99 Literature Cited 101 Plates 104 Ataenius, Aphotaenius, and Pseudataenius of the United States and Canada (Coleoptera: Scarabaeidae: Aphodiinae)

Oscar L. Cartwright

Introduction 20 species described as new, type-localities of 6 are in Arizona, 5 in Florida, 4 in Texas, and 1 Ataenius includes many species of small, usually each in South Carolina, Maryland, Minnesota, elongate, black or reddish brown (though some- Utah, and California. Only 5 species—abditus, times gray or clay-colored), shining or dull, and gracilis, imbricatus, spretulus, and strigatus—are smooth or rarely pubescent scarab beetles averag- recorded from Canada, but it seems likely that ing about 4 mm or 5 mm in length. The smallest at least one or two more may occur there since are about 2.5 mm long, the largest about 6.5 mm. several others are found in bordering American Many but not all species are attracted to lights, states. Within the United States, Texas records 34 sometimes in such numbers as to be a nuisance. species, Florida 29, South Carolina 23, and Arizona Their life cycles are not well known but appar- 23. ently they are humus feeders in the soil, with a The genus Ataenius was named by E. von Harold few species attracted to decaying vegetation and (1867b:82) in describing Ataenius scutellaris from to animal dung. A very few have been taken in "Columbia." He placed the genus between "Eu- ant nests and animal burrows. Larvae of seven parius" and Rhyssemus. Since he mentioned "new species were described by Jerath (1960). genus" in this description of A. scutellaris, I con- The genus is worldwide, but by far the largest sider that species to be the type of the genus. In numbers of species are found in the Western the same paper, von Harold also placed in Ataenius Hemisphere and Australia. Over 300 species have the following four species: opatrinus, capitosus, been described, with perhaps the greatest number perforatus and hispidus. In the same year von from South America. Thus far only two species, Harold (1867c: 100) described the genus in a sep- A. picinus Harold and A. simulator Harold, are arate generic description and followed it with the known to have worldwide distribution. description of a single species, A. opacus. The first In this account I recognize 63 species of Ataenius reference takes precedence with A. scutellaris as the from the continental United States, three species type of the genus. of Pseudantaenius, and one species of Aphotaenius. Pseudataenius was proposed by Brown (1927) Species found in Hawaii are not included. Of the with Ataenius socialis Horn as the type of the genus. Aphotaenius was described by Cartwright Oscar L. Cartwright, Entomologist Emeritus, Department of (1952) with Ataenius carolinus Van Dyke as the Entomology, National Museum of Natural History, Smith- type of the genus. sonian Institution, Washington, D.C. 20560. The genus Ataenius is placed in the aphodiine

1 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY tribe Eupariini, as are Aphotaenius and Pseuda- eter. Examinations were made with the same micro- taenius, along with several other genera—Euparia, scope equipped with X 9 oculars and X 3, X 6, Euparixia,. Myrmecaphodius, and Saprosites— and X 9 objectives. found in the United States. The Eupariini agree The usual terminology, as indicated in Figure in having a moderately large, distinctly punctate 1, is used in the descriptions. Two new terms, head with very distinct genae usually bent down- "fluting" and "metasternal triangle," are intro- ward; the pronotum rarely with impressed mid- duced. Fluting describes the structure of the an- line, always without transverse furrows; front terior margin of the abdominal sterna. Metasternal tibiae usually with three teeth and anterior spur, triangle refers to the triangular depression in front middle and hind tibiae usually without transverse of the posterior coxal plates. As used in this paper, carinae; and the usually unexposed part of the the descriptive term "alutaceous" indicates surface pygidium furrowed basally with locking device sculpture of minute, shallow, contiguous pits or de- for the tips of the elytra. Ataenius is distinguished pressions as seen on the elytra of Ataenius wenzelii from other genera of the Eupariini by a combina- Horn and A. abditus (Haldeman). tion of characters, among them head narrower than Since in the past it has been practically impos- pronotum, anterior clypeus visible from above, sible to be sure of an identification in Ataenius pronotum laterally without denticles and at most without an examination of the type, I have made sparsely to moderately ciliate, sides of pronotum a serious effort to locate and examine types, prefer- not explanate, elytra often with basal margina- ably the holotype. Where only cotypes were avail- tion, front tibiae with slanted anterior margin, able a lectotype has been designated; and, for the middle and hind tibiae not flattened, uniformly same reason, four neotypes have been so labeled. wider from base, hind tibiae straight with outer The types of Ataenius confertus Fall, A. nocturnus apical angle spiniformly prolonged, tarsi normal (Nomura), A. texanus Harold, and A. strigatus with first segment often as long as the following (Say) have been lost and presumably destroyed. three segments combined. Except for these four species, I believe I have seen Aphotaenius has distinct oblique carinae on the types of all the species I have listed from the middle and hind tibiae and two triangular teeth United States and Canada (see listing of status of instead of the usual fringe of setae; however, the names used for Ataenius, below). pygidium has the basal furrow and other charac- Unless otherwise indicated, all paratypes are in ters of the Eupariini. In Pseudataenius the middle the National Museum of Natural History, Smith- and hind tarsi are one-third longer than their sonian Institution, Washington, D. C. tibiae, the maxillary palpi are elongate, males have ACKNOWLEDGMENTS.—Financial support, for the head weakly convex, short, and wide, the pro- which I am deeply grateful, was provided for this notum weakly convex with widely arcuate sides study by National Foundation Grant No. GB 1434. conspicuously fringed with setae, and the anterior I have examined specimens from practically spur usually abnormal; females are normal. See every major museum, university, college, and pri- remarks under Pseudataenius socialis. vate collection in the United States and Canada, The biology of Ataenius is practically unknown. as well as in many other countries. Nearly every Most of the ten or more species of this genus that fellow entomologist and colleague whom I have I have reared have been humus feeders, apparently known over the past forty years has added to the obtaining nourishment by ingesting the soil or study at some time. sand in which the adults were found and the eggs Museums, universities, and other institutions, were laid. One or two utilized old cow dung. Some and members of their staffs, that have been very successful rearings were obtained by placing adults helpful include the following: in pint jars of moist sterile sand mixed with small amounts of finely ground, dry-cereal breakfast INSTITUTIONS IN THE UNITED STATES AND CANADA Academy foods. of Natural Sciences of Philadelphia, Philadelphia, Pennsylvania (M. G. Emsley, Harold J. Grant, N. D. Jago, James A. G. Rehn). METHODS AND TERMINOLOGY.—All measure- Alabama Museum of Natural History, University, Alabama ments were made through a binocular microscope (Walter B. Jones). American Museum of Natural History, (A&O) equipped with an ocular linear microm- New York, New York (M. A. Cazier, Lee Herman, Jr., NUMBER 154

metasternal triangle

posterior femoral line

accessory spine

fluting

FIGURE 1.—a, Underside of Ataenius strigatus (Say), b, Lateral view of pronotum of A. parkeri, new species, c, Lateral view of pronotum of A. duncani, new species, d, Lateral and distal views of posterior tibia of A. picinus Harold, e, Middle femur of A. erratus Fall. /, Lateral and distal views of posterior tibia of A. erratus Fall, g. Lateral and distal views of posterior tibia of Aphotaenius carolinus (Van Dyke).

Jerome D. Rosen). Archbold Biological Station, Lake Placid, son, South Carolina (J. A. Berly, Frances McAlister). Cornell Florida (Richard Archbold, S. W. Frost). Arizona State University, Ithaca, New York (Henry Dietrich, L. L. Pechu- College, Tempe, Arizona (Richard S. Beal, Jr.). Bernice P. man). Delta Branch Experiment Station, Stoneville, Missis- Bishop Museum, Honolulu, Hawaii (£. H. Bryan, Jr., J. L. sippi (R. H. Roberts). East Tennessee State University, Gressitt, G. A. Samuelson). Burke Museum, University of Johnson City, Tennessee (Wallace A. Tarpley). Emory Uni- Washington, Seattle, Washington (Melville H. Hatch). Cali- versity Museum, Emory University, Georgia (P. W. Fattig). fornia Academy of Sciences, San Francisco, California (J. W. Field Museum of Natural History, Chicago, Illinois (H. Green, Hugh B. Leech). Canada Department of Agriculture, Dybas, R. Wenzel). Florida Department of Agriculture, Ottawa, Canada (E. C. Becker, W. J. Brown, Milton Camp- Gainesville, Florida (R. E. Woodruff). Indiana University, bell, H. F. Howden). Carnegie Museum, Pittsburgh, Pennsyl- Bloomington, Indiana (Frank N. Young). Illinois Natural vania (George Wallace). Carthage College, Kenosha, Wisconsin History Survey, Urbana, Illinois (M. W. Sanderson). Iowa (Walter R. Suter). Cincinnati Museum of Natural History, State College, Ames, Iowa (Jean L. Laffoon). Iowa Wesleyan Cincinnati, Ohio (Ralph Dury). Clemson University, Clem- College, Mount Pleasant, Iowa (H. E. Jaques). Kansas State SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

University (KSU), Manhattan, Kansas (Howard E. Evans). Wellington, New Zealand (R. G. Ordish). Institut National Los Angeles County Museum, Los Angeles, California (C. L. de la Recherche Agronomique, Petit-Bourg, Guadeloupe (J. Hogue). Michigan State University, East Lansing, Michigan Bonhls, L. Gruner). Instituto Biologico, Sao Paulo, Brazil (J. (Roland L. Fischer). Museum of Comparative Zoology (MCZ), P. da Fonseca). Instituto de Biologia, Cidade Universitaria, Cambridge, Massachusetts (E. A. Chapin, P. J. Darlington, Recife, Brazil (M. C. Arcanjo). Instituto de Biologia, Havana, Jr., J. F. Lawrence, R. E. Morel). Museum of Zoology, Uni- Cuba (Fernando de Zayas). Kyushu University, Kyushu, versity of Michigan, Ann Arbor, Michigan (T. H. Hubbell). Japan (Teiso Esaki). Museum G. Frey, Tutzing bei Munchen, National Museum of Natural History [under the catalog Germany (M. von Falkenhayn, G. Frey, G. Haaf). Museum numbers of the United States National Museum (USNM)]. National d'Histoire Naturelle, Paris, France (Mme. Bons, Smithsonian Institution, Washington, D.C. North Carolina G. Colas, Mile. Suzanne Marre, R. Paulian, A. Villiers). Department of Agriculture (C. S. Brimley, D. L. Wray). Museo de Historia Natural, Javier Prado, Lima, Peru North Dakota State University, Fargo, North Dakota (Robert (F. BlancasS.). Museum fur Naturkunde, der Humboldt- G. Helgesen, R. L. Post). Northwestern University, Evanston, Universitat zu Berlin (F. Hieke). The National Science Illinois (Orlando Park). Ohio State University (OSU), Colum- Museum, Tokyo, Japan (T. Nakane). Naturhistorisches Mu- bus, Ohio (Paul H. Freytag, J. N. Knull, C. A. Triplehorn). seum, Vienna, Austria (F. Janczyk, Rudolf Petrovitz). Natur- Pennsylvania Bureau of Plant Industry, Harrisburg, Pennsyl- historiska Riksmuseet, Stockholm, Sweden (Gunner Hallin, vania (E. E. Simons). Pennsylvania Department of Agricul- Karl Johan Hedqvist, Rene Malaise, Per Inge Persson). ture, Harrisburg, Pennsylvania (Larry D. Rhoads). Purdue Norodni Muzeum V. Praze, Prague, Czechoslovakia (L. University, Lafayette, Indiana (Ross H. Arnett, Leland Haberlandt, J. Jclfnck). Rijksmuseum van Naturlijke His- Chandler, Ray T. Everly). Rutgers University, New Bruns- toric, Leiden, Netherlands (J. Krikken). The Rockefeller wick, New Jersey (J. B. Smith). South Dakota State Univer- Foundation, Bogota, D. E., Colombia (Robert F. Ruppel). sity, Brookings, South Dakota (E. U. Balsbaugh, Jr., H. C. Staatliches Museum fur Tierkunde, Dresden, D.D.R (R. Severin). Southern Illinois University, Carbondale, Illinois Hertel, R. Krause). Ungarischen Naturwissenschaftlichen (John C. Downey). State of Maine Forest Service, Augusta, Museum, Budapest, Hungary (S. Endrodi). U.N./S.P.C. Maine (A. E. Brower). Tall Timbers Research Station, Talla- Rhinoceros Beetle Project, Apia, W. Samoa (A. Catley). hassee, Florida (E. V. Komarek). Texas Technological College, Universidad Central de Venezuela, Caracas, Venezuela (F. Lubbock, Texas (James Reddell). United States Department Fernandez-Yepez, C. J. Rosales, J. A. Roze). Universidad de of Agriculture (USDA), Washington, D.C. Universite Laval, Concepci6n, Concepci6n, Chile (T. Cekalovic-K.). University Quebec, Canada (R. Beique). Universite de Montreal, Mon- of Bristol, Bristol, England (H. E. Hinton). University of treal, Canada (A. Roberts). University of Alberta, Edmonton, Puerto Rico, Mayaguez, Puerto Rico (J. M. Capriles, J. A. Canada (G. E. Ball, D. R. Whitehead). University of Arizona, Ramos). University of Puerto Rico, Rto Piedras, Puerto Rico Tucson, Arizona' (G. D. Butler, Jr., Floyd G. Werner). Uni- (E. G. Matthews). University of Queensland, Brisbane, Aus- versity of Arkansas, Fayetteville, Arkansas (L. H. Ralston). tralia (T. E. Woodward). Zoological Institute, Lund, Sweden University of California, Berkeley, California (Paul D. Hurd, (Bengt-Olof Landin). Zoologische Sammlung des Bayerischen W. J. Turner). University of California, Davis, California Staates, Munich, Germany (Heinz Freude). Zoologisch Mu- (A. T. McClay). University of California, Riverside, Cali- seum der Universiteit van Amsterdam (J. P. Duffels). fornia (Saul Frommer, Alan Hardy). University of Delaware, Newark, Delaware (W. A. Connell). University of Idaho, Material has been examined from the following Moscow, Idaho (W. F. Barr). University of Illinois, Urbana, Illinois (Richard B. Selander). University of Kentucky, Lex- private collections: ington, Kentucky (T. C. Barr). University of Louisville, Louisville, Kentucky (C. V. Covell, Jr.). University of Kansas Patricia H. Adams, M. Alvarenga, R. H. Arnett, John R. (U.Kans.), Lawrence, Kansas (W. D. Edmonds). University Baker, V. Balthasar, W. F. Barr, R. S. Beal, B. Benesh, C. R. of Miami, Coral Gables, Florida (H. F. Strohecker). Univer- Biederman, C. M. Biezanko, Carlos Bordon-A., L. J. Bottimer, sity of Minnesota, St. Paul, Minnesota (E. F. Cook). Uni- Harold E. Box, Carlos S. Carbonell, C. C. Chantal, J. F. Gates versity of Missouri, Columbia, Missouri (Wilbur R. Enns). Clarke, R. H. van Doesburg, Jr., Byrd K. Dozier (B.K.D.), University of Nebraska, Lincoln, Nebraska (B. C. Ratcliffe). Herbert Dozier, R. R. Dreisbach, D. K. Duncan, M. Drucken- University of Vermont, Burlington, Vermont (R. T. Bell). brod, Ralph Dury, Truman Fincher, O. S. Flint, Everett J. Utah State University, Logan, Utah (George F. Knowlton). Ford, Jr., Henry Frania, R. J. Frederick, R. C. Froeschner, John D. Glaser, R. Gordon, Robert C. Graves, J. W. Green, INSTITUTIONS IN OTHER COUNTRIES The British Museum Charles W. Griffin, Paul D. Harwood, R. L. Hoffman, H. F. (Natural History), London, England (J. Balfour-Browne, E. Howden, O. E. Hunt, Federico Islas-S., Monohar L. Jerath, B. Britton. J. P. Doncaster, R. D. Pope). Colegio de Post- Vernon M. Kirk, Borys Malkin, Sizumu Nomura, A. T. Mc- graduados, Chapingo, Mexico (Francisco Pacheco). C.S.I.R.O., Clay, G. H. Nelson, F. W. Nunenmacher, Virgil H. Owens, Canberra, Australia (K. H. L. Key, M. S. Upton). Depart Frank H. Parker, C. R. Patrick, III, Jerry A. Payne, Fritz mento de Zoologia, Sao Paulo, Brazil (Karol Lenko, Silverio Plaumann, E. Avery Richmond, C. V. Riley, John H. Robin- Pereira, Ernesto Rabello, Hans Rcichardt). Department of son, Mark Robinson, William Rosenberg, J. H. Russell, Grace Agriculture, Station Paget East, Bermuda (I. W. Hughes). Sandhousc, L. W. Saylor, Joe Schuh, J. B. Smith, Paul and Deutsches Entomologisches Institut, Berlin, D.D.R. (H. Phyllis Spangler, Ordway Starnes, Harrison R. Steeves, Jr., Dobler, G. Friese, R. Gaedike, F. Hieke). Dominion Museum, Karl H. Stephan, W. H. Tyson. J. B. Wallis, Thomas Walker, NUMBER 154

Jr., E. Walz, Floyd G. Werner, Charles E. White, L. A. Willa- Named used Present status han, R. E. Woodruff. cylindricus Schmidt, 1922:454 misspelling of cylindrus Horn Among the artists, preparators, and typists who cylindrus Horn, 1871:289 valid have assisted in various ways in the preparation of darlingtoni Hinton, 1937b: 179 synonym of picinus specimens and manuscripts are Elsie Froeschner, Harold A. Pizzini, Janice Foster White, Gloria House, desertus Horn, 1871:289 valid duncani, new species valid Gordon Brooks, Phyllis Spangler, and Joan B. edistoi, new species valid Miles. erratus Fall, 1930:96 valid To all who have contributed in any way I give exiguus Brown, 1932:10 valid my sincere thanks. falli Hinton, 1934:119 synonym of spretulus (Haldeman) fattigi Cartwright, 1948:151 valid Status of Names Used for Ataenius figurator Harold, 1874:24 valid floridanus Brown, 1930:3 synonym of rhytiee- Many names that have been used for Ataenius phalus (Chevrolat) occurring in the United States and Canada are frankenbergeri Balthasar, 1938:56 synonym of brevicollis Wollaston now recognized synonyms. Others have been used glaseri, new species valid through misidentifications and should be removed gracilis (Melsheimer), 1844:137 valid from our lists. Lists and catalogs published by griffini, new species valid Melsheimer, Gemminger and Harold, Haldeman, haroldi Steinheil, 1872:556 ex Argentina; not in LeConte, Crotch, Austin, Henshaw, Leng, and USA havanensis Balthasar, 1938:55 valid Blackwelder are among those consulted. My opin- hesperius, new species valid ions regarding the present status of all the names hirsutus Horn, 1871:288 valid used or now proposed are as follows: horni Harold, 1874:19 synonym of cylindrus Horn Named used Present status imbricatus (Melsheimer), 1844:136 valid abditus (Haldeman), 1848:106 valid inops Horn, 1887:73 synonym of puncti- aequalis Harold, 1880:40 valid collis (LeConte) alternans Dejean, 1836:163 Pnomen nudum? =• inquietus Fall, 1930:94 lapsus for inquisitus alternatus Horn (Melsheimer) inquisitus Horn, 1887:81 valid alternatus (Melsheimer), 1844:137 valid insculptus Horn, 1887:70 valid anticus Fall, 1930:105 synonym of platensis integer Harold, 1868:86 valid (Blanchard) laeviventris Horn, 1887:74 synonym of lobatus apicalis Hinton, 1937b: 195 valid Horn attenuator Harold, 1874:22 ex Colombia; not in languidus Schmidt, 1910:31 valid USA lecontei Harold, 1874:20 synonym of ovatulus barberi, new species valid Horn brevicollis Wollaston, 1854:229 valid linelli Cartwright, 1944:28 synonym of languidus brevinotus Chapin, 1940:39 ex Cuba; not in USA Schmidt brevis Fall, 1930:98 valid lobatus Horn, 1871:287 valid brimleyi Wray, 1967:45 nomen nudum lucanus Horn, 1871:288 Baja California; not californicus Horn, 1887:84 valid in USA carolinus Van Dyke, 1928:157 Aphotaenius ludovicianus Fall, 1930:100 synonym of wenzelii chiliensis Solier, 1851:72 synonym of gracilis Horn (Melsheimer) miamii Cartwright, 1934:200 valid cognatus (LeConte), 1858:65 valid nocturnus (Nomura), 1943:77 valid confertus Fall, 1909:162 valid nunenmacheri, new species valid consors Fall, 1930:104 synonym of spretulus oblongus Horn, 1871:286 synonym of sculptor (Haldeman) Harold contortus, new species Pseudataenius oklahomensis Brown, 1930:4 valid convexus Robinson, 1940:149 valid ovatulus Horn, 1871:286 valid crenatostriatus Sturm, 1843:111 PMexico; not in USA parkeri, new species valid cribratus Van Dyke, 1928:156 synonym of confertus picinus Harold, I867a:281 valid Fall platensis (Blanchard), 1846:185 valid SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Named used Present status Named used Present status pseudohirsutus, new species valid solitarius Blatchley, 1928:69 synonym of rhytice- puncticollis (LeConte), 1858:65 valid phalus (Chevrolat) punctifrons, new species valid sordidus Harold, 1869:103 synonym of imbricatus rhyticephalus (Chevrolat), 1864:413 valid (Melsheimer) robustus Horn, 1871:285 valid spretulus (Haldeman), 1848:106 valid rudellus Fall, 1930:103 valid stephani, new species valid rugopygus, new species valid stercorator (Fabricius), 1775:20 South America; not in sabinoi, new species valid USA salutator Fall, 1930:99 synonym of picinus strigatus (Say), 1823:212 valid Harold strigicauda Bates, 1887:96 ex Mexico; not in saramari Cartwright, 1939:360 valid USA saxatilis Cartwright, 1944:29 valid stroheckeri, new species valid schwarzi (Linell), 1896:721 synonym of simulator sulcatulus (Chevrolat), 1864:413 synonym of brevicollis Harold Wollaston sciurus, new species valid superficialis, new species valid sculptilis Harold, 1868:86 ex Venezuela; not in texanus Harold, 1874:23 valid USA utahensis, new species valid sculptor Harold, 1868:85 valid vandyhei, new species valid semipilosus Van Dyke, 1928:158 valid waltherhorni Balthasar, 1938:55 Pseudataenius simulator Harold, 1868:85 valid wenzelii Horn, 1887:77 valid socialis Horn, 1871:287 Pseudataenius woodruffi, new species valid

Key to Species of Aphotaenius, Pseudataenius, and Ataenius of the United States and Canada 1. Middle and hind tibiae with distinct oblique carinae as in Aphodius, two triangular teeth instead of usual fringe of terminal setae. (Indiana, Ohio, Maryland to Florida 1. Aphotaenius carolinus (Van Dyke) Middle and hind tibiae without oblique carinae, tibiae with usual fringe of terminal setae 2 2(1). Middle and hind tarsi one-third longer than their tibiae, maxillary palpi elongate; males with head weakly convex, short and wide, pronotum weakly convex, widely arcuate sides, conspicuous fringe of setae, anterior spur usually abnormal. (Pseu- dataenius spp.) 3 Tarsi normal. Other characters not as above. (Ataenius spp.) 5 3(2). Male anterior spur long, hooked or contorted, fore tibiae with one or two teeth, metasternal patch of setigerous punctures not conspicuous or nonexistent 4 Male with normal straight spur, tibiae with normal three teeth, a strong, conspicuous metasternal patch of setigerous punctures; female clypeus finely transversely wrinkled anteriorly only. (Florida, Louisiana, Pennsylvania) 2. Pseudataenius waltherhorni Balthasar 4(3). Male anterior spur long, parallel, hooked apically, two teeth on anterior tibia, posterior pronotal angles not emarginate; female clypeus strongly, transversely wrinkled throughout, pronotal punctures strong. (Louisiana, Texas to Nebraska) 3. P. socialis (Horn) Male anterior spur long, twisted, widened anteriorly and bent inward, tibia with apical tooth only, metasternal setigerous punctures few or none, posterior pronotal angles very slightly emarginate; female clypeus not or sometimes weakly wrinkled on disc, pronotal punctures moderate. (Southeastern states) 4. P. contortus, new species 5(2). "Pygidium smooth, polished, convex (a few moderate punctures in Ataenius edistoi, new species; some scabrous punctate rugosity in A. rugopygus, new species); integu- ments strongly shining; femora, metasternum, and abdominal sterna impunctate 6 Pygidium eroded, alutaceous, concave, or at least closely scabrously punctate basally .11 6(5). Clypeus broadly rounded each side of shallow median emargination, without trace of clypeal denticles; tip of hind tibia rather suddenly expanded; species broader than others in figurator complex 7 NUMBER 154

Clypeus with dypeal teeth, or at least slight but discernible angulations if broadly rounded each side 8 7(6). Pygidium with a few shallow, moderate punctures; strong, noticeably mixed pronotal punctures, close and evenly distributed throughout. (South Carolina) 5. Ataenius edistoi, new species Pygidium polished, only inconspicuous, fine, scattered punctures; pronotal punctures very moderate and widely scattered. (Georgia, South Carolina, North Carolina) 6. A. saxatilis Cartwright 8(6). Clypeus strongly dentate or angulate 9 Clypeus broadly rounded each side of shallow emargination with very weak to scarcely noticeable angulations. (Eastern states west to New Mexico, Texas, and Oklahoma) 7. A. figurator Harold 9(8). Very elongate, parallel, reddish, ratio width to length, 0.355:1.00, parallel-sided; posterior pronotal angles obliterated, very broadly rounded from sides into base; pronotal punctures few, scattered, almost completely lacking in anterior discal area and in posterior angles. (Arizona) 8. A. parkeri, new species Nearly black, ratio width to length, 0.383:1.00; pronotal punctures numerous 10 10(9). Pygidium scabrous-punctate at base; pronotal punctures numerous, close, moderately coarse; head punctures, close, moderate, extending down into rugosity of dypeus, the usual intervening band of fine punctures almost completely missing. (New Mexico, Arizona, Texas) 9. A. rugopygus, new species Pygidium smooth, polished but very finely punctate; pronotal punctures numerous, very moderate in size; frontal band of fine punctures between basal coarse band and clypeal rugosity. (Kansas, Arizona) 10. A. duncani, new species 11(5). Elytra subopaque, opaque, argillaceous or pubescent (short and inconspicuous in A. confertus Fall) 12 Elytra shining (alutaceous in A. wenzelii Horn) 23 12(11). Intervals of elytra convex and alternately higher, at least on apical declivity 13 Elytral intervals usually flat or weakly convex, not alternately higher over apical fifth 14 13(12). Clypeal and frontal punctures moderately coarse, elongate-oval; pronotum moderately coarsely and uniformly punctate; distinctly opaque; elytral intervals alternately higher even on disc and apex. (Southeastern states, North Carolina to Texas) II. A. alternatus Melsheimer Clypeal punctures very fine, round; punctures of pronotum mixed, coarse and fine; subopaque; elytral intervals alternately higher only on apical fifth; first segment of posterior tarsus nearly twice as long as long spur. (New Jersey to Florida to Mis- sissippi) 12. A. insculptus Horn 14(12). Alutaceous or argillaceous species 15 Pubescent, weakly shining species 18 15(14). Elytra elongate, twice as long as wide; intervals flat with row of short coarse setae. (Canada and eastern United States to South Dakota and Texas) 13. A. imbricatus Melsheimer Elytra shorter, intervals weakly to strongly convex, setae frequently inconspicuous 16 16(15). Elytral intervals weakly convex, partly to completely argillaceous; striae usually in part quite wide and shiny. (Florida Keys) II. A. superficial, new species Elytral intervals subcarinately or tectiformly convex; one-third longer than wide; striae normal, not especially shining between fine punctures; without argillaceous coat- ing 17 17(16). Basal punctures of pronotum only slightly larger than in anterior median area; elytral intervals subcarinate, the ridge usually rounded and not shining. (Illinois and coastal states from New York to Texas) 15. A. miamii Cartwright Basal punctures crowded and twice the size of those in anterior median area; elytral intervals strongly tectiform with ridges shining. (Florida) 16. A. havanensis Balthasar 18(14). Pubescence long and fine 19 Pubescence short and usually inconspicuous 20 19(18). Pronotum more or less uniformly punctate, the punctures somewhat finer in front. (Arizona, Texas) 17. A. semipilosus Van Dyke SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Pronotal punctures mixed, fine and very coarse. (Kansas, Texas to Arizona) 18. A. hirsutus Horn 20(18). Pronotal punctures closely spaced and more or less uniform in size 21 Pronotal punctures distinctly of two sizes, mixed coarse and fine; elytral intervals weakly convex, appearance smooth but very finely, not closely punctate. (Texas, Arizona) 19. A. pseudohirsutus, new species 21(20). Pronotum coarsely, closely punctate; elytral intervals subcarinate; clypeus not dis- tinctly dentate. (Arizona) 20. A. sabinoi, new species Pronotum densely, moderately punctate; clypeus dentate 22 22(21). Elytral intervals with median row of tubercles with alutaceous sculpture along each side. (California) 21. A. vandykei, new species Elytral intervals convex with row of close, quite coarse punctures along outside edge. (New Mexico, Arizona) 22. A. confertus Fall 23(11). Margins of elytra noticeably fimbriate 24 Margins of elytra not noticeably fimbriate 25 24(23). Pronotum evenly moderately punctate; posterior femoral line deep and entire. (Florida) 23. A. saramari Cartwright Larger pronotal punctures unevenly distributed, largely lacking medioanteriorly; posterior femoral line short or absent. (Texas) 24. A. convexus Robinson 25(23). Base of pronotum noticeably lobed; abdominal sterna nearly smooth; posterior tibia with strong heavy accessory spine; large species (5.5 mm). (Arizona and California) .... 25. A. lobatus Horn Base of pronotum not noticeably lobed 26 26(25). Clypeal margin distinctly denticulate or strongly angulate each side of median emargi- nation 27 Clypeal margin broadly rounded each side of median emargination, sometimes very weakly subdentate 42 27(26). Marginal line of posterior femur deep and entire 28 Marginal line short or absent, or weakly impressed if entire 30 28(27). Pronotum with intermixed fine punctures, the coarse punctures less dense anteriorly at middle 29 Pronotum densely punctate base to apex without intermixed fine punctures; elytral intervals frequently with traces of a groove each side along the striae. (Eastern states) 26. A. cylindrus Horn 29(28). Pronotum densely, uniformly punctate over outer third; elytral intervals subcarinate over posterior third, the intervals strongly eroded each side. (Oklahoma, Arkansas, Texas) 27. A. oklahomensis Brown Pronotal punctures less dense, mixed, over outer third; elytral intervals convex over apical fourth. (Southeastern states) 28. A. ovatulus Horn 30(27). Posterior marginal femoral line weakly impressed; color ferruginous; pronotum coarsely, sparsely, irregularly punctate with fine punctures intermixed; abdomen with very few punctures. (Southwestern states) 29. A. desertus Horn Posterior marginal line short or absent 31 31(30). Pronotal punctures dense, more or less uniform in size 32 Pronotal punctures mixed, disc with widely scattered, moderate to coarse punctures and intermixed, more closely spaced, fine punctures; abdominal sterna each side with three or four long semierect hairs. (Florida, Alabama) 30. A. languidus Schmidt 32(31). Clypeal punctures dense, elongate especially laterally, elytral intervals convexly higher along exterior margin, inner side flatter and alutaceous. (Arizona, Texas) 31. A. barberi, new species Clypeal punctures round, not elongate S3 33(32). First segment of posterior tarsus noticeably narrowed from middle to base and shorter than long spur. (Texas to California) 32. A. puncticollis (LeConte) First segment usually as long or longer than long spur, if not, then parallel-sided or gradually tapering from base to apex S4 34(33). Small shining species, 3.6 mm long, or less, lateral intervals noticeably and usually roughly punctate, outside rows of punctures on intervals 7 and 8 very close, separated by their diameter or less 35 NUMBER 154

Usually larger, frequently alutaceous, not roughly punctate; outside rows of punctures on intervals 7 and 8 usually separated by three or more times their diameters 36 35(34). Punctures of front and upper dypeus uniform in size. (Arizona) 33. A. nunenmacheri, new species Punctures of front larger than on upper clypeus, appearing as a band of coarser punctures. (Florida) 34. A. stroheckeri, new species 36(34). Suture between 4th and 5th abdominal sterna deep, moderately wide, with edges parallel and extending completely from side to side; averaging about 3.7 mm in length. (Kansas, Oklahoma, Texas) 35. A. texanus Harold Suture between 4th and 5th abdominal sterna not as wide at sides as at middle 37 37(36). Smooth, shining species 38 Surface usually alutaceous or microreticulate 41 38(37). Rugose sculpture of clypeus extending up over middle convexity; average size about 4 mm. (Maryland, Virginia) 36. A. glaseri, new species Rugose sculpture of clypeus rarely to middle of the convexity 39 39(38). Punctures of upper clypeus and frontal area minute, very fine, or absent 40 Punctures of upper clypeus and frontal area dense, fine to moderate, same size as those of anterior pronotum. (Generally distributed except southeastern states) 37. A. punctifrons, new species 40(39). Punctures of anterior angles and lateral fovea of pronotum noticeably larger and closer than elsewhere; elytral intervals convex. (Utah) 38. A. utahensis, new species Punctures of pronotum more or less uniform in size and distribution; elytral intervals only moderately convex. (Western and southwestern states) 39. A. hesperius, new species 41(37). Length 35 mm, basal punctures of head shading in size into those of clypeus, basal band of punctures rarely distinct; clypeus distinctly punctate at middle, dypeal rugae moderate. (Eastern states) 40. A. abditus Haldeman Length 3.0 mm or less; basal band of closer, larger punctures distinct; clypeus rela- tively smooth at middle, clypeal rugae fine. (South Carolina to Florida to Mis- sissippi) 41. A. exiguus Brown 42(26). Pronotum usually short, hardly more than one-third as long as elytra; anterior femur thin, oblong, with fine marginal groove; posterior femur slender. (Squirrel nests, Florida) 42. A. sciurus, new species Pronotum not unusually short, almost one-half as long as elytra 43 43(42). Punctures of head united in short longitudinal lines; small, slender, elongate species; elytral intervals strongly convex 44 Head punctures simple 45 44(43). Middle femur with strong complete marginal line; elytral intervals almost carinate. (South Dakota to Texas and east to Atlantic coast) 43. A. gracilis (Melsheimer) Middle femur with short, abbreviated marginal line; elytral intervals evenly rounded. (California, Arizona) 14. A. noctumus (Nomura) 45(43). Large species, 5.3-6.4 mm; head and pronotum rather coarsely punctate; elytral striae strong, moderately wide, quite corasely, deeply punctate; elytral intervals cariniformly convex; posterior pronotal angles slightly emarginate 46 Size usually smaller (A. stephani, 4.8-5.8 mm), elytral characters different 47 46(45). Head and pronotum closely, evenly punctate; a row of close moderate punctures each side of the median convex carina of the elytral intervals. (Arizona, California) 45. A. sculptor Harold Head with coarse punctures basally and extending downward as a patch each side on upper clypeus, clypeus weakly, transversly wrinkled anteriorly; median, smooth, strongly convex carina of intervals bordered each side by a fine groove which becomes minutely, noticeably alutaceous over apical declivity. (Florida) 46. A. woodruffi, new species 47(45). Elytral intervals flat, densely punctate, the punctures nearly as coarse as those of the pronotum. (North-central states) 17. A. robustus Horn Intervals usually at least weakly convex; rarely noticeably punctate 48 48(47). Clypeus strongly rugose-granulate; posterior femora nearly half as wide as long and without marginal line. (Southeastern states) 48. A. simulator Harold 10 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Clypeus sometimes weakly transversely wrinkled but not strongly so 49 49(48). Accessory spine of middle and hind tibiae closely adjacent to the shorter spur, without intervening setae of the terminal fringe 50 Accessory spine more removed from the spurs, one of the setae of the terminal fringe intervening 51 50(49). Abdominal sterna finely punctate at middle; posterior tibial fringe of ten or more setae; large species, length 4.5-5.8 mm. (South Carolina, Georgia, Florida) 49. A. erratus Fall Abdominal sterna coarsely punctate at middle; metasternum with an irregular series of coarse punctures extending inward from sides to the central flattened area; pos- terior tibia with fringe of five setae, accessory spine strongly developed; 4.5 mm or less. (Texas) 50. A. inquisitus Horn 51(49). Base of head with fine or mixed fine and moderate scattered punctures 52 Base of head with transverse band of coarse punctures 56 52(51). Head smooth, with punctures all very fine, uniformly distributed throughout; small suboval species 3.5 mm in length. (Texas) 51. A. griffini, new species Head transversely wrinkled anteriorly 53 53(52). Pronotal punctures close, mixed throughout, quite uniformly distributed but slightly closer in anterior and posterior angles and all finer at middle; posterior angles very slightly emarginate; accessory spine very short, one-half length of fringe; posterior femoral line best seen from rear; extreme lateral interval wider than usual and with row of shiny granules on alutaceous flat base; occipital punctures very fine. (Louisi- ana) 52. A. aequalh Harold Not as above 54 54(53). Base of head with mixed coarse and fine punctures; coarse pronotal punctures well separated, usually by one and one-half to two times their diameter, evenly distributed including anterior median area; abdominal sterna strongly punctate laterally, the median smooth area relatively narrower than in A. platensis; metasternal triangle deep, alutaceous; tip of anterior spur hooked downward in male. (Florida, Texas) 53. A. integer Harold Base of head with fine or very moderate punctures; coarse pronotal punctures absent or very few in anterior median area 55 55(54). Robust species, 4.8-5.8 mm in length; anterior femur smooth, very minutely punctate; middle and posterior femora without or rarely with traces of a marginal line. (Ari- zona) 54. A. stephani, new species Slender species, about 4.2 mm in length; anterior femora with scattered, fine-to-moderate punctures; middle and hind femora with distinct marginal line at knee; tip of anterior spur bent downward in male. (Texas and Oklahoma eastward) 55. A. platensis (Blanchard) 56(51). Ninth elytral interval finely, closely punctate; sides of pronotum crenate anteriorly; posterior tibial fringe invariably of four setae; anterior femur with a few coarse punctures at elbow. (South Carolina to Texas) 56. A. picinus Harold Ninth interval not differing from others 57 57(56). Posterior angles of pronotum sinuate-emarginate; clypeus smooth, polished, strongly convex; pronotal punctures moderate, well-separated everywhere; elytral intervals eroded and alutaceous each side over apical fifth. (Florida, Mississippi, Texas) 57. A. brevicollis Wollaston Posterior angles obtusely rounded 58 58(57). Metasternum with a small group of coarse punctures each side of median line close behind middle coxae; humerus and lateral elytral intervals coarsely roughly punctate. (South Carolina, Florida) 58. A. rhyticephalus (Chevrolat) Humeri not coarsely punctate 59 59(58). Elytra relatively short and convex, one-third longer than wide, sides distinctly arcuate; tenth elytral interval finely alutaceous, flat or slightly convex, not as convex as ninth; median metasternal line shorter than first two visible abdominal sterna at middle; length 3.5-4.3 mm. (Appalachian region) 59. A. brevis Fall Elytra more oblong-elongate, one-half longer than wide 60 60(59). Posterior face of profemur sparsely finely punctate and relatively smooth, rarely three or four shallow coarse punctures 61 NUMBER 154 11 Posterior face of profemur coarsely, often roughly punctate 65 61(60). Coarse punctures of pronotum generally distributed but everywhere sparse and very little closer laterally; strong posterior femoral line one-half distance from knee to trochanter; usually five setae in posterior tibial fringe. (All but seven states) 60. A. spretulus (Haldeman) Coarse punctures of pronotum everywhere numerous, including anteromedial area ... 62 62(61). Elytral intervals usually flat, alutaceous on disc; male anterior spurs incurved at tip; posterior angles of pronotum very broadly rounded. (Coastal areas, Pennsylvania to Texas) 61. A. wenzetii Horn Elytral intervals rarely alutaceous 63 63(62). Posterior femoral line absent or with a very short line at knee; abdominal sterna punc- tate at middle; male anterior spur not incurved at tip; length 4.0-5.8 mm. (Kansas, Oklahoma, Louisiana to California) 62. A. cognatus (LeConte) Posterior femoral line weak but plainly visible from behind, at least one-third distance from knee to trochanter; anterior tibial spur of male incurved at tip 64 64(63). Small, narrow species, length 3.5 mm. (Florida) 63. A. rudeUus Fall Coarse punctures of pronotum relatively much larger, abdominal sterna nearly smooth at middle; length 4.0-4.7 mm. (California, Arizona, Utah) 64. A. califomicus Horn 65(60). Clypeus with noticeable transverse rugulae; posterior tibia with fringe of four or five setae; usually at least a few coarse punctures coalescing in anterior angles of pronotum. (More northern distribution; all except far western states) 65. A. strigatus (Say) Clypeus finely punctate, transverse rugulae absent or very weakly developed; posterior tibial fringe of six to eight setae. (More southern distribution) 66 66(65). Apical declivity of elytra with intervals eroded each side; posterior femora with row of three or four noticeable, coarse setigerous punctures at knee. (Eastern states) 66. A. apicalis Hinton Elytral intervals normal on apical declivity; posterior femora without coarse setigerous punctures at knee. (Wisconsin and Texas to east coast) .... 67. A. fattigi Cartwright

1. Aphotaenius carolinus (Van Dyke) striate, striae strongly crenate punctate, intervals moderately convex, minutely punctate. Covered Ataenius carolinus Van Dyke, 1928:157. basal portion of pygidium deeply grooved under Aphodius carolinus.—Hinton, 1937b: 196. Aphotaenius carolinus.—Cartwright, 1952:182; 1958:134; 1963: tips of elytra, exposed portion with depressed 49. eroded area divided by a longitudinal carina. Posterior prosternal spine strongly developed, lat- DESCRIPTION.—Length 2.5 to 3.1 mm; width 0.95 erally compressed. Mesosternum closely, moder- to 1.3 mm. Piceous black, shining, head anteriorly ately punctate. Metasternum quite closely coarsely and legs reddish, antennae and palpi testaceous. punctate, median longitudinal line deep. Second Head three-fourths as wide as pronotum, strongly abdominal sternum closely, shallowly setigerously convex, basally with a band of coarse punctures, punctate along anterior margin, carinate between front finely punctate, anterior smooth, impunctate; the coxae; remaining sterna smooth, coarsely, deep- clypeus with finely refiexed margin, bidentate, ly fluted in front. Posterior femoral line obsolete, teeth strongly developed, acutely pointed and only faintly indicated, middle femoral line and widely separated, slightly emarginate between teeth, anterior ventral line of profemur wide, deep, and margin flattened and dorsally angulately widened, noticeably alutaceous. Anterior tibiae tridentate this appearing as an angulate carina from directly externally. Middle and posterior tibiae with ob- above, the extreme ventral margin, invisible from lique carinae as in Aphodius, without fringe of above, with a small median angulation directed spicules apically but with two well-separated tri- in the opposite direction. Pronotum convex, mar- angular teeth, each tooth with a fine hairlike seta gined basally and laterally, surface with mixed basally on each side, the outer apical angles pro- coarse and very fine punctures, coarse punctures longed, spinelike as in Ataenius, long spur, first uniformly distributed, separated by less than one tarsal segment, and three following segments com- diameter to two diameters. Elytra convex, coarsely bined, equal in length. Terminal tarsal segment 12 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY about as long as two preceding segments combined, head bent down. Pronotum weakly convex, ap- claws minute. proximately three-fourths as long as wide, sides HOLOTYPE.—California Academy of Sciences, strongly arcuate from the widely rounded anterior No. 2549. angle to base with the posterior angles feebly TYPE-LOCALITY.—Black Mountains, North Caro- emarginate, base slightly sinuate, edge fimbriate- lina. crenate, the setae quite long and conspicuous, SPECIMENS EXAMINED.—109. longest at anterior angles, separated by half their DATES COLLECTED.—April 29-September 10. length or less, crenations weak; surface smooth DISTRIBUTION (Figure 2).—Florida: Caverns State with extremely minute alutaceous sculpture and Park (Jackson County), Key West. Georgia: Pine close minute punctures throughout, laterally with Mtn. (Rabun County). Indiana: Crawford County. close, very moderate punctures which decrease in Maryland: Marlboro. Ohio: Cincinnati. North size toward disc and base, larger punctures sep- Carolina: Black Mts., Pisgah Forest. South Caro- arated generally by their own diameters more or lina: Eastatoe River (Pickens County), I'On less. Elytra convex, subparallel, about three-fourths Swamp (7 mi N of Awendaw, 15 mi NE of Charles- as wide as long, humeri finely dentate, elytral ton), Sassafras Mtn. Virginia: A. P. Hill Military striae fine, moderately deep, very fine strial punc- Reservation (Caroline County), Duthet State Park tures slightly crenating inner margin of the evenly (Bath County), Jefferson National Forest (Bote- convex intervals, lateral intervals not different, tourt County), 5 mi S of Paris. apparently impunctate. Mesosternum shagreened REMARKS.—In Aphotaenius the apical fringe of as usual, without carina between the coxae. Meta- setae of the hind tibiae found in Ataenius is re- sternum shining, with a long, strong midline placed by two triangular teeth, each bearing a very ending anteriorly in a deep pore, anterior disc fine seta on each side, and the middle and hind each side with a large patch of dense, setigerous, tibiae have distinct oblique carinae as in Aphodius moderate punctures, a few punctures trailing pos- (Figure 1/). In all other characters Aphotaenius teriorly, smooth toward sides which show notice- agrees with Ataenius. See original description of able alutaceous sculpture and a small scabrous the genus for details. area at extreme edge, metasternal triangle mod- Aphotaenius carolinus is a forest species, most erately deep, finely alutaceous within. First visible frequently found in droppings of deer; however, abdominal sternum with fine, posterior marginal it has been collected in cow dung and dog excre- line. Remaining sterna finely fluted along anterior ment in deep woods. Adults are frequently found margin, surface finely alutaceous, with scattered, under old deer dung of the previous year. Jerath very fine punctures from side to side and a cluster (1960:68) described the larva. of very moderate punctures at extreme sides. Fourth abdominal sternum at middle about two- thirds as long as preceding sternum. Pygidium 2. Pseudataenius waltherhorni (Balthasar), with a shining convex apical lip much longer at new combination middle, about one-fourth the length of the eroded Ataenius waltherhorni Balthasar, 1938:55.—Cartwright, 1968: disc of the pygidium. Anterior femora with peri- 27. marginal line, disc smooth and shining, a few vague, scattered, very moderate punctures; fore DESCRIPTION.—Length 3.7 to 5:0 mm; width 1.5 tibiae normal with three sharp, triangular teeth, to 2.0 mm. tarsus long, the first tarsal segment longer than Males: Elongate-oblong, shining, dark casta- second, terminal segment as long as preceding two neous. Head wide, weakly convex, finely reflexed segments combined. Middle and hind femora clypeal margin broadly rounded each side of wide, smooth and shining, with scattered, very minute shallow, median emargination, sides weakly arcuate punctures, without trace of posterior marginal to angle of genae, prominent genae sharply round- line. Apical fringe of posterior tibia of five setae, ed, right-angled, with three or four stiff, moderate a very short triangular accessory spine, and an in- setae at angle; surface punctures of head very fine, tervening seta between spine and spurs, the middle close throughout but a trifle less so at middle of two setae much shorter than those on each side. disc; eyes large and not completely hidden with NUMBER 154 13

FIGURE 2.—Distribution of Pseudataenius socialis (Horn), Ataenius duncani, new species, Aphotaenius carolinus (Van Dyke), and Ataenius edistoi, new species. o socialis -k duncani • carolinus O edistoi

Tarsi of middle and hind legs long and slender, DATES COLLECTED.—May to August. posterior tarsus about three-tenths longer than DISTRIBUTION (Figure 3).—Florida: Everglade, tibia, metatarsus equal to long spur and to follow- May 1912, Wm. T. Davis Coll. (Purdue Univer- ing three segments combined, terminal segment as sity); Key West, July-August 1960, R. E. Wood- long as preceding two segments combined. ruff Coll. Louisiana: "N. Amerik" (USNM). Penn- Females: Compared to males, usually darker in sylvania: Swarthmore, Delaware County, 6 June color with head and pronotum more convex, the 1940, Mark Robinson (USNM). clypeus is more deeply emarginate, the genae are REMARKS.—This species is somewhat interme- more rounded and less prominent, the clypeus is diate between Ataenius and Pseudataenius but I distinctly transversely wrinkled anteriorly and believe it should be placed in the latter genus be- there is an occipital band of close, moderate punc- cause it resembles, and agrees in so many charac- tures. Females lack the patch of moderate setiger- ters with, the two other species, P. socialis (Horn) ous punctures on the metasternum, the 4 th ab- and P. contortus, new species. The sexual dimorph- dominal sternum is longer, and the pygidium is ism, the very weakly convex head and pronotum much shorter. of the male, the strongly arcuate, conspicuously HOLOTYPE.—In Deutsches Entomologisches In- fimbriate sides of the male pronotum, the long stitut. slender tarsi, and large eyes are all more or less TYPE-LOCALITY.—Havana, Cuba. foreign to the genus Ataenius. SPECIMENS EXAMINED.—Four from United States. Males of P. wait herhorni differ from those of (55 from Cuba.) P. socialis and P. contortus in having fore tibiae 14 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 3. Distribution of Pseudataenius waltherhorni (Balthasar), P. contortus, new species, Ataenius parkeri, new species, A. brevicollis (Wollaston), and A. integer Harold. (Letter "s" following symbol represents state label only.) •k waltherhorni • contortus o parkeri D brevicollis A integer with the normal three large teeth and normal an- convex, wider through the prominent genae than terior spur, the genae not as strongly protruding through anterior angles of the pronotum; finely laterally, the head a little longer, pronotal punc- reflexed clypeal margin broadly rounded each side tures coarser laterally, tarsi not quite as long, and of shallow median emargination, sides nearly a conspicuous metasternal patch of moderate, straight to sharply rounded, less than right-angled setigerous punctures. Females have fine, transverse, genae, the genae with a tuft of six to eight, close, anterior wrinkles, a condition intermediate be- moderately long, stiff setae; head surface uniformly, tween P. socialis and P. contortus, and the pronotal very finely punctate, the punctures separated by punctures are finer with less disparity in size be- about twice their diameters. Pronotum two-thirds tween the fine and moderate punctures than in the as long as wide, sides and base finely margined, other species. fimbriate with long, conspicuous setae, the setae longest at anterior angles where they are separated 3. Pseudataenius socialis (Horn) by about one-third their length and gradually shorter to beyond posterior angles; sides widely Ataenius socialis Horn, 1871:287; 1887:76—Harold, 1874b:174. Pseudataenius socialis.—Brown, 1927:290. arcuate into slightly sinuate base, sometimes with barely a trace of emargination at posterior angles; DESCRIPTION.—Length 4.2 to 5.0 mm; width 1.8 surface very moderately convex, with close, mixed, to 2.0 mm. Elongate-oblong, castaneous, shining. quite evenly spaced, very fine to very moderate Males: Head short, broad, flat, only very weakly punctures throughout, a little finer anteriorly at NUMBER 154 15 middle, the larger punctures separated in general little larger and the apical lip of the pygidium is by one to two or more times their diameters. Elytra not as long at middle. The anterior femora have convex, long, subparallel, not quite three-fourths an anterior marginal line. The anterior tibia has as wide as long, humeri not dentate, elytral striae the normal three large teeth and short straight spur. fine and not very deep, strial punctures weakly LECTOTYPE (present designation).—In Academy crenating sides of the feebly convex intervals, of Natural Sciences of Philadelphia, presently la- tenth interval flat, intervals with scattered, minute beled "Type No. 3609." punctures more or less in two rows, separated by TYPE-LOCALITY.—"Georgia and Louisiana." The about four times their diameters. Mesosternum lectotype is labeled simply "La." shagreened as usual in Ataenius, without noticeable SPECIMENS EXAMINED.—34. carina between the coxae. Metasternum with seven DATES COLLECTED.—May 31 to July 15. or eight moderate punctures plus scattered, minute DISTRIBUTION (Figure 2).—Kansas: Lawrence, puncture on each side of long, fine, rather shallow Maple Hill, Ottawa, Topeka. Louisiana: Harahan, midline, minutely alutaceous with a few close, fine Morgan City, Raceland. Nebraska: Lancaster punctures at sides, metasternal triangle shallow, County, Lincoln. Oklahoma: Noble County (in very minutely alutaceous within. First visible ab- Cynomys hole). Texas: Columbus, Houston. dominal sternum with fine posterior marginal line, REMARKS.—As indicated in the above descrip- second with a trace of a similar line at sides, middle tions, the sexes are dimorphic in Pseudataenius. three sterna with very fine fluting along anterior Differences from the genus Ataenius have been margin, sometimes invisible in some specimens, pointed out by Harold (1874b) and Horn (1887). fluting of 5th sternum only about twice as long, Horn (1887:77) gives the following translation surface of sterna minutely alutaceous with a few of Harold's comments: usually vague, scattered, fine punctures. Pygidium The posterior tibiae are without transverse ridges, a char- with wide, smooth apical lip, eroded area deep acter which forbids its association with Aphodius, and allies and rough. Anterior femora without marginal line, it with Ataenius, Saprosites and Euparia. On the middle tibia surface smooth with a few vague shallow fine punc- there is, however, a transverse ridge, in which it resembles tures. Anterior tibiae narrow with only two large Saprosites. Saprosites is characterized by the relatively short teeth, margin smooth above teeth, spur long, par- tarsi and the denticulate middle tibiae, characters to which the graceful and slender tibiae and tarsi of A. socialis are allel, the tip bent inward. Middle and hind femora foreign. If, therefore, one does not desire to create a new like anterior femora but with row of four, quite genus for every aberrant form our choice of position must widely spaced, coarse setigerous punctures over be between Ataenius and Euparia. The short and transverse outer half. Posterior tibial apical fringe of eight head with the prominent genae suggest Euparia; the posterior close setae, a short accessory spine, and an inter- tibiae straight and slender, the genae continuous with the clypeus, not separated by an incisure, give weight to an vening setae between spine and spurs, the latter association with Ataenius, from which it however differs by seta not easily seen. Tarsus of middle and hind the non carinate mesosternum and remarkable characters legs very long and slender, approximately one- which bespeak for it an isolated position in the genus. . . . third longer than the tibia; metatarsus longer than The eyes are larger than usual in the genus and not con- long spur, approximately equal to following three cealed from the front when the head is deflexed. The maxil- lary palpi are also longer and the terminal joint slender, not segments combined. thicker at the middle as usual in the other species. It will be Females: Compared with the male the head and observed that the terminal joint is fully twice as long as the pronotum are more convex and much more strong- penultimate in the $, the penultimate in the $ is two-thirds the length of the terminal. ly punctate. Anterior two-thirds of the clypeus transversely wrinkled, posterior clypeus and front Brown (1927) decided that so many differences finely, closely punctate, the punctures separated by from Ataenius were sufficient to require a new their diameters or a little more. Pronotum with genus for Horn's socialis and proposed the name mixed very fine and moderately coarse punctures Pseudataenius. throughout, the coarse punctures irregularly spaced Ataenius socialis was described in 1871 from two and a little finer anteriorly at middle, separated specimens with the distribution listed as Georgia generally by less than one to two or three times and Louisiana. The Horn collection now in the their diameter. The 4th abdominal sternum is a Academy of Natural Sciences of Philadelphia no 16 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY longer includes a specimen from Georgia. The ceous. Mesosternum shagreened with dense fine Louisiana specimen agrees perfectly with the origi- punctures and very fine, short, decumbent hair, nal description and has been designated as the not distinctly carinate between the coxae. Shining lectotype. Horn (1887) stated that the two original metasternum with long midline weakly impressed specimens were females and added the description at ends and barely traceable at middle, with a very of the male. The male description is that of the irregular row of fine-to-moderate close punctures species occurring in Louisiana, Texas, Kansas, Ne- each side, smooth and shining outward to sides, braska, and Oklahoma and the lectotype female a trace of fine, rough sculpture at extreme sides, agrees with the female of that species. The Georgia the metasternal triangle weakly depressed and specimen was very likely the species described be- minutely alutaceous within. First visible abdominal low as Pseudataenius contortus, new species. sternum with posterior marginal line, next two sterna with similar line except at middle, sterna flattened at middle, very fine fluting along anterior 4. Pseudataenius contortus, new species margin, their surface minutely alutaceous with a few very fine to fine, scattered, shallow punctures PLATE la more noticeable at sides. Fourth abdominal ster- DESCRIPTION.—Holotype Male: Length 5.1 mm; num about two-thirds as long as preceding sternum, width 2.1 mm. Elongate-oblong, shining, dark 5th not quite as long. Apical lip of pygidium at castaneous, antennae testaceous. Head short, broad, middle about half as long as 5th sternum, convex, very weakly convex; finely reflexed clypeal margin shining but minutely, densely punctate, eroded area broadly rounded each side of shallow median finely roughened and about four times as long as emargination, sides arcuate to sharply rounded the apical lip at middle. Anterior femora without right-angled genae, genae fimbriate with a close marginal lines, surface shining, convex, with a few group of seven or eight moderately long, stiff setae; scattered, shallow, very moderate punctures. An- surface of head very minutely alutaceous with terior tibiae without lateral teeth, the terminal rather evenly spaced, minute to very fine punctures, tooth elongate, subparallel-sided, and bluntly generally separated by two or three diameters over rounded; the spur long, gradually widened, and middle disc, a trifle finer anteriorly, and a little slightly twisted to anterior third then bent inward closer basally. The genae flaring outward give the and slightly downward to sharp tip, at widest point head a broad distinctive appearance. Pronotum it is at least twice as wide as at base; first tarsal 2.0 mm wide, and 1.4 mm long, rather weakly con- segment larger than second, terminal segment as vex, sides strongly arcuate from the widely rounded long as three preceding segments combined. Middle anterior angles into the similarly arcuate base, and hind femora minutely alutaceous, a few scat- sides and base finely margined, fimbriate with long, tered, shallow, fine punctures and a row of four, conspicuous setae which are very slightly longer moderate, setigerous, widely spaced punctures over at anterior angles, then very gradually decreasing outer half of femur, without marginal lines. Apical in length around posterior margin to base, sep- fringe of posterior tibia of nine fairly long setae, arated at anterior angles by approximately one- an accessory spine half as long, and an intervening third their length; surface very minutely alutaceous seta between the spine and spur; tarsus very long throughout under high magnification, mixed very and slender, the tibia only two-thirds as long; fine and fine, quite evenly distributed punctures metatarsus one-fourth longer than long spur, as throughout except for a narrow, impunctate, longi- long as following three segments combined, termi- tudinal midline, punctures a trifle smaller anterior- nal segment as long as two preceding segments ly, and little larger basally and laterally. Elytra combined. 3.2 mm long and 2.1 mm wide, convex, subparallel, Allotype Female: Length 4.6 mm; width 1.9 mm. humeri not distinctly dentate, striae fine, not deep, Compared with the male, the clypeus is more very fine strial punctures weakly crenating inner deeply emarginate at middle, the sides are very margins of the moderately convex intervals, inter- slightly incurved or emarginate in outline, the vals with a medium row of very minute punctures, genae are curved back, not continuing straight to tenth interval flat and a little more strongly aluta- angle of the genae; the head is more coarsely and NUMBER 154 17 closely punctate, the pronotum is more convex, 4.0 to 5.1 mm and in width from 1.7 to 2.1 mm. much more coarsely punctate with close, mixed Frequently a male will show a suspicion of a sec- punctures showing much greater disparity in size ond tooth opposite the base of the spur on the but with same impunctate midline. The anterior anterior tibia. Sometimes the longitudinal, im- femora have a perimarginal groove which is weak punctate midline of the pronotum will be reduced, posteriorly. The anterior femora are normal with but usually at least a trace will remain. the usual three sharp, triangular teeth and a long, Males of this species are easily separated from straight, slender spur. The middle femora have those of P. socialis (Horn) by the shape of the a shallow but complete posterior marginal line. anterior spur and lack of a well-developed second The posterior femora have a slightly deeper pos- tooth of the anterior tibiae. Females of P. con- terior marginal line along the outer two-thirds. tortus usually are without—or with very feeble— The abdominal sterna are convex from side to transverse clypeal wrinkles and are comparatively side with the 4th sternum comparatively longer. less strongly punctate over the pronotum. The The pygidium is shorter, with a thin, shiny apical transverse clypeal wrinkles are conspicuous and marginal lip. the pronotal punctures show greater disparity in HOLOTYPE.—USNM 71732. P. socialis. TYPE-LOCALITY.—Florida, 17 miles north of Tallahassee, Tall Timbers Research Station, at 5. Ataenius edistoi, new species light, 25 June to 4 July, 1967, L. Collins. Holotype, allotype, and 27 paratypes with same data. DESCRIPTION.—Holotype Female: Length 3.9 mm; SPECIMENS EXAMINED.—372. width 1.7 mm. Elongate-oblong, parallel, shining, DATES COLLECTED.—June 1 to July 23. polished, black with anterior margin of clypeus, an- DISTRIBUTION (Figure 3).—Paratypes. Alabama terior margin of pronotum, and legs reddish. Head (1): Daphne, 12 June. fDelaware (1): Delaware convex. Finely reflexed margin of clypeus broadly Bay, "14 foot Bank, L.H.," 17 July 1936. Florida rounded each side of a wide, shallow, median (321): Monticello (199), black light, 12 June emargination, sides feebly arcuate to obtusely 1969, W. H. Whitcomb. Tallahassee (4), 29 June rounded, nearly right-angled genae; surface of clyp- 1965, W. Suter. Tall Timbers Research Station, eus transversely wrinkled over anterior half, Leon County (118), black light, 1-8 June 1967, upper half closely finely punctate gradually to a L. Collins. Georgia (20): Beachton, Birdsong Plan- narrow transverse band of very fine punctures just tation, 4-7 July 1967, E. V. Komarek. Louisiana in front of the coarser punctures of the frontal (11): Baton Rouge (2), June 1905, A. W. Merrill. and basal areas, the latter generally separated by New Orleans (1), 13 June, H. Soltau Coll. their diameters or a little less. Pronotum 1.5 mm (USNM). Patterson, St. Mary Parish (4), 11 June wide and 1.1 mm long, quadrate with sides nearly 1959, W. Suter. Pearl River (4), 6 June 1893, H. straight and parallel, convex, anterior angles quite Soltau Coll. (USNM). Mississippi (2): "Southern sharply rounded, posterior angles very broadly Mississippi" (1), 11 June 1893, H. Soltau Coll. rounded, from sides with base, sides and base finely Utica (1), trap light, 21 July 1964. New Jersey margined, not crenate, without marginal setae, (1): "New Jersey," no date, J. B. Smith. South surface with evenly distributed, close, mixed very Carolina (11): Blackville, Edisto Exp. Sta. (2), fine and moderate punctures, the moderate punc- trap light, 9 July 1938, O. L. Cartwright. Charles- tures a trifle smaller anteriorly and more numerous ton (1), 15 June 1930, O. L. Cartwright. Hender- in the anterior angles, generally separated more or sonville, Colleton County (2), 23 July 1936, M. less by about their diameters, very few close to pos- Robinson. Summerville (1), 9 July 1936, O. L. terior margin. Elytra 2.5 mm long and 1.7 mm wide, Cartwright. Swansea (1), F. Knab. Yemassee (4), nearly parallel-sided, humeri finely dentate, striae 3 June 1939, 6 June 1947, O. L. Cartwright. Vir- moderately crenate-punctate, intervals nearly flat, ginia (3): Arlington (1), 20 July 1949. Nelson with minute scattered punctures, lateral intervals County (2), 30 June 1911, 3 July 1916, W. Robin- not different. Mesosternum shagreened as usual, son. carinate between the coxae. Metasternum smooth, REMARKS.—The specimens vary in length from shining, with rather close, scattered, very minute 18 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY punctures, midline long, not deeply impressed, face litter on sandy but hard ground along the vaguely microreticulate outward to sides, metaster- roadsides. Apparently neither A. edistoi nor A. nal triangle similarly sculptured, not deeply im- saxatilis are attracted to lights, at least under cer- pressed. Abdominal sterna convex, smooth, shin- tain conditions, for I have run lights and light ing, with scattered, very fine punctures at middle, traps at the same time and place they were col- some very moderate punctures and a vaguely un- lected but failed to get either at the lights. even surface at extreme sides, first visible sternum with very fine posterior marginal line, the follow- ing sterna very finely fluted along anterior margin, 6. Ataenius saxatilis Cartwright middle three sterna subequal in length, 5th ster- Ataenius saxatilis Cartwright, 1944:29. num about three-fourths as long. Pygidium smooth, shining, with rather close, unevenly spaced, fine DESCRIPTION.—Length 3.5 to 4.6 mm; width 1.6 punctures mostly over basal half. Anterior femora to 2.1 mm. Oblong, convex, strongly shining, with perimarginal groove, surface shining, with piceous; sides of pronotum, margin of clypeus, scattered, very fine punctures. Middle and hind and legs dark castaneous, antennae pale testaceous. femora smooth, polished, with minute, scattered Head strongly convex, very finely reflexed margins punctures, without posterior marginal line. Pos- of clypeus broadly, evenly rounded each side of terior apical tibial fringe of seven setae, without rather shallow median emargination, sides weakly accessory spine. First posterior tarsal segment arcuate to genal suture, genae rounded, distinct; slightly longer than long spur and slightly longer clypeal surface concave close behind median emar- than following three segments combined. gination, feebly wrinkled and very finely punctate Allotype Male: Length 3.5 mm; width 1.6 mm. over anterior third, very minutely punctate at Dissected and broken. The only differences middle and base, front with rather wide band of noted between the holotype and allotype are that close, moderate punctures separated by one diam- the latter has a longer, narrow pygidium with eter or twice their diameters. Pronotum about one several close coarse punctures along the basal mar- and one-half times as wide as long, sides and base gin and a much shorter 5th abdominal sternum. finely margined, without marginal setae, anterior HOLOTYPE.—USNM 71733. angles obtuse, posterior angles broadly, evenly TYPE-LOCALITY.—South Carolina: Colleton rounded from sides into base, highly polished sur- County, 5 mi E of Canadys, State Highway 61, face with generally distributed, sparse, irregularly along Edisto River, 19-22 May 1968, O. L. Cart- spaced, moderately coarse punctures separated on wright. disc by one to four or five diameters, slightly SPECIMENS EXAMINED.—Seven. coarser and closer at sides, and with interspersed, DATES COLLECTED.—May 19 to June 7. similarly distributed, minute punctures through- DISTRIBUTION (Figure 2).—Allotype and four para- out. Elytra about one and two-thirds as long as types (three completely dissected) collected with wide, humeri not noticeably dentate, sides not the holotype. One paratype, South Carolina, Col- quite parallel, widest slightly beyond middle; leton County, 3 mi SW of Williams near junction striae fine, not deep, strial punctures finely crenat- of State Highways 64 and 645, 7 June 1945, O. L. ing the intervals on each side, the intervals almost Cartwright. flat, highly polished, microscopically punctate, lat- REMARKS.—Ataenius edistoi is another of a con- eral intervals not different. Mesosternum shagreen- siderable group of species closely similar to A. ed, with fine sculpture and very fine, short, figurator Harold. All have a black or dark brown, appressed hair; finely carinate between the coxae. highly polished surface and a convex noneroded Metasternum, abdomen, and legs shining, minutely pygidium, although a few show some punctures or punctate. Metastemal midline fine, shallow. The slightly roughened surface. Ataenius edistoi is usual anterior marginal fluting of abdominal sterna slightly broader than A. figurator and not quite so fine as to be invisible except under high mag- as broad as A. saxatilis. It is recognized by the nification. Pygidium convex, smooth, polished with punctate pygidium. a few scattered, very fine punctures. Anterior All of the specimens were collected under sur- femora with weak anterior groove, without pos- NUMBER 154 19 terior marginal groove. Middle and posterior to 1.7 mm. Polished, shining black, elongate- femora without posterior marginal groove. Apical parallel, convex, legs and ventral side reddish. fringe of posterior tibia with nine close, uniform Head moderately convex, clypeus broadly rounded setae, without accessory spine; long spur, first tarsal with only the barest trace or suspicion of an angula- segment, and following three segments combined tion or tooth each side of a broad, shallow, median all about equal in length. The male has the 4th emargination, sides nearly straight to rounded and 5th abdominal sterna shortened, 4th sternum genae, edge finely reflexed; surface finely, trans- about two-thirds as long as the preceding and the versely wrinkled anteriorly, a narrow, transverse, 5th two-thirds as long as the 4th. In the female relatively smooth, minutely punctate band above the 4th abdominal sternum not shortened, the greatest convexity and anterior to a basal band of pygidium less convex and not as long as in the close, moderate punctures, irregularly placed but male. generally separated by less than their diameters. HOLOTYPE.—USNM 56942. Pronotum convex, two-fifths wider than long, an- TYPE-LOCALITY.—Bogg's Rock, Liberty, South terior angles rather sharply rounded, posterior Carolina. angles very broadly rounded, sides and base finely SPECIMENS EXAMINED.—450. margined, edge entire without marginal setae; sur- DATES COLLECTED.—June 14 to September 1. face with scattered, moderately coarse punctures DISTRIBUTION (Figure 4).—Georgia: Flat Rock generally separated by their diameter or more, (Flat Rock Creek, 7i/2 mi E of Columbus), Stone some intermixed, scarcely visible, minute punc- Mtn. North Carolina: Buck's Forest (Transylvania tures, narrowly impunctate basally and in posterior County), High Falls (Little River, Transylvania angles. Elytra convex, without humeral denticles, County). South Carolina: Bald Rock (4 mi S of nearly parallel-sided, one-half longer than wide, Caesar's Head), Beverly, Forty Acre Rock (Lan- nearly two and one-half times as long as pronotum; caster County), Haile Gold Mine (Lancaster Coun- striae moderately fine, finely crenate-punctate, in- ty), Jefferson, Lancaster, Liberty (Bogg's Rock), tervals weakly convex, not different laterally, sur- Pinnacle Mtn., Table Rock Mtn. face with irregularly placed, moderately close, REMARKS.—Ataenius saxatilis is closely allied to extremely minute punctures. Underside smooth A. figurator Harold; however, it is a more robust and shining. Mesosternum weakly carinate between species and differs in general shape. Ataenius saxa- the coxae. Metasternum with fine, weakly im- tilis increases noticeably in width from head to pressed midline; disc with minute, scattered punc- slightly beyond the middle of the elytra, whereas tures, very slightly roughened at extreme sides and A. figurator is more slender and parallel. The in the shallow metasternal triangle. Hind coxal clypeus is more widely rounded and without even plates similarly roughened. Abdominal sterna a suspicion of angulation each side of the median smooth and shining, slightly roughened at extreme emargination in A. saxatilis. In A. figurator the sides, finely fluted along anterior margins. Pygidium clypeus on each side of the median emargination smooth, polished, very minutely punctate, smoothly is more sharply rounded, usually with an evident convex without trace of eroded surface. Anterior angulation, frequently with a noticeable denticle. femora with barely a trace of marginal line an- Ataenius saxatilis is found in the sand washed teriorly, none posteriorly. All femora smooth and down to the edges of pockets or islands of soil and shining but with extremely minute, scattered punc- vegetation on outcroppings of bare, weathered tures. None with posterior femoral lines. Posterior areas of granite or gneissic rock, or in the sand tibia without accessory spine, tibial fringe of six and soil around the lower edges of such areas of setae. First posterior tarsal segment slightly longer rock. Jerath (1960:73) described the larva. than long spur and noticeably longer than follow- ing three segments combined. In the females the 7. Ataenius figurator Harold terminal abdominal sternum is nearly as long as Ataenius figurator Harold, 1874a:24.—Horn, 1875:142; 1887: the penultimate sternum but in the male the termi- 79 Schmidt, 1922:435 Cartwright, 1964:103. nal sternum is much shorter, only about half as long as the preceding sternum. DESCRIPTION.—Length, 3.3 to 4.3 mm; width 1.3 20 SMITHSONIAN CONTRIBUTIONS TO ZOOLOCY

FIGURE 4.—Distribution of Ataenius rugopygus, new species, A. saxatilis Cartwright, A. sabinoi, new species, and A. insculptus Horn. * rugopygus • saxatilis D sabinoi o insculptus

LECTOTYPE.—In Museum National d'Histoire den, Harahan, Morgan City, New Orleans, Pat- Naturelle. terson, St. Mary Parish, Sam Houston State Park, TYPE-LOCALITY.—Louisiana. Slidell. Maryland: Beltsville, Breton Bay, College SPECIMENS EXAMINED.—459. Park, Glen Burnie, Hebbville, Scotland, Silver DATES COLLECTED.—May 15 to October 29. Spring, Upper Marlboro. Mississippi: Grenada, DISTRIBUTION (Figure 5).—Alabama: Auburn, Hinds County, Jackson, Leflore County, Ludlow, Dadeville, Florence, Helena, Killen. Arkansas: Utica. Missouri: Sikeston. New Jersey: Cape May. Drew County, Hope Experiment Station (Hemp- New Mexico: Bernalillo, Chaves County. North stead County), West Memphis, Taylor (Lafayette Carolina: Camp Lejeune, New River (Marine County), Tuckerman (Jackson County). District Corps Air Facility), Raleigh, Swan Quarter. Okla- of Columbia: Washington. Florida: Blountstown, homa: Broken Bow, Enid, Erick, Lake Texhoma Tall Timbers Research Station (Leon County). (near Willis), Noble County, Oklahoma City, Georgia: Arlington, Atlanta, Beachton, Cornelia, Payne County, Ponca City, Union City, Watts. Demorest, Tifton. Indiana: Grantsburg, Hovey Pennsylvania: Philadelphia. South Carolina: An- Lake. Kansas: Edwards County, Gray County, Ham- derson, Blackville, Camden, Charleston, Chester, ilton County, Meade County, Medora, Mt. Hope, Clemson, Columbia, Florence, Gramling, Green- Mulvene, Reno County, Sedgewick County, Wal- ville, Lancaster, Litchfield Beach, Little River lace County, Wichita County, Wyandotte County. (Salem), Myrtle Beach, Palmetto, Ritter, Seneca, Kentucky: Louisville, St. Mathews. Louisiana: Summerville, Tigerville, Yemassee, York. Tennes- Alexandria, Algiers, Baton Rouge, Calcasieu, Guey- see: Backbone Rock, Burrville, Harrison Bay State NUMBER 154 21

FIGURE 5 Distribution of Ataenius semipilosus Van Dyke, A. ftgurator Harold, A. vandykei, new species, and A. convexus Robinson, o semipilosus • figurator it vandykei • convexus

Park (Hamilton County), Memphis, Pulaski. width 1.5 mm. Very elongate, parallel, piceous, an- Texas: Alice, Anahuac, Beeville, Brownsville, Col- terior margin of pronotum, anterior margin of head, lege Station (Brazos County), Columbus, Corpus and legs reddish, strongly shining, polished. Head Christi, Cotilla, Edna, Elkhart (10 mi SW), Har- convex, a low, sharp, widely based tooth each side of lingen, Hidalgo County, Houston, Kingsville, Lo- the wide, shallow, median emargination, finely re- lita, Moore, Orange, San Diego, Sherman, Sinton, flexed sides weakly arcuate to slightly depressed, Victoria, Weslaco, Wharton. Virginia: Arlington, rounded genae; clypeal surface narrowly, slightly Chatham, Hampton, Lorton, Norfolk, Petersburg, concave, smooth around anterior margin, disc Richmond. transversely wrinkled, frontal area with a some- REMARKS.—Ataenius figurator is one of a complex what irregular transverse band of very moderate of very similar, closely related species occurring punctures separated by their diameters or less, from the United States south to Argentina. These occiput smoother with fewer punctures. Pronotum species are difficult to define and to separate in convex, length 1.2 mm, width 1.4 mm, finely mar- many cases. Several new species are described in gined, edge entire without setae or crenations, the following pages and there may still be others anterior angles narrowly but obtusely rounded, included in the distribution given for A. figurator. hind angles obliterated, the arcuate sides smoothly rounded into base; surface with mixed, very mod- erate punctures and intermixed, extremely minute 8. Ataenius parkeri, new species punctures, the moderate punctures are irregularly DESCRIPTION.—Hololype Male: Length 4.3 mm; scattered over much of the surface but more nu- 22 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY merous about halfway toward the sides, very few SPECIMENS EXAMINED.—362. on middle disc and near the margins, noticeably DATES COLLECTED.—May 25 to September 30. absent posteriorly around sides and posterior DISTRIBUTION (Figure 3).—Paratypes. Arizona angles. Elytra long, parallel, length 2.6 mm, width (346): "Arizona" (1), no date, C. Shaeffer Coll. 1.5 mm, humeri very finely dentate, striae fine, (USNM). Bear Valley Ranch, Santa Cruz Mts. (3), moderately deep, strial punctures as wide as striae, black light, 2 August 1910, S. L. Wood, J. B. Karren, slightly crenating sides of intervals on each side, H. B. Shurtleff. Chiricahua Mountains (7): 2 Au- separated by about three times their diameters; gust 1952, 7 August 1957, D. J. and J. N. Knull intervals almost flat, only slightly more convex (3, OSU); 2 August 1961, L. J. Bottimer (3); 28 over apical declivity, lateral intervals not different, July to 7 August 1966, Karl H. Stephan (1). Co- surface shining, polished but with scattered, very chise County (5): Near Portal (1), 28 July to 7 inconspicuous, extremely minute punctures under August 1966, K. Stephan; San Bernardino Ranch high magnification. Mesosternum shagreened with (4), no date, 3750 ft, E. G. Smit (3, U. Kans.), fine, alutaceous sculpture and fine, short, ap- 3600 ft, no date, W. Nutting (1, Werner Coll.). pressed hair, a very fine, sharp carina between the Coyote Mountains (1): 4-7 August 1916 (M. Rob- coxae. Metasternum smooth, shining, midline fine, inson Coll.). Douglas (121): July-September 1963, scarcely impressed. Abdominal sterna smooth, pol- 10-16 July 1968, 7, 15 July 1969, 10, 25 August ished, anterior margin finely fluted, first two sterna 1969, J. H. Russell (103); 23 August 1952, B. with a few minute to fine punctures near sides, Malkin and Vet (10); August, F. H. Snow (2); 4th sternum about half as long as preceding ster- 30 September 1957, B. Benesh (2); 13, 20 Sep- num, 5th about three-fourths as long as 4th. Py- tember 1957, W. Rosenberg (4). Dragoon Moun- gidium convex, shining, polished. Anterior femora tains, Cochise Stronghold (2): 11 August 1954, without marginal grooves, the anterior edge with F. G. Werner (1); 25-27 July 1955, G. D. Butler two long setae near trochanter, separated by about and F. G. Werner (1). Huachuca Mountains (3): their length, set in a noticeable pore, outer half Sunnyside Canyon, 8 August 1970, 1 September of margin flared in a thin, arcuate, almost trans- 1970, K. Stephan (2); no other data (1). Madera parent plate, surface smooth and shining. Middle Canyon, Santa Rita Mtn. (1), 31 July 1954, F. G. and hind femora smooth, shining, without pos- Werner. Nogales (39): 23 July 1940, 8 August terior femoral lines. First hind tarsal segment 1950, 7 August 1952, J. J. and J. N. Knull (3); slightly longer than following three tarsal seg- 7 July 1949, 4 August 1953, 30 July 1957, D. J. ments combined, subequal to long spur. Posterior and J. N. Knull (35, OSU); 17 August 1947, F. tibial, apical fringe of seven setae, slightly unequal H. Parker (1, Howden Coll.). Oracle (1), 4500 in length. ft, 25 July 1917, Wheeler (MCZ). Patagonia (33): AIIotype Female: Length 4.4 mm; width 1.5 mm. 5 July 1936, M. Cazier (1); 10 July 1936, A. T. The greatest difference is in the terminal sterna of McClay Coll. (15); 21 August 1940, F. W. Nunen- the abdomen, the 4th sternum being nearly as macher (3); 11 August 1954, 21 July 1955, 8 Au- long as the preceding sternum, the 5th sternum gust, R. Schmitt (8, Werner Coll.); 2 August 1954 about three-fourths as long as the 4th and the (1); 3 August 1958, R. H. Arnett, Jr. (1); no date, pygidium relatively much shorter than in the male. E. S. Ross (2, Saylor Coll.); 2 August 1953, J. J. The allotype has a relatively longer first segment and J. N. Knull (1, OSU). Near Patagonia, Santa of the posterior tarsi. Cruz County (1), no date, R. H. Arnett, Jr. Pata- Paratypes vary from 3.5 to 4.4 mm in length gonia Mountains, west slope (2): 4400 ft, 27 July and 1.2 to 1.6 mm in width. Many specimens are 1949, F. W. Werner and W. Nutting (1); 2 August dark red brown but otherwise there seems to be 1953, D. J. and J. N. Knull (1, OSU). Pena Blanca little variation except in the number of pronotal (9): black light, 5 August 1964, J. Stibick (7); punctures, some specimens having relatively very 21 July 1969, R. H. Arnett (1); no date (Santa few. Cruz County), R. H. Arnett, Jr. (1). Pena Blanca HOLOTYPE— USNM 71734 (also allotype). Canyon (13), Pajarito Mountains, black light, 28 TYPE-LOCALITY.—Douglas, Arizona, at black July 1970, K. Stephan. Pima County (51): Colossal light, 10-16 July 1968, J. H. Russell. Cave Park (11), 4-11 August 1970, K. Stephan; NUMBER 154 23 Robles Ranch (40), 12 August 1947, Gillogly. moderately punctate, punctures separated by their Portal (12): 16 June 1956, Ellen Ordway (9); diameter or less. Pronotum 1.5 mm wide by 1.0 flood debris, 2 August 1961, L. J. Bottimer (3). mm long, anterior angles obtuse, posterior angles Ruby (1), 7 August 1952, D. J. and J. N. Knull broadly rounded, sides straight, sides and base Knull (OSU). Safford (4), light trap, 23 June, 1 finely margined, not fimbriate or crenate; surface July 1954, F. G. Werner (Werner Coll.). San throughout with close, quite evenly distributed, Carlos (1), 27 August 1935, Parker (M. Robinson mixed moderate and minute punctures, the moder- Coll.). San Pedro River, Fairbanks (1), 6 Septem- ate punctures separated by less than one to one or ber 1927, J. A. Kusche. Santa Catalina Mountains two times their diameters. Elytra 2.6 mm by 1.7 mm (6): Bear Canyon, 30 July 1970, K. Stephan (1); wide, humeri not dentate, elytral striae fine, mod- Sabino Canyon, July 1949, D. J. and J. N. Knull erately deep, strial punctures fine, weakly crenating (1, OSU); Sabino Canyon, August 1955, F. G. both sides of the weakly convex intervals, lateral Werner and G. D. Butler (3); foothills, 19 August intervals not different, surface extremely minutely 1970, K. Stephan (1). Sycamore Canyon (2), Santa punctate. Mesosternum shagreened with fine alu- Cruz County: 2 August 1958, R. H. Arnett, Jr. taceous sculpture and short, very fine, appressed (1); near Ruby, 10 August 1955, F. G. Werner and hair, carinate between the coxae. Metasternum G. D. Butler (1). Tucson (23): 21 July, 2 August shining, midline weakly impressed, disc with close, 1970, K. Stephan (2); at light, 9 August 1928, R. minute punctures, slightly roughened at sides; B. Streets (1, Mank Coll., Cornell Univ.); 20 July, metasternal triangle quite shallow, very finely Hubbard and Schwarz (5); no date, Wickham (6); roughened. First visible abdominal sternum with no date, H. Soltau Coll. (2, USNM); no date, barely a trace of posterior marginal line, remain- Psota Coll. (6, Field Museum); no date, Cartwright ing four sterna with fine, inconspicuous fluting Coll. (1, USNM). Tucson Mountains (1): 1 Au- along anterior margins, surface smooth, polished gust 1950, D. J. and J. N. Knull (OSU). Wilcox with barely a trace of a few scattered, very shallow, (1): 24 July. Wilcox Playa, Cochise County (1), inconspicuous punctures near sides. Fourth ster- 29 August 1970, K. Stephan. New Mexico (13): num shortened at middle, about four-fifths as long Rodeo (13 mi N), 16 June 1956, H. and A. How- as preceding sternum, the 5th sternum about half den (Howden Coll.). Texas (1): San Diego, 25 as long. Pygidium very convex, shining, but the May, Hubbard and Schwarz. Mexico: Sonora (1): surface very rough and uneven, not punctate. An- Hermosillo, 19-20 September 1952, B. Malkin. terior femora with indistinct anterior groove, pos- REMARKS.—In lateral view the pronotum is terior groove absent, surface smooth, shining, evenly rounded into the base (Figure 1&), while polished. Anterior tibia wide, short, upper surface A. duncani is more angulate, posteriorly (Figure shining, polished, spur long, opposite middle of \c). second lateral tooth, tarsi unusually long, the first This species is named in honor of Mr. Frank segment extending to tip of the spur and as long H. Parker of Globe, Arizona, a well-known col- as following three segments combined. Middle lector of Arizona Coleoptera with whom I have femora smooth, polished, with some minute, scat- exchanged specimens since 1932. tered punctures, three coarse setigerous punctures at knee, without posterior marginal line. Posterior femora same as middle but lacking the coarse 9. Ataenius rugopygus, new species punctures at knee. Apex of posterior tibia with DESCRIPTION.—Holotype Male: Length 4.0 mm; fringe of six, not-closely-spaced setae, without ac- width 1.7 mm. Elongate, parallel, shining, dark cessory spine. First posterior tarsal segment a little reddish brown, only moderately convex. Head mod- longer than long spur and equal to length of the erately convex, clypeal edge finely reflexed, sharply following three segments combined. triangularly dentate each side of wide, shallow, Allolype Female: Length 4.2 mm; width 1.7 mm. median emargination, sides weakly arcuate to ob- The 4th abdominal sternum equally as long as tusely rounded, right-angled genae; surface finely the 2nd and 3rd sterna, and the pygidium is rela- but roughly, transversely wrinkled, the wrinkles tively not quite as long as in the male. No other broken into short segments, frontal area closely, differences were noted. 24 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY HOLOTYPE.—USNM 71735. 23 July 1960, H. F. Howden. TYPE-LOCALITY.—Texas, Davis Mts., 27 May REMARKS.—Paratypes vary from 3.8 to 5.0 mm 1935, J. N. Knull (Cartwright Coll.). in length and 1.6 to 1.9 mm in width. Some speci- SPECIMENS EXAMINED.—106. mens show pygidial punctures as well as an uneven DATES COLLECTED.—April 30 to August 14. surface, and some are distinctly punctate with very DISTRIBUTION (Figure 4).—Paratypes. Arizona little other sculpture. Ataenius rugopygus is placed (12): "Arizona" (2), H. Soltau Coll. (USNM). in the figurator group of species, most of which Chinle (3), 26 July 1935, Bruer Coll. (MCZ). En- have a convex, shining, polished pygidium. trance, Chiricahua National Monument (2), Chiri- cahua Mts., horse dung, 2 July 1956, H. and A. Howden. Nogales (1), 17 August 1947, F. H. 10. Ataenius duncani, new species

Parker (Howden Coll.). St. John, Apache County FIGURE \C (3), at light, 29 May 1959, R. S. Beal (Beal Coll.). Winslow (1), 31 July, Barber and Schwarz. DESCRIPTION.—Holotype Male: Length 4.1 mm; Arkansas (2): Hope, 30 April 1925, 7 May 1926, width 1.5 mm. Elongate, parallel, moderately con- Gehring Coll. (MCZ). Colorado (1): Colorado vex, polished, piceous, legs reddish. Head convex, Springs, 15-30 June 1896, 6000-7000 ft (Casey margin strongly, sharply, triangularly dentate each Coll., USNM). Iowa (5): "Iowa," Casey Coll. side of shallow, arcuate emargination, sides straight (USNM). New Mexico (24): "New Mexico" (2, to sharply rounded right-angled genae, edge finely includes allotype), T. Pergande (USNM). Albu- reflexed; clypeus finely, transversely rugulose ex- querque (3): July 1888, Wickham Coll. (1, cept for a band of fine, close punctures just in USNM); no date, M. Robinson Coll. (1, USNM). front of the frontal basal band of close, moderate City of Rocks State Park (1), 17 July 1959, K. punctures, generally separated by their diameters V. Krombein. Deming (3), 22 July, Hubbard and or less. Pronotum convex, 1.1 mm long, 1.5 mm Schwarz. Glenwood, Catron County (1), 22 June wide, sides arcuate, sides and base finely margined, 1941, A. T. McClay. Jemez Mountains (3), 21 without marginal setae, anterior angles narrowly July, 8 August, Jos. Woodgate (J. W. Green Coll.). rounded, posterior angles very broadly, smoothly Las Vegas (7), 13, 14 August 1907, Barber and rounded, surface with scattered but rather evenly Schwarz. Magdalena (2), no date, Strickler (KSC). distributed, deep, moderate punctures, usually sep- Socorro (2), 22 July 1933, W. Benedict (Snow arated by one to three or four times their diam- Museum). Texas (61): "Texas" (3), no date, eters. Scutellum normal. Elytra 2.5 mm long and Casey Coll. (USNM). Big Bend National Park 1.5 mm wide, humeri finely, not conspicuously (14): Persimmon Gap (1), 2900 ft, 20 May 1959, dentate, striae moderately deep, finely crenate- Howden and Becker; Boquillas (7), 1850 ft, light, punctate, the punctures separated by four or five 13, 17, 23 May 1959, Howden and Becker; Nine times their diameters, the punctures as wide as the Point Draw (5), 2600 ft, light, 20 May, Howden striae; intervals flat, the 10th interval slightly con- and Becker. Brownsville (1), light, 9 May 1904, vex, surface smooth, impunctate. Mesosternum H. S. Barber. Chisos Mountains (1): 23 July, J. finely carinate between the coxae. Metasternum W. Green (J. W. Green Coll.). Davis Mountains smooth, shining, midline fine, long, not deeply (16): 27 May 1935, J. N. Knull (5, USNM); 8 impressed, a trace of alutaceous sculpture at ex- June 1939, D. J. and J. N. Knull (1, USNM); 24 treme sides, metasternal triangle each side not June 1956, 14 July 1957, 19 June 1958, D. J. and deeply impressed or sharply delineated. Abdominal J. N. Knull (4, OSU); Jeff Davis State Park (6), sterna smooth, shining, very finely fluted along 19 July 1968, W. H. Tyson. Del Rio (1): 25-26 anterior margins, fluting slightly deeper and longer April 1959, Becker and Howden. El Paso (3): no over lateral fourth; 4th sternum noticeably shorter date, Wickham Coll. (2, USNM); 19 July 1932, at middle, 5th sternum deeply, finely fluted in E. Ward Thompson (1, MCZ). Fort Davis (20): front and only half as long as preceding sternum carrion, 13 July 1956, H. and A. Howden (2); at middle; pygidium shining, polished, convex, 4 mi W, light, 15 July 1956, light, 30, 31 May twice as long as 4th abdominal sternum at middle. 1959, Howden and Becker (18). Laredo (2): 22- Anterior femur with fine marginal groove only NUMBER 154 25 along anterior margin, surface smooth, polished. ment (3), 11 August 1955, G. D. Butler and F. G. Middle and hind femora similarly smooth, pol- Werner (Werner Coll.); Robles Ranch (5), 12 ished, and without marginal lines. Posterior tibial July 1947, McClay. Portal (8): 2, 5 August 1965, fringe of seven setae, without accessory spine, first B. K. Dozier (7, B. K. Dozier Coll.); 28 July to posterior tarsal segment one-fourth longer than 6 August 1966, Karl H. Stephan (1, Stephan Coll.). the long spur and about one-fourth longer than Safford (1), light trap, 23 June 1954, F. G. Werner the following three segments combined. (Werner Coll.). San Simon (1), 19 September Allotype Female: Length 4.6 mm; width 1.8 mm. 1957, B. Benesh. Santa Cruz Village, Cobabi Mtn. About the only noticeable difference from the male (1), 10-12 August 1916. Southwest Research Sta- is in the pygidium and 5th abdominal sternum, tion, near Portal, Cochise County (8): 7, 11 July which are about equal in length and only slightly 1961, B. Benesh (2); 5400 ft, 8 July 1956, O. L. shorter than the 4th sternum. Cartwright (1); 31 July 1966, J. W. Tilden (5). HOLOTYPE.—USNM 71736. Sunnyside Canyon, Huachuca Mts. (2), 8 August, TYPE-LOCALITY.—Arizona, Tucson. Collected at 1 September 1970, K. Stephan. Tempe (2), 7 black light 11 August 1968 by K. Stephan. August 1922, E. W. Walter. Texas Pass, Dragon SPECIMENS EXAMINED.—309. Mtn. (1), 21 July 1917, "C V. Biol. Exp." (Cor- DATES COLLECTED.—May 23 to November 10. nell Univ.). Tucson (8): no other data (2, Field DISTRIBUTION (Figure 2).—Paratypes. Arizona Museum); 1 September 1947, R. S. Beal (2, W. F. (239): "Arizona" (12), no other data. "Ariz." Barr); 20 July, Hubbard and Schwarz (1, USNM); (5): no date, J. W. Green (3), Knauss Coll. (2, 12 July 1935, A. A. Nichol (1); 10 November KSU). "So. Ariz." (1), no date, Duncan. Agua 1937, Flora Sands (1, Werner Coll.); 11 August Fria (2), 6 August 1917. Arlington (near), Gil- 1968, black light, K. Stephan (1). Wilcox (8, in- lespie Dam, Maricopa County (3), black light, cludes allotype), 24 July, Hubbard and Schwarz. J. Stibeck. Avondale Ranch, Agua Fria River (10), Wilcox Playa, Cochise County (37), 24 July, 29 7 August 1917, Wheeler (MCZ). Chinle (2), 26 August, 12 September 1970, K. Stephan. California July 1935, Brues Coll. (MCZ). Chiricahua Moun- (19): "California" (1), no date, Casey Coll. tains (38): 9, 16 July 1929, 14 June 1936, 26 July, Blythe, Riverside County (10), 27 June, 12, 26 2 August 1952, 15, 29 July 1953, 24 July 1955, July 1946, W. F. Barr (W. F. Barr Coll.). Ripley, 27 August 1957, 9, 16, 30 July 1959, 7, 15 August Riverside County (8), 24 July, W. F. Barr and 1959, D. J. and J. N. Knull (36, OSU); Chiricahua P. D. Hurd. Colorado (1): Pueblo, 30 August 1949, National Monument (2), 17 August 1952, Leech G. H. Nelson (Nelson Coll.). Kansas (5): Ham- and Green (Iowa State College). Douglas (3), 24 ilton County (2), 3350 ft, F. H. Snow (Drury August 1952, B. Malkin. Florence (5): 3, 19 June, Coll.). Reno County (1), no date, J. C. Warren 26 July, C. R. Biederman (4); 28 July 1917, (Field Museum). Sedgwick County (1), no date, Wheeler (1, MCZ). Fort Apache (1), 6000 ft, 1 J. C. Warren (Field Museum). Wyandotte County August 1928, R. B. Streets (Werner Coll.). Fort (1), no date, J. C. Warren (Field Museum). New Grant (2), 23 July, Hubbard and Schwarz. Kirk- Mexico (13): Albuquerque (1), 11 July 1954, W. land (2), 4500 ft, Peoples Valley, Yavapai County, Downes (Iowa State College). Bernalillo (7), 16 22-24 August 1927 (Cornell Univ.). Nogales (3), July 1922, 15 July 1923, F. Psota (Field Museum). 4, 7 July 1949, 4 August 1954, D. J. and J. N. Deming (3), 22 July, Hubbard and Schwarz Knull (OSU). Palomas, Yuma County (1), 8 Au- (USNM). Las Vegas (1), 14 August 1901, Barber gust 1917, "C. V. Biol. Exp." (Cornell Univ.). and Schwarz. Rodeo (18 mi N), Peloncillo Mts. Patagonia (4): 6 August 1936, M. Cazier (1); 5 (1), 5 July 1956, H. and A. Howden. Texas (31): July 1954, 11 August 1951, light trap, R. Schmitt "Texas," no other data (1, MCZ). Alpine (5), (3, Werner Coll.). Phoenix (60): 3 August 1917, 1-15 June 1926, O. C. Poling (Cornell Univ.). no other data (3); no date, G. E. Ball (6); no Brewster County, Sunny Glen Ranch (1), 5000- other data (8, USNM; 1, Field Museum; 23 Rut- 7000 ft, May 1926, C. C. Poling (USNM). Dallas gers Univ.); 3 August 1917 (14, Cornell Univ.); (1), no other data. Davis Mountains (8), 14-24 no date, H. W. Wenzel (5, Field Museum). Pima June 1957, D. J. and J. N. Knull (OSU). Eagle County (8): Organ Pipe Cactus National Monu- Pass (8), 2 July 1947, B. Malkin. El Paso (1), no 26 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY date, Wickham Coll. (USNM). Hidalgo County ceous coating, sutural and alternate intervals more (1), 23 May 1951, D. J. and J. N. Knull (OSU). acutely elevated and cariniform along the middle, Limpia Canyon, Fort Davis, Jeff Davis County the carinae narrowly, shiny black and usually (1), at light, 28 July 1969, W. Suter. San Diego broken into close, elongate tubercles, the flatter (4), 25 May, Hubbard and Schwarz (USNM). intervals also show similar shiny tubercles much REMARKS.—This species is very close to A. more noticeable over posterior declivity, under parkeri but usually is black and darker than that high magnification elytral margin with very fine, species. It is also more heavily punctate on the very short setae spaced about twice their length; pronotum, and the side margin of the pronotum humeri moderately dentate. Mesosternum sha- shows a slight angle and is not so smoothly arcuate greened, covered with fine, short, recurved hair, as in A. parkeri (Figure 1). The paratypes vary in carinate between the coxae. Metasternal midline length from 3.4 to 4.9 mm. with deep pit or pore at each end, discal surface Ataenius duncani is named in honor of Douglas covered with shallow, coarse punctures separated K. Duncan of Globe, Arizona, a naturalist and usually by their diameter or less, widely scabricu- collector with whom I have corresponded for nearly late laterally, metasternal triangle shallow and forty years. often indistinct. Abdominal sterna with close, shallow, finely alutaceous punctures generally sep- arated by twice their diameter or less, the punc- 11. Ataenius alternatus (Melsheimer) tures usually masked by alutaceous sculpture Oxyomus alternatus Melsheimer, 1844:137. laterally; anterior segments fluted along margin, Ataenius alternatus.—Harold, in Gemminger and Harold, each succeeding segment with increasingly wider 1869:1066.—Horn, 1887:75 Schmidt, 1922:442. fluting, flutings of 5th sternum fully half as long DESCRIPTION.—Length 4.0 to 4.9 mm; width 1.8 as total length of sternum. Eroded area of pygidium to 2.0 mm. Oblong, moderately convex, surface finely scabriculate, apically with fine, shining mar- covered with a grayish brown, argillaceous coating. gin. Anterior femora with perimarginal groove, Head moderately convex; clypeus broadly emargi- surface completely covered by close, fine-to- nate, rounded each side, margin narrowly de- moderate punctures, frequently masked by coating. pressed anteriorly at middle, sides weakly arcuate, Middle femora finely, closely punctate basally, very finely reflexed; except for fine, rounded punc- outer half or less masked by coating, posterior tures in the anterior depression, head closely, femoral line shallow, complete. Posterior femora coarsely punctate, the punctures elongate especially elongate, subparallel-sided, otherwise similar to at sides where they may form lines, long axis of middle femora but with less coating, postfemoral those of clypeus longitudinal, those of pronotal line complete; first tarsal segment one-fourth area transverse in direction; genae rounded, dis- longer than long spur and one-fourth longer than tinct but not prominent. Pronotum about three- following three segments combined; tibial fringe fifths as long as wide, sides subparallel, not with seven to nine very short fimbriae; without completely visible from directly above, finely mar- accessory spine. gined laterally but without basal bead, margins HOLOTYPE.—In Museum of Comparative Zool- entire but with very short, widely spaced marginal ogy. setae under high magnification; surface closely, TYPE-LOCALITY.—"Pennsylvania." shallowly, coarsely punctate throughout, only SPECIMENS EXAMINED.—400+. slightly smaller along anterior margin, in vague, DATES COLLECTED.—March 6 to November 15. scarcely depressed midline over basal half and in DISTRIBUTION (Figure 6).—Alabama: Mobile. a similar vague lateral depression diagonally back- Florida: Alachua County, Arcadia, Archbold Bio- ward from lateral fovea, anterior angles very ob- logical Station, Bartow, Boynton, Capra, Childs tusely rounded, posterior angles broadly rounded, (Highland County), Crescent City, Dunedin, base sinuate. Elytra about two and one-half times Dunellon, Enterprise, Everglades National Park, as long as pronotum, striae deep, with punctures Fort Myers, Gainesville, Gold Head Beach, High- separated by twice their diameter but striae and lands Hammock State Park, Hillsboro, Indian punctures usually more or less masked by argilla- River, Jacksonville, Jupiter, Kissimmee, Korishan NUMBER 154 27

FIGURE 6.—Distribution of Ataenius hirsutus Horn, A. alternatus Melsheimer, and A. oklahomensis Brown. • hirsutus • alternatus O oklahomensis

State Park, LaBelle, Lake Alfred, Lake City, Lake- Blatchley Collection at Purdue University has a land, Lake Letta (near Sebring), Lake Lucy, Lake specimen labeled from Indiana. I have seen no Placid, Lake Wales, Mahogany Hammock, Marion other specimen from localities north of North County, Melbourne, Miami, Myakka River State Carolina. It is a common species in southeastern Park (Sarasoto County), Oneco, Orlando, Pensa- coastal states from North Carolina to Texas. cola, Punta Gorda, Sanford, Sarasota, Sebring, Silver Lake Recreational Area (Leon County), 12. Ataenius insculptus Horn Tampa, Volusia County, Winter Park, Zolfo Springs. Georgia: Augusta, Beachton, Brunswick, PLATE 2a Hazlehurst, Hinesville, Thomasville, Valdosta, Vi- dalia, Waycross. Louisiana: Harahan, Sam Hous- Ataenius scutptilis.—I.eConte, 1878:402 [not Harold. 1868: ton State Park. Mississippi: Gulfport, Gulf View, 86]. Ataenius insculptus Horn, 1887:70.—Schmidt, 1922:454.— Horn Island, near Ludlow (Leake County), Ocean Robinson, 1947:150. City. North Carolina: Swan Quarter. Pennsylvania (type-locality). South Carolina: Aiken, Aiken State DESCRIPTION.—Length 3.7 to 4.9 mm; width 1.7 Park, Allendale, Blackville, Charleston, Clemson, to 2.3 mm. Convex, oblong, moderately shining, Columbia, Florence, Hilton Head, Meredith, Sum- black, legs dark reddish brown. Head convex; merville, Walterboro. Texas: Atlanta. clypeus finely, triangularly dentate each side of REMARKS.—The type of A. alternatus (Melshei- broad, shallow emargination, sides arcuate, genae mer) was collected in Pennsylvania, and the sharply rounded, slightly more than right-angled, 28 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY margin finely reflexed; surface slightly concave at segments combined. The penultimate sternum anterior margin between teeth, elsewhere very con- shorter at middle and the pygidium longer than vex with very fine, close, evenly distributed punc- in the female. tures, generally separated by their diameters or LECTOTYPE (present designation).—In Academy slightly more; frontal area densely, quite coarsely of Natural Sciences of Philadelphia, Type Nos punctate, punctures practically contiguous. Pro- 3604. notum about one and one-half times as wide as TYPE-LOCALITY.—Tampa, Florida. long, slightly wider anteriorly, sides slightly arcu- SPECIMENS EXAMINED.—49. ate, anterior angles quite broadly rounded; pos- DATES COLLECTED.—April 7 to September 11. terior angles weakly emarginate, base weakly DISTRIBUTION (Figure 4).—Alabama: Mobile sinuate, posterior angles noticeably crenate but County (swamp forest, W side Mobile Bay). without noticeable fringe setae; surface closely Florida: Dunedin, Enterprise, Highland Hammock punctate, mixed fine and moderate over central State Park, Orlando, Tampa. South Carolina: anterior disc, laterally more uniform in size, still Cayce (near Columbia). Mississippi: Red Creek larger in and posterior to lateral fovae where they Wildlife Area (George County). New Jersey: are contiguous, midline broadly, vaguely impressed Martha. basally with punctures closer than in surrounding REMARKS.—The South Carolina specimens were area, punctures very fine along anterior margin collected under cow dung in a seepage area in at middle. Elytra convex, sides slightly arcuate, woods. All others were collected under deer drop- humeri strongly dentate, seven-tenths as wide as pings in wooded areas. Ataenius insculptus super- long, pronotum about two-fifths as long; elytral ficially resembles A. alternatus (Melsheimer) and striae broad and deep; strial punctures coarse, A. cylindrus Horn. very slightly crenating sides of intervals, separated by four times their diameters; intervals narrowly flattened along each side of convex median carina, 13. Ataenius imbricatus (Melsheimer) alternate intervals higher over apical declivity, Aphodius imbricatus Melsheimer, 1844:136. 10th interval flat and finely alutaceous. Meso- Ataenius imbricatus.—Harold, in Gemminger and Harold, sternum weakly carinate between coxae. Metaster- 1869:1066—Horn, 1887:75—Schmidt, 1922:443 Chapin, num with fine median line, disc with close, 1940:20.—Petrovitz, 1962:131. moderate punctures separated by less than their Ataenius sordidus Harold, 1869:103.—Horn, 1887:75. diameters, surface scabrous outward to sides, meta- DESCRIPTION.—Length 3.3 to 4.3 mm; width 1.6 sternal triangle not well defined, finely scabrous to 2.0 mm. Dull, grayish brown to grayish black, within. Abdominal sterna coarsely fluted along legs dark brown; oblong, moderately convex; sur- anterior margins, fluting wider on each succeeding face finely alutaceous, usually with more or less sternum, those of 5th sternum deeper and half argillaceous appearance, covered with short, stubby the length of the sternum, otherwise with scat- setae, those of the elytral intervals closely spaced tered moderate punctures from side to side gen- in longitudinal rows. Head convex, clypeus broadly erally separated by about their own diameters, rounded each side of moderately deep anterior strongly alutaceous at extreme sides. Eroded areas median emargination, sides weakly arcuate to of pygidium scabrous. Anterior femora with peri- nearly straight, the genae rounded, edge finely re- marginal groove, surface closely punctate anteriorly flexed; surface narrowly shining, smooth, and con- with disc scabrous. Middle and hind femora with cave along anterior margin in front of close, fine close, very moderate punctures near coxae, grad- punctures which gradually merge into close lines ually closer into scabrous surface toward knee, of united punctures over greatest convexity, at posterior femoral lines strong, deep, and complete. sides and base of clypeus the lines long and Posterior tibial fringe of eight or nine close, short close, separated usually by less than their width; setae, a short accessory spine of same length and frontal area well marked by dense, much larger an intervening seta between spine and spurs. First punctures; head punctures bear extremely short, posterior tarsal segment one-third longer than long inconspicuous setae. Pronotum one and one-half spur and one-third longer than three following times as wide as long, about one-half as long as NUMBER 154 29 elytra, sides almost straight and parallel, margined HOLOTYPE.—In Museum of Comparative Zo- laterally and basally, the edge weakly crenate with ology. short, stubby setae generally separated by more TYPE-LOCALITY.—"Pennsylvania." than their length, anterior angles obtusely rounded, SPECIMENS EXAMINED.—400+ . posterior angles rounded but distinct; surface, ex- DATES COLLECTED.—March 6 to November IS. cept for a slightly depressed median basal area DISTRIBUTION (Figure 7).—Alabama: Auburn, and one (or sometimes two) small, short diagonal Dadeville, Gulf State Park, Mobile, Salt Mtn. area(s) on each side, smooth, sometimes conspicu- (Clarke County). Arkansas: Devils Dam State Park, ous; the entire surface covered with dense, very Hartford, Hope, Monte Ne Br. (Benton County). moderate, frequently inconspicuously setose punc- Delaware: Georgetown, Rehoboth. District of Co- tures. The anterior angles project forward slightly, lumbia. Florida: Archbold Biological Station, the base usually noticeably arcuate. Humeri strong- Chipley (5 mi E), Daytona, Dunedin, Edgewater, ly dentate. Elytra about twice as long as wide, Enterprise, Fort Myers, Gainesville, Haulover, sides curved inward around shoulders, anteriorly Highlands Hammock State Park, Indian River, nearly straight and parallel. In freshly emerged Key West, Kissimmee, Korishan State Park (Lee specimens the elytral striae are moderately wide County), LaBelle, Lakeland, Lake Letta, Lake and deep, shining, with deep, moderate punctures Placid, Lake Wales, Melbourne, Naples (9 mi N), separated by about three times their diameters, Orlando, Pensacola, Perrine, Punta Gorda, San- the intervals slightly crenated along inner margin; ford, Silver Lake Recreation Area (Leon County), intervals on disc flat, increasingly convex toward Stock Island, Tampa, Wakulla County, Washing- sides except 10th interval, which is nearly flat, ton County, West Palm Beach, Zolfo Springs. all are distinctly alutaceous and have a row of Georgia: Atlanta, Augusta, Demorest (Habersham close, short, stubby setae along the outside margin, County), Hinesville, Milner, Waycross. Illinois: occasionally a few setae widely scattered along "Illinois" (Ulke Coll., Carnegie Museum). Indiana: the inner margin also. Mesosternum weakly cari- Grantsburg, Lake County, Tremont. Kentucky: nate between coxae. Metasternum with an un- Louisville, Wolf Creek Lake (Wayne County). usually long, moderately fine and deep midline, Louisiana: Covington, Gueydan, Harahan, Sam finely alutaceous disc with close, shallow, moderate Houston State Park, Shreveport. Maryland: Glen punctures separated by their diameter or less, Burnie, Hebbville, Hyattsville, Lanham, Marlboro, roughly scabrous outward to sides, the metasternal Sherwood Forest, Tacoma Park. Massachusetts: triangle weak, shallow, and not well defined. Ab- Chicopee, Tingsboro. Michigan: Detroit, Midland dominal sterna minutely alutaceous, fluted along County, Oakland County, Port Huron. Minnesota: anterior margin, the fluting longer on each suc- Alexandria, Minneapolis, St. Paul. Mississippi: Gulfport, Horn Island, Lucedale, Ocean Springs. ceeding sternum, flutings at middle of 5th sternum Missouri: Nevada (Vernon County). Nebraska: much deeper and half as long as the sternum, Brown County (extreme NW corner), Halsey, Holt closely, quite coarsely, shallowly punctate from County, Neligh. New Hampshire: "New Hamp- side to side. Eroded area of pygidium scabrous, shire." New Jersey: Anglesea, Atlantic City, Ocean alutaceous. Anterior femora with perimarginal County, Prosportown, Sea Island City, Wildwood. groove, surface rough, closely, setigerously punc- New York: Peekshill, Rosedale. North Carolina: tate. Middle femora closely, setigerously punctate, Balsam, Black Mtns., Buck Forest, Cedar Mtn., posterior femoral line complete. Posterior femora Clarkton, Falsom, Raleigh, Swan Quarter. Ohio: similar but not quite as closely punctate, femoral Holgate, Marietta. Oklahoma: Broken Bow, Mc- line strong and complete. Posterior tibial fringe Curtain County, Texhoma (near Willis). Pennsyl- of five setae but the middle seta opposite the tarsus vania: Philadelphia, Scarlet Hills. South Carolina: greatly reduced and very short, accessory spine Blackville, Charleston, Clemson, Columbia, Flor- lacking, first tarsal segment longer than long spur, ence, Folley Beach, Jocassee, Liberty, Sullivans longer than following three segments combined. Island, Yemassee. South Dakota: Elk Point. Ten- The male pygidium is longer than that of the nessee: Cookeville, Reelfoot Lake. Texas: Ander- female. son County, Columbus, Corpus Christi, Galveston, 30 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 7.—Distribution of Ataenius puncticollis (LeConte) and A. imbricatus Melsheimer. ~k puncticollis • imbricatus

Kingsville, Lake Refugio, Linden, Lolita, Victoria. species usually have the fringe setae all alike in Virginia: Big Cobbler Mtn. (Fauquier County), size and length. Blacksburg, Cape Henry, Chatham, Dumfries Ataenius imbricatus is placed in a group of very (Prince William State Park), Fort Myer, Fort similar species, most of which occur in Central and Monroe, Middleburg, Nelson County, Norfolk, South America. Rosslyn, Sweet Briar (Amhurst County), Suffolk Jerath (1960:78) described the larva of A. im- (Dismal Swamp), Williamsburg. West Virginia: bricatus (Melsheimer). Hamlin, Orkway Springs. Wisconsin: Bayfield, Carol Beach (Kenosha County), Friendship (Adams County), Wood County. Canada: Ontario: 14. Ataenius superficialis, new species

Dunnville, Point Pelee. PLATE 2b REMARKS.—The most interesting feature of this species is the close resemblance of the posterior DESCRIPTION.—Holotype Male: Length 3.6 mm; tibia 1 fringe to that found in Australian species. width 1.7 mm. Oblong-ovate, convex, covered with Except for the known worldwide species obviously a gray argillaceous coating which does not adhere introduced into Australia, all Australian species to the surface as tightly as in imbricatus, legs and I have examined have a fine hair in the tibial anterior margin of clypeus reddish. Head convex, fringe opposite the first tarsal segment. In A. im- clypeal edge finely, not strongly reflexed, margin bricatus the middle seta of the five setae in the broadly rounded each side of a moderately deep fringe is opposite the tarsus, is much reduced, median emargination, sides weakly arcuate to de- and is much shorter than the others. American pressed, nearly right-angled genae; surface con- NUMBER 154 31 cave, smooth, shining, dark castaneous behind wise finely, roughly alutaceous (covered by ar- emargination, then above very quickly, closely gillaceous coating in holotype). Fourth abdominal from minute to shallowly coarsely punctate, the sternum half as long as preceding sternum; py- intervening spaces finely alutaceous, from middle gidium much longer than in female. Anterior of disc to sides and base the punctures are setiger- femora with perimarginal groove, surface closely, ous, larger, become elongate, crowded, many unit- very roughly sculptured, some setae visible in pro- ing to form lines, especially near front, the setae file. Middle femora minutely alutaceous and are very short and inconspicuous; front and occi- coarsely, shallowly, setigerously punctate, the outer pital area densely covered with shallow, coarse, half closely, roughly punctate, posterior marginal round punctures showing through the argillaceous line strong, deep, complete, with a marginal row coating, frontal-clypeal suture in part bare and of widely spaced, short, stubby setae. Posterior unusually distinct. Pronotum 1.5 mm wide and femora similar in every way except that the coarse 1.1 mm long, anterior angles obtuse, hind angles punctures are generally separated by about twice broadly rounded, sides feebly arcuate, sides and their diameters and there are three or four long, base without distinct marginal groove but sides stiff setae near the knee. Apical fringe of posterior very finely reflexed, sides and base with very short, tibia of four or five short, well-separated setae, stubby marginal setae separated at sides by twice without accessory spine. (The normal number of their length, a little closer opposite humeri; sur- setae is five, with the middle one about half as face everywhere with dense, coarse, setigerous long as the other four.) First segment of posterior punctures, the setae minute and inconspicuous, tarsus noticeably longer than the long spur, the punctures a little finer near anterior margin; a following three segments combined shorter than flat, smooth, minutely alutaceous midline over the long spur. posterior half and a short, dark, uncoated spot Allotype Female: Length 3.6 mm; width 1.7 mm. midway to sides, just posterior to midpoint be- About the only differences from the male seem to tween anterior and posterior margins. Elytra 2.4 be the longer 4th sternum and shorter pygidium. mm long and 1.7 mm wide, convex, ovate, widest The allotype is almost completely denuded of the beyond middle, humeri finely dentate, striae deep, argillaceous coating, and surface sculpture can be wide, mostly shining, except for deep strial punc- seen much more clearly. tures, the punctures not crenating the sides of the HOLOTYPE.—USNM 71737. moderately convex intervals, each interval with TYPE-LOCALITY.—Big Pine Key, Florida. Holo- a row of short, stubby setae along outside margin, type, allotype, and five paratypes collected together occasionally a few setae along inner margin also, under animal dropping (possibly from a racoon), elytral margin with similar setae, the tenth inter- 15 May 1959, O. L. Cartwright. val not as convex. Mesosternum shagreened, with SPECIMENS EXAMINED.—Seven. fine sculpture and the usual very fine, short, de- DATE COLLECTED.—May 15. cumbent hair, sharply carinate between the coxae. DISTRIBUTION (Figure 8).—Paratypes. Florida: Metasternal disc coarsely, closely, shallowly punc- Big Pine Key. tate, midline long, shallow, surface rough and REMARKS.—Ataenius superficialis is closely re- scabrous outward to sides, metasternal triangle lated to A. imbricatus (Melsheimer) but is shorter, weakly developed, masked by rough sculpture. more oval in shape, and the argillaceous coating First visible abdominal sternum with fine posterior does not adhere so tightly. marginal line, remaining four sterna with fine flut- ing along anterior margin, longer on each following sternum, flutings of 5th sternum nearly half as 15. Ataenius miamii Cartwright long as sternum, surface very closely, shallowly, coarsely punctate with punctures within and sur- Aiaevius miamii Cartwright, 1934:200; 1941:33. rounding area very finely alutaceous. All coarse DESCRIPTION.—Length 3.2 to 4.2 mm; width 1.5 punctures of underside minutely setigerous under to 1.9 mm. Oblong-oval, convex, piceous, opaque, high magnification. Pygidium with apical smooth anterior margin of head and legs reddish, antennae margin very fine or possibly absent, surface other- testaceous. Head convex, clypeus broadly rounded 32 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 8.—Distribution of Ataenius strigatus (Say), A. stroheckeri, new species, and A. superficialis, new species. • strigatus o stroheckeri * superficialis

each side of moderately deep, median emargina- by 1.7 mm wide, humeri strongly dentate, striae tion, sides arcuate to narrowly rounded genae, the deep, strial punctures slightly crenating inner mar- genae greater than a right angle, clypeal margin gin of intervals, subcarinately convex, outer margin weakly concave, more noticeably so at middle, edge of interval with row of shallow, moderate setiger- very finely, inconspicuously reflexed; clypeal sur- ous punctures, the setae short, semierect, lateral face shining, narrowly impunctate around margin, intervals not different from others, entire surface elsewhere opaque, densely punctate, the punctures alutaceous. Mesosternum roughly alutaceous with much finer anteriorly, outward from a few simple short, recurved hair, sharply carinate between the punctures at middle the very moderately coarse coxae. Metasternum minutely alutaecous, midline punctures coalesce into short, longitudinal lines, long, moderately deep, disc with scattered, shal- above the frontal suture the punctures round, low, coarse punctures a little closer anteriorly but slightly larger, practically contiguous. Pronotum generally separated by about their diameter, scab- averaging about 1.6 mm wide by 1.1 mm long, rous outward to sides, metasternal triangle not angles all obtusely rounded, sides subparallel, base deep or sharply defined. Abdominal sterna aluta- evenly arcuate, sides and base finely margined, ceous, coarsely, shallowly, rather closely setigerously marginal setae very short and inconspicuous, sur- punctate, the setae very short, punctures separated face densely, shallowly, moderately coarsely punc- by their diameter, fluting along anterior margin tate throughout, slightly smaller over anterior disc, of 5th sternum nearly half as long as sternum. punctures minutely setigerous, especially at sides. Pygidium with narrow, smooth apical lip, disc Elytra convex, oval, averaging about 2.3 mm long widely, roughly eroded. Anterior femora with peri- NUMBER 154 marginal groove, surface finely scabrous with nu- flexed, broadly rounded each side of strong, broad merous, very short setae. Middle femora with median emargination, sides moderately arcuate to numerous fine, setigerous punctures, the setae very rather sharply angled genae; surface of anterior short, postfemoral marginal line deep and com- fifth smooth and shining, middle convexity mi- plete. Posterior femora same as middle femora nutely, densely punctate anteriorly then gradually but with three to five coarse, setigerous punctures very finely punctate over a decreasing area to upper at knee, the conspicuous setae moderately long. fourth, over basal fourth and down laterally to Posterior tibial fringe of six setae, without acces- smooth margin densely covered with elongate sory spine, first ta'rsal segment slightly longer than punctures, many of which unite into long furrows long spur, and longer than the following three especially toward sides basally; frontal and genal segments combined. Fourth abdominal sternum punctures dense, round, fine on genae, moderately shorter at middle in males and the pygidium rela- coarse and shallow along front and base. Pronotum tively longer than in females. about two-thirds as long as wide, convex, sides HOLOTYPE.—USNM 50764. and base slightly arcuate, fimbriate-crenate, mod- TYPE-LOCALITY.—Miami, Florida. erately deeply margined, anterior angles obtusely SPECIMENS EXAMINED.—142+ . angled, posteriorly the sides evenly rounded into DATES COLLECTED.—March 20 to December 29. base; surface densely, shallowly, minutely setiger- DISTRIBUTION (Figure 9).—Alabama: Spring Hill. ously punctate, the punctures coarse, shallow, prac- District of Columbia. Florida: Alachua County, tically contiguous from anterior angles around and Bell, Dunedin, Fort Myers, Gainesville, Miami, over basal half of pronotum, very gradually smaller Pensacola, Punta Gorda, Sanford, Seminole Coun- and less close to anterior margin at middle but ty, Tampa. Georgia: Jekyll Island, St. Simons Is- still separated by less than their diameters, those land. Illinois: Olive Branch. Maryland: Flag Pond at anterior margin about half the size of those at (Kenwood Beach). Mississippi: Biloxi (Keesler base and about the same size as the frontal-basal Field), Horn Island. New Jersey: Lakehurst. New punctures of the head but not as close. Elytra York: Staten Island. North Carolina: Highlands convex, oval, about three-fifths as wide as long, (Satulah Mm.). South Carolina: Aiken, Batesburg, humeri dentate, elytral striae moderate, shining, Charleston, Clemson, Folly Beach, Isle of Palms, strial punctures deep, intervals tectiform, the Lancaster, Nichols, Sullivans Island, Summerville. median ridge fine and shining, the flat slope each Texas: "Texas." Virginia: Fredericksburg. side minutely alutaceous, the outside slope with REMARKS.—Ataenius miamii may be recognized a row of short, recurved, quite inconspicuous setae, by its dull surface, short suboval form with sub- lateral intervals not noticeably different. Meso- carinate elytral intervals, and very short incon- sternum shagreened with strong alutaceous sculp- spicuous pubescence. It may be confused with A. ture and fine setigerous punctures, setae recurved imbricatus, but A. imbricatus is longer and has as usual, strongly, sharply carinate between the flat elytral intervals and much more conspicuous coxae. Metasternum with strong, deep midline, pubescence. Although rather widely distributed in disc with close, coarse, shallow setigerous punc- the eastern states it is usually not a common tures, scabriculate outward to sides, triangle species. moderate, scabriculate. First abdominal sternum margined posteriorly, remaining sterna fluted along anterior margin, increasingly wider posteriorly 16. Ataenius havanensis Bahhasar with fluting of terminal sternum half as long as Ataenius havanensis Balthasar, 1938:56; I952a:227. sternum; surface of all sterna closely, shallowly, Ataenius miamii. Chapin, 1940:41 [not Cartwright, 1934: moderately coarsely, minutely setigerously punc- 200]. tate. Pygidium eroded, the margins finely carini- Ataenius fleutiauxi Paulian, 1947:42. [New synonomy.] form, anterior femur with perimarginal groove, DESCRIPTION.—Length 3.5 to 4.2 mm; width 1.7 surface moderately closely setigerously punctate. to 1.9 mm. Convex, elongate-oval, black or grayish Middle and hind femora not closely, shallowly, black, anterior margin of clypeus and legs reddish finely punctate, posterior marginal line strong and brown. Head convex, clypeal margin finely re- complete. Posterior tibial fringe of six short setae, 34 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 9 Distribution of Ataenius pseudohirsutus, new species, A. miamii Cartwright, A. barberi, new species, and A. californicus Horn, o pseudohirsutus • miamii • barberi it califomicus

without accessory spine; first tarsal segment longer tiguous and twice the size of those anteriorly. In than long spur and longer than the following three A. havenensis the elytral intervals are noticeably segments combined. Male pygidium relatively tectiform with the narrow ridge shining; in A. longer than in female. miamii the elytral intervals are rarely shining and HOLOTYPE.—In Deutsches Entomologisches In- always more evenly rounded. stitut. The Stock Island specimens were taken in a TYPE-LOCALITY.—Cuba: "Umgebung von Ha- blacklight trap by F. A. Buchanan on 9 August vana." 1968. The Garden Key specimen was in sand and SPECIMENS EXAMINED.—10 from United States; debris near the beach. many from West Indies. DATES COLLECTED.—May 9 to August 9. DISTRIBUTION (Figure 10).—Florida: Garden 17. Ataenius semipilosus Van Dyke Key, Stock Island (Monroe County). West Indies: Ataenius semipilosus Van Dyke, 1928:158. Barbados, Cuba, St. Croix. St. Kitts. REMARKS.—Ataenius havanensis is superficially DESCRIPTION.—Length 3.2 to 4.3 mm; width 1.4 very close to A. miamii Cartwright but is noticeably to 1.8 mm. Oblong-oval, convex, shining, dark different on direct comparison. The pronotal punc- castaneous. Head strongly convex, clypeal margin tures of A. miamii are nearly uniform in size and finely reflexed, subdentate each side of moderately smaller than in A. havanensis, in which the basal deep median emargination, sides feebly arcuate to punctures of the pronotum are practically con- rounded genae, the genae with four or fivemod - NUMBER 154 35

FIGURE 10.—Distribution of Ataenius punctifrons, new species, A. erratus Fall, and A. havanensis Balthasar. •k punctifrons • erratus o havanensis

erately long setae; clypeal surface finely, transversely row of fine, setigerous punctures, the setae very wrinkled anteriorly, the wrinkles becoming ob- fine, nearly as long as width of the intervals but scure over and above median area, basally with not very conspicuous, edge of elytra fimbriate, with indistinct very moderate punctures, front and occi- the setae separated by their length or less. Meso- put with wide transverse band of moderate punc- sternum shagreened as usual, carinate between the tures separated by one to four times their diameter. coxae. Metasternum shining, midline moderately Pronotum convex, about three-fourths as long as deep, disc punctate, the scattered punctures fine wide, lateral edges hidden when viewed from at middle, increasing in size outward to coarse directly above, all angles obtusely rounded, sides at sides, close and rough at extreme sides, meta- and base arcuate, strongly margined, laterally sternal triangle deep, finely scabrous within. Ab- fimbriate with moderately long, fine setae, crenu- dominal sterna moderately and coarsely closely lations indistinct; surface quite evenly, coarsely punctate from middle to sides, some setigerous punctate throughout, punctures separated by less at sides, 5th sternum with a row of very close than one to four times their diameters, a little setigerous punctures, the setae long and fine; first smaller approaching anterior margin. Elytra visible sternum with fine posterior marginal line, elongate-oval, one-fourth longer than wide, con- the other four sterna finely fluted along anterior vex, humeri sharply dentate, striae moderate, deep, margin, the fluting longer on each successive seg- strial punctures crenating sides of the moderately ment, that of the fifth sternum half as long as the convex intervals, lateral intervals not different, sternum. Pygidium with narrow, shining, apical outside margin of interval, occasionally inside, with lip and marginal row of long, fine setae, disc 36 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY roughly eroded. Anterior femora with perimarginal terior angles obtusely rounded, posterior angles groove, surface smooth in front, coarsely, closely very broadly rounded into base; surface quite uni- punctate posteriorly. Middle femora shining, with formly punctate throughout with mixed fine and row of coarse setigerous punctures along anterior rather shallow, very coarse punctures, the latter edge, and a group of similar punctures over outer generally separated by their diameter or less. Elytra third, posterior femoral line short, several setiger- five-sevenths as wide as long, two and one-third ous punctures along posterior edge of femur. Pos- times as long as pronotum; humeri slightly dentate, terior tibial apical fringe, six short, even setae, sides weakly arcuate, striae moderately fine and a strong triangular accessory spine, and an inter- deep, fine strial punctures widely spaced; intervals vening seta between the spine and spurs; long convex with a row of moderate setigerous punc- spur, first tarsal segment, and following three seg- tures each side along the striae, the setae conspicu- ments combined about equal in length. The sexes ous, erect, fine, and about three-fourths as long are not easily separated but the pygidium in the as width of the intervals, distance between setae male is longer than in the female. variable but averaging about as far apart as their HOLOTYPE.—In Van Dyke Collection, California length; surface of intervals frequently minutely Academy of Sciences. alutaceous under high magnification (X 54). Tenth TYPE-LOCALITY.—"Texas Pass, Dragon [Dra- interval slightly flatter, otherwise all intervals goon] Mountains, Arizona." about the same. Mesosternum very weakly convex SPECIMENS EXAMINED.—84. between the coxae. Metasternum with long, fine, DATES COLLECTED.—June 8 to August 12. weakly impressed midline ending in a slight pore DISTRIBUTION (Figure 5).—Arizona: Baboquivari anteriorly; disc with scattered, fine punctures sep- Mts., Benson, Chiricahua Mts., Cobabi Mts., Doug- arated by two or three times their diameters, a las, Globe, Nogales, Portal (in Neotoma nest), small group of very moderate punctures at extreme Sabino Canyon (Catalina Mts., Pima County), sides; metasternal triangle not sharply defined, Santa Cruz Village, Texas Pass (Dragoon Mts.), sometimes with very fine alutaceous sculpture Tucson. Texas: 30 mi N of Presidio. within. Abdominal sterna with the usual fluted REMARKS.—Superficially, A. semipilosus resem- anterior margin, the fluting of the 5th sternum bles A. hirsutus, but the uniform size of the pro- deep and half as long as the sternum; surface of notal punctures of A. semipilosus clearly separate sterna with scattered, not numerous, fine to very the two species. shallow, coarse, close punctures at sides, the latter with fine hairs decumbent on anterior sterna and gradually more erect on posterior sterna, those of 18. Ataenius hirsutus Horn the terminal sternum from side to side and quite Ataenius hirsutus Horn, 1871:288; 1887:86.—Schmidt, 1922: long; the rather wide apical lip and the eroded 428. area of pygidium with similar, sparse, long hairs. Anterior femora with perimarginal groove, sur- DESCRIPTION.—Length 3.5 to 4.8 mm; width 1.6 face smooth, shining, with a few scattered fine-to- to 2.1 mm. Dark castaneous to piceous black, ob- moderate punctures. Middle and hind femora long, convex, shining, elytra pubescent. Head mod- shining, smooth, with scattered fine punctures, erately convex; clypeus subangulate each side of posterior femoral lines short, one-fourth to one- deep median emargination, sides weakly arcuate, half length of femur. Posterior tibia with fringe genae nearly right-angled, edge finely reflexed; of five setae, a very short accessory spine, and an surface transversely wrinkled anteriorly, posterior intervening seta between spine and spurs, this clypeus and frontal area closely, moderately punc- latter not easy to see. First tarsal segment equal tate, the punctures generally separated by one to length of long spur and very slightly longer diameter or less. Pronotum convex, two-thirds as than following three segments combined. The long as wide, sides and base arcuate, strongly mar- males have a longer pygidium and the spur of the gined, crenate fimbriate, the crenations conspicu- anterior tibia is bent inward at the tip. ous, the setae moderately long, laterally separated by their own length, slightly longer at anterior HOLOTYPE.—Academy of Natural Sciences of angles, shorter and closer at middle of base, an- Philadelphia, No. 3615. NUMBER 154 37 TYPE-LOCALITY.—Camp Grant, Arizona. vex, humeri finely dentate, 2.7 mm long, 1.9 mm SPECIMENS EXAMINED.—218+ . wide, striae fine, deep, strial punctures crenating DATES COLLECTED.—June 23 to September 1. inner margins of the very weakly convex, minutely DISTRIBUTION (Figure 6).—Arizona: Agua Fria, alutaceous intervals, lateral intervals not different, Benson (Black Dike Project), Sierritas, Buckeye, all with a row of close, minute punctures near Colossal Cave Park, Cutter (Gila County), Doug- each margin, laterally and over apical declivity las, Fort Grant, Globe, Huachuca Mts., Kits Peak the punctures bear very fine, short, erect setae, Rincon (Baboquivari Mts.), Molino Canyon (Santa elytral margin with similar rather inconspicuous Catalina Mts.), Nogales, Oracle, Organ Pipe setae also. The sutural interval bears a single line Cactus National Monument (Pima County), Pa- of close, minute punctures without larger punctures jarito Mts., Palo Alto, Pena Blanca (Pajarito Mts.), near scutellum. Mesosternum shagreened with very Phoenix, Pinal Mts. (Gila County), Portal (in fine alutaceous sculpture and fine, short, de- nest of Neotoma), Sabino Canyon (Santa Catalina cumbent hair, finely carinate between the coxae. Mts.), Sacaton, Safford, Santa Cruz County, Tempe, Metasternum smooth, shining, disc with evenly Tucson, Wickenburg (Maricopa County). Kansas: distributed minute punctures, midline long, mod- Wyandotte County (Psota Coll., Field Museum). erately deep, ending in a deeper pore anteriorly New Mexico: Las Cruces (near), Lordsburg. Texas: between the bases of the coxae, smooth outward Dallas, Summerfield. to sides and in the metasternal triangle, only a REMARKS.—Ataenius hirsutus is identified by the suspicion of a very shallow, roughened area at very hairy elytra and the evenly distributed, mixed extreme sides. First visible abdominal sternum very coarse and fine punctures of the pronotum. with posterior marginal line, following sterna It is sometimes attracted to lights in enormous fluted along anterior margin, fluting of all but numbers in northern Mexico. 5th sternum become much longer at the sides, those of the 5th sternum deeper and half the length of the sternum, surface otherwise smooth and shining 19. Ataenius pseudohirsutus, new species but with very fine punctures at middle and scat- DESCRIPTION.—Holotype Male: Length 4.2 mm; tered, very shallow, moderate punctures outward width 1.9 mm. Oblong, convex, piceous, anterior to sides, 4 th sternum at middle about half as long margin of head and pronotum and legs reddish, as preceding and with three or four long, erect moderately shining. Head convex, clypeal edge setae in a transverse row near sides, 5th sternum finely reflexed, somewhat angularly rounded each with a similar row of long setae almost meeting side of moderately deep median emargination, at middle. Pygidium with rather wide, convex, sides very slightly arcuate to nearly right-angled shining, apical lip bearing three or four erect genae; clypeal surface transversely wrinkled an- setae, disc deeply, roughly eroded. Anterior femora teriorly, finely, closely punctate above greatest con- with perimarginal groove but it is weak and vague vexity, frontal area not quite as closely punctate, posteriorly, surface shining, vaguely uneven with the very slightly larger punctures separated by a few shallow, fine punctures; anterior spur of fore- about their diameter, occipital area with more tibia hooked downward at apex. Middle and hind widely separated punctures. Pronotum moderately femora smooth, shining, with scattered, very minute convex, 1.2 mm long by 1.7 mm wide, anterior punctures and two or three coarse setigerous punc- angles obtusely rounded, posterior angles widely tures at knee, posterior marginal lines weak, ex- rounded, sides and base margined, slightly crenate, tending inward about two-fifths of distance from fimbriate with moderately long, almost transparent knee. Posterior tibial apical fringe of five setae, setae, longest at anterior angles where their length accessory spine not quite as long, and an inter- is twice the distance between the setae; surface vening seta between spine and spurs. First posterior punctures mixed fine and coarse, the latter shal- tarsal segment and long spur about equal in length, low and more numerous from halfway outward to longer than following three segments combined. sides, those of discal area finer and less numerous, Allolype Female: Length 4.6 mm; width 2.6 mm. the evenly spaced fine punctures generally sep- Collected at San Antonio, Texas. The spur of the arated by about twice their diameters. Elytra con- anterior tibia is not apically curved downward and 38 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY the pygidium is shorter, with a very narrow, trans- tures on the sutural interval near the scutellum, verse, eroded discal area. Otherwise there seems to as found in A. hirsutus, and the discal elytral in- be little to separate the two sexes. tervals being nearly flat. Both A. hirsutus and A. HOLOTYPE.—USNM 71738. pseudohirsutus are very similar to A. setiger Bates TYPE-LOCALITY.—The holotype bears data as (1887:98), but A. setiger has a much less punctate follows: "Austin, Texas, June 29, Collection H. pronotum and the elytra have long noticeable Soltau." setae, as in A. hirsutus, except over the anterior SPECIMENS EXAMINED.—107. disc, the area around the scutellum being prac- DATES COLLECTED.—May to September. tically devoid of setae. DISTRIBUTION (Figure 9).—Paratypes. Arizona (11): Chiricahua Mountains (8), 17 July 1957, 2 20. Ataenius sabinoi, new species June, 16 July 1959, D. J. and J. N. Knull (OSU). Pena Blanca Lake (3), 26 July 1963, G. H. Nelson DESCRIPTION.—Holotype Male: Length 3.4 mm; and family. Massachusetts (1): Plymouth, C. T. width 1.6 mm. Oblong-ovate, convex, shining, Brues (MCZ) [a very doubtful record]. Texas (94): dark red-brown. Head convex, edge of clypeus very "Texas" (10): 1932, Wickham Coll. (3, USNM); finely reflexed, finely dentate each side of moder- no date, UlkeColl. (2, Carnegie Museum); no other ately deep median emargination, sides arcuate to data (2, Oregon State College; 2, Casey Coll., quite sharply rounded, almost right-angled genae; USNM; 1, USNM). Austin (9), 29 June, H. Soltau surface of clypeus narrowly concave back of median Coll. (USNM). Brownsville (8): no date, Wickham emargination, otherwise convex, faintly, trans- (1, Casey Coll., USNM); no date, "Catalog 916" versely wrinkled with scattered, vague, minute (1); no date, Townsend (4, USDA); 22 June 1895, punctures along basal sutural area, frontal occip- Townsend (1, USDA); 24 May 1941, W. Good- ital area with close, fine punctures separated by paster (1). Cameron County (2), September, Wick- their diameters. Pronotum 1.45 mm wide and 1.0 ham Coll. (USNM). Columbus, (2), 8, 13 August, mm long, convex, anterior angles obtusely rounded, Hubbard and Schwarz. Devils River (1), High- posterior angles rounded but distinct, sides slightly way 90, 11 July 1941, W. F. Barr (Barr Coll.). arcuate, base arcuate, sides and base margined, Edinburg (3), no date, Chittenden Coll. (USNM). edge fimbriate, inconspicuously crenate, the mar- Hearne (1), 8 June, no other data. Lake Corpus ginal setae very moderate in length, separated by Christi State Park (1), 15 June 1971, G. H. Nel- about their own length; surface everywhere evenly, son. Laredo (1), 2 July 1947, B. Malkin. Lee closely, coarsely punctate, generally separated by County (2), no other data (Casey Coll., USNM). their diameter or less, only in the anterior, middle New Braunfels (3): 27 June, Soltau (2); 25 July, area do they gradually become very moderate in Wickham (1, Wickham Coll., USNM). Pharr (1), size. Elytra 2.3 mm long and 1.6 mm wide, con- at light, 25 May 1947, George B. Vogt. San An- vex, sides strongly arcuate, humeri finely dentate, tonio (12): 22 June, Soltau (1); no other data striae strong and deep, strial punctures weakly (11, includes allotype). San Diego (4): 25 May crenating inner margins of the more or less cari- (3, USDA); 26 June (1, USDA). San Patricio nately convex intervals, except near the scutellum County (1), no date, "US 77 and Tex. 9, animal the intervals are slightly concave and minutely burrow," Griffin. Sharpsburg (2), 10 May, Hub- alutaceous along each side and have a row of bard and Schwarz. Sinton, Welder Wildlife Foun- setigerous, rather coarse punctures, the row along dation (22), 3 May 1967, A. and M. E. Blanchard. the outside margin being especially noticeable, Uvalde (2), 930 ft, 18-20 June, Wickham (Wick- the 10th interval is a little flatter than the others, ham Coll., USNM). Zavalla County, Nueces River the fine, short setae are more noticeable laterally (7): 4 July 1910, no other data (1); 1 July 1910, and over the apical declivity, posteriorly the edges Pratt (6). of the elytra are noticeably crenate with the setae REMARKS.—Ataenhis pseudohirsutits, as the name and crenations widely separated. Mesosternum indicates, is very close to A. hirsutus Horn. It shagreened with fine alutaceous sculpture and differs in having much less conspicuous elytral short appressed hair, sharply, finely carinate be- setae, in lacking the basal row of very coarse punc- tween the coxae. Metasternum shining but mi- NUMBER 154 39 nutely alutaceous, midline strong and deep, disc 21. Ataenius vandykei, new species and outward to sides fine to moderate punctures DESCRIPTION.—Holotype Female (?): Length 3.5 separated by about their diameter, the fine punc- mm; width 1.6 mm. Oblong, convex, moderately tures are along the midline and on anterior and shining, head and pronotum dark castaneous, posterior areas; scabrous at extreme sides, meta- elytra darker, almost piceous, elytra rough, setiger- sternal triangle deep, well defined, finely scabrous ous punctures with very fine, short setae. Head and extending farther toward sides than in most convex, clypeal margin finely reflexed, sharply, species. First visible abdominal sternum with pos- triangularly dentate each side of moderate median terior marginal line, remaining four sterna with emargination, sides weakly arcuate to sharply increasingly wider fluting along anterior margin, rounded, almost right-angled genae; clypeal sur- the fluting of the 5th sternum at middle half as face transversely wrinkled anteriorly, middle of long as the sternum, surface punctate from side disc narrow, minutely punctate, basal half closely, to side, very moderate in size at middle to coarse very finely punctate, the punctures elongate, gen- and shallow at sides, generally separated by one erally twice their width, tending to form lines or two diameters and in two very irregular trans- toward the sides; front and occiput evenly, densely, verse rows. The 4th sternum is shortened at middle rather finely punctate, the punctures round at to about three-fourths the length of the preceding middle, slightly transversely elongate toward sides. sternum. Pygidium with very narrow, shining, Pronotum 1.5 mm wide and 0.9 mm long, convex, apical lip, disc deeply eroded. Anterior femora anterior angles rather widely, evenly rounded, pos- with perimarginal groove, surface with fine setiger- terior angles broadly, evenly rounded from sides ous punctures separated by two or three times into base, base slightly angular at middle, sides their diameters. Middle and hind femora similarly and base finely margined, edge with extremely punctate, posterior femoral lines deep and com- minute, short setae and crenations under high plete. Apical fringe of posterior tibia of six short magnification; surface everywhere densely, evenly, setae, a strong accessory spine, and an intervening very moderately punctate. Elytra convex, 2.2 mm setae between the spurs and spine. Metatarsus long, 1.6 mm at widest, slightly beyond middle, and long spine equal, longer than following three sides feebly arcuate, humeri sharply dentate, striae segments combined. fine, moderately deep, deep strial punctures slightly crenating inner margins of the subcarinately con- HOLOTYPE.—USNM 71739. vex intervals; the intervals are more or less flat- TYPE-LOCALITY.—Arizona, Tucson (Catalina tened and alutaceous each side with the convex foothills), "Den #2, Neotoma sp.," Berlese funnel, middle broken into round-to-elongate tubercles by 2 August 1962, W. L. Nutting, P. Mehringer. a median row of fine, setigerous punctures, the SPECIMENS EXAMINED.—Four. punctures separated by two to three times their DATES COLLECTED.—July 30 to August 28. diameters, the setae very short and stubby; apically DISTRIBUTION (Figure 4).—Paratypes. Arizona the striae become wider, the intervals narrow and (2): Pima County, Tucson (10 m E), at light, 30 more sharply convex; the lateral intervals not July 1969, W. Suter. Sabino Canyon (1), 9 August different. Mesosternum shagreened as usual, sur- 1953, G. D. Butler. Mexico (1): Baja California: face sculpture fine with very fine, short hair. Meta- La Paz (25 mi W), light trap, 30 August 1959, sternum shining, midline strong and deep, disc K. W. Radford and G. F. Werner. closely, moderately punctate, finely roughened out- REMARKS.—Paratypes measure 3.7 and 3.8 mm ward to sides where the sculpture is a little coarser, in length. I found no differences otherwise. metasternal triangle transversely elongate, the very Ataenins sabinoi is very similar to A. semipilosus fine, rough sculpture within extending out to sides Van Dyke but these species are easily separated of sternum. First visible abdominal sternum strong- by differences in the elytra. Ataenius semipilosus ly punctate with strong, deep posterior marginal has evenly convex elytral intervals and much line, next three sterna finely fluted along anterior longer, more conspicuous setae. The two species margin, the last with fluting very long, half the were collected together in the same Neotoma nest. length of the sternum, surface of middle three 40 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY sterna closely, shallowly, setigerously, moderately arcuate, anterior angles obtuse, hind angles very punctate, the 5th sternum much more finely punc- broadly rounded sides to base, sides and base finely tate, all setae very short and not very conspicuous. margined, finely crenate, marginal setae short and Pygidium with fine apical margin, eroded disc close, separated by a trifle more than their own finely scabrous. Anterior femora with perimarginal length; surface densely, moderately coarsely punc- groove, surface roughly punctate. Middle and hind tate, the punctures practically contiguous and same femora with scattered, moderate, finely setigerous size as occipital punctures of head. Elytra one-half punctures, posterior marginal line fine, complete. longer than wide, humeri dentate, striae moderate, Posterior tibial apical fringe of seven setae, longer finely punctate, intervals convex, strongly crenate at each side, without accessory spine. Long spur, along inner margin, cutting into a row of close, first posterior tarsal segment, and following three moderate punctures, a row of similar closely placed segments combined about equal in length. punctures along outside margin, the punctures of TYPE.—USNM 71740. the outside row separated by their own diameters TYPE-LOCALITY.—"San Berdino [Bernardino] or less, those of the inner side not as close, sutural County, California. Collection Coquillett." The interval with a single row, all but the sutural pin also bears the numbers 1804 and 3320, the row become obscure over apical elytral declivity, lat- meanings of which are unknown. erally the intervals become alutaceous, the outside SPECIMENS EXAMINED.—The unique holotype. row of punctures moves up to the center of the DATE COLLECTED.—Unknown. convexity and produces a rough, confused surface; DISTRIBUTION.—See Figure 5. all of the dorsal coarse punctures of head, pro- REMARKS.—This species—named in honor of Dr. notum, and outside rows of the intervals are finely Edwin C. Van Dyke, a former well-known Cali- setigerous, the setae extremely short on the head, fornia coleopterist—is quite unique among very gradually more noticeable posteriorly over the Ataenius of United States and Canada. It is the elytra. Underside shining, coarsely, setigerously only species having such rough, tuberculate elytral punctate throughout, the setae extremely short. intervals; and the holotype (probably a female) Metasternal midline fine, moderately deep, discal is unusual in being almost bicolored, probably punctures coarse, separated by their own diameter not the usual coloration. The hind tarsi were acci- which is greater than width of midline, punctures dentally broken and lost after the description had outward to sides larger, shallow, masked over outer been written. fourth by alutaceous sculpture, metasternal tri- angle moderately deep, not sharply delimited, roughly alutaceous within. Abdominal sterna 22. Ataenius confertus Fall everywhere coarsely, closely punctate, separated at middle by their diameter or less, shallower, coales- Ataenius confertus Fall, 1909:162. cing and masked by alutaceous sculpture at lateral Ataenius cribratus Van Dyke, 1928:156. [New synonymy.] margin; anterior margin closely fluted, the fluting DESCRIPTION.—Length 4.0 to 4.8 mm; width 1.8 slightly longer on each succeeding sternum pos- to 2.0 mm. Dark reddish brown, elongate-oblong, teriorly, fluting nearly half the length of the 5th moderately shining, convex. Head moderately con- sternum. Eroded area of pygidium extensive but vex, shining anteriorly, dull basally; clypeus not depressed, smooth apical margin very narrow. sharply, triangularly dentate each side of wide, Anterior femora with perimarginal groove, surface moderately deep emargination, sides arcuate to coarsely, roughly, closely punctate. Middle and right-angled genae, margin finely reflexed; anterior hind femora coarsely but not as closely punctate, surface and up over greatest convexity strongly, punctures of hind femora less close and separated transversely rugose-tuberculate, mixing gradually generally by more than their diameters, posterior with dense, very moderate punctures, frontal basal femoral lines short, about one-fourth the distance area densely, more coarsely punctate, the punctures from knee to trochanter. Posterior tibia without contiguous, deep, alutaceous within. Pronotum accessory spine, fringe of eight or nine coarse convex, lateral margins hidden from directly above, setae. Hind tarsus shorter than tibia, first tarsal about one-third wider than long, sides slightly segment slightly shorter than long spur, slightly NUMBER 154 41 longer than following three segments combined. erately deep median emargination, sides moder- The female pygidium is much wider than in the ately arcuate to obtusely rounded genae, the genae male. with three or four noticeable lateral setae; surface NEOTYPE (present designation).—In California of clypeus weakly concave near margin, especially Academy of Sciences. behind median emargination, also a vague shallow TYPE-LOCALITY.—5 mi W of San Bartolo, Lower depression each side at about anterior fourth in California. Collected by Michelbacher and Ross, most specimens, surface otherwise with scattered 13 July 1938. (Neotype.) minute to very fine punctures generally separated SPECIMENS EXAMINED.—107. by two to four times their diameters, front and DATES COLLECTED.—June 24 to September 27. occiput with widely scattered, moderate punctures DISTRIBUTION (Figure 11).—Arizona: Brown Can- from side to side. Pronotum convex, sides partly yon (Baboquivari Mts.), Bear Valley Ranch invisible from directly above, about 1.2 mm wide (Santa Cruz County), Chiricahua Mts., Cochise and 0.8 mm long, angles obtusely rounded, sides Stronghold (Dragoon Mts.), Douglas, Globe, Kits and base margined, edge fimbriate-crenate, the Peak Rincon (Baboquivari Mts.), Madera Canyon, setae club-shaped, their length rather short, about Nogales, Patagonia, Pena Blanca (Santa Cruz twice the diameter of largest pronotal punctures, County), Sabino Canyon, foothills Santa Catalina usually separated by more than their length, crena- Mts., Texas Pass, Tucson, Wilcox. New Mexico: tions inconspicuous except at posterior angles; Las Cruces. surface quite evenly punctate with mixed variable REMARKS.—Type of Ataenius confertus, a unique punctures, fine to coarse, those over anterior disc specimen from San Jose del Cabo, Baja California; generally smaller than elsewhere. Elytra convex, type of A. cribratus Van Dyke, San Xavier Mission, oval, 1.9 mm long and 1.4 mm wide, humeri very near Tucson, Arizona. Dr. Fall (1909:163) stated finely dentate, elytral striae strong and deep, strial the type of A. confertus was in the California punctures deep, separated by three-fourths the Academy of Sciences collection; however, neither width of the intervals, slightly crenating the weakly this nor the types of other species mentioned in convex intervals, some scattered, very fine punc- the same paper are now in that collection. In the tures which are more noticeable on lateral inter- same paper Fall (1909:161) states "these descrip- vals and over the apical declivity where the tions were written some eight or nine years ago," intervals become narrow and convex, the striae in other words about the year 1900, and since none wider; edge of elytra fimbriate-crenate with notice- of the types can now be found it is quite possible, able setae quite similar to the pronotal fringe. according to Mr. Hugh B. Leech, that the lot had Mesosternum as usual with fine sculpture and very been received but not accessioned before the great fine, short, decumbent hair, sharply carinate be- earthquake and fire in 1906, and that they were tween the coxae. Metasternum shining, strong lost in that catastrophe. Since the type is not in deep midline, a few scattered, fine punctures, the Fall collection it is presumably lost. The near- punctate-rugose at extreme sides, an eroded line est locality represented at present is San Bartolo, anteriorly around the middle coxae, metasternal about 50 miles north of San Jose del Cabo. The triangle deep, elongate, scabrous within. First ab- Museum of Comparative Zoology has a series of dominal sternum with posterior marginal line, the specimens from Tucson, Arizona, determined by following four sterna finely fluted along anterior Dr. Fall as being A. confertus. margin, the fluting becoming longer at the sides on middle three sterna and longer at middle on the 5th, surface punctate, scattered and finer at 23. Ataenius saramari Cartwright middle, close and coarser at sides. Disc of pygidium roughly eroded. Anterior femora with perimarginal Ataenius saramari Cartwright, 1939:360. groove, smooth anteriorly, rough posteriorly. DESCRIPTION.—Length 3.0 to 3.2 mm; width 1.4 Middle and hind femora smooth, shining, two or to 1.5 mm. Oblong-ovate, convex, piceous, shining. three coarse setigerous punctures at knee, posterior Head convex, clypeal margin very finely reflexed, marginal lines strong, complete. Ten short, close, with just a trace of angulation each side of a mod- equal setae in apical fringe of hind tibiae, without 42 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 11.—Distribution of Ataenius confertus Fall, A. ovatulus Horn, A. utahensis, new species, and A. griffini, new species. •*• confertus • ovatulus • utahensis O griffini

accessory spine. Metatarsus and long spur equal, transverse row of stiff setae on the 5th abdominal slightly longer than next three tarsal segments sternum, and concave margin of the clypeus help combined. In the male the penultimate abdominal distinguish it from other species. All known speci- sternum is about two-thirds as long as the preced- mens have been collected in Florida, most of them ing sternum and the pygidium is relatively longer. under leaf debris of Pinus clausa. The 5th abdominal sternum and the pygidium have a transverse row of stiff moderate setae, those of the 5th sternum a little longer than those of 24. Ataenius convexus Robinson the elytral fringe, those of the pygidium finer and Ataenius convexus Robinson, 1940:149. still longer. HOLOTYPE.—Male, USNM 53423. DESCRIPTION.—Holotype: Length 3.2 mm; width TYPE-LOCALITY.—St. Cloud, Florida. (Collected 1.5 mm. Dark red-brown, shining, convex, oblong- in Geomys burrow.) oval. Antennae testaceous. Head convex, clypeus SPECIMENS EXAMINED.—Six. rounded and slightly angulate but not distinctly DATES COLLECTED.—July 17 to September 12. dentate each side of deep median emargination, DISTRIBUTION (Figure 12).—Florida: Near Alli- sides weakly arcuate to right-angled genae, margin gator Lake (Osceola County), Juniper Springs very finely reflexed, arched upward at middle leav- (Marion County), Wiersdale (Marion County). ing a flat, closely, minutely punctate surface be- REMARKS.—This is one of the few species having tween the two edges; entire head surface smooth fimbriate elytral margins. Its small size, oval shape, except for very fine, uniformly distributed punc- NUMBER 154 43

FIGURE 12.—Distribution of Ataenius abditus Haldeman, A. desertus Horn, A. saramari Cartwright, and A. woodruffi, new species. •k abditus • desertus o saramari D woodruffi tures throughout, the punctures separated by about erately deep midline, disc smooth but with minute three times their diameters. Pronotum convex, the sculpture of scattered punctures and alutaceous side margins invisible from directly above, about surface, a few scattered, coarse, shallow punctures one-third wider than long, anterior angles obtuse, at sides, metasternal triangle deep and elongate. hind angles not widely rounded, sides and base Abdominal sterna smooth and shining but with strongly margined, very weakly crenate, marginal scattered, minute punctures at sides, fluted along setae conspicuous but moderate, generally sep- anterior margins as usual, the fluting of the 5th arated by about their own length; surface with sternum deep and at middle about half the length mixed coarse and fine punctures, coarse punctures of the sternum, the 5th sternum with a row of irregularly spaced, separated by less than their coarse, shallow, contiguous punctures bearing long, diameter to less than twice their diameter, lacking conspicuous hairs. Eroded area of pygidium strong- over anterior fourth at middle. Elytra convex, ly alutaceous and roughened by similar hair- oval, one-fourth longer than wide, humeri finely bearing coarse punctures. Anterior femora with dentate; striae fine, fine punctures weakly crenating perimarginal groove, smooth shiny surface. Middle the strongly convex intervals, intervals have a and hind femora similarly smooth but with two median row of minute punctures, lateral intervals moderate, setigerous punctures at knee, middle not different; lateral and apical elytral margins femora with a single, strong marginal seta at noticeably fimbriate, the setae about as long as middle, posterior femoral line absent. Posterior those of the pronotum but generally separated by tibial fringe of six setae, strong accessory spine twice their length. Mesosternum finely carinate and intervening seta between accessory spine and between the coxae. Metasternum with fine, mod- spurs. Hind tarsus shorter than tibia, first tarsal 44 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY segment slightly shorter than long spur, longer suddenly becoming longer opposite the scutellum, than following three segments combined. surface with evenly distributed, very fine punc- HOLOTYPE.—Robinson Collection, USNM 65614. tures mixed with less evenly distributed coarse TYPE-LOCALITY.—Hidalgo, Texas. punctures which are less numerous over central SPECIMENS EXAMINED.—Seven. disc then closer and more numerous halfway to DATES COLLECTED.—April 24 to August 16. sides. Elytra about 3.6 mm long by 2.3 mm wide, DISTRIBUTION (Figure 5).—Texas: Big Bend Na- humeri finely dentate, sides weakly arcuate; striae tional Park, Corpus Christi, Hidalgo, San Diego. fine, not deep, very fine strial punctures very REMARKS.—Two of the Corpus Christi specimens weakly crenating inner margins of the very mod- were collected by Charles W. Griffin in nests of erately convex intervals, striae much wider, deeper wood rats, probably Neotoma micropus micropus with much longer, deeper strial punctures over the Baird. Another was taken in an armadillo burrow. apical declivity, the intervals here more noticeably One of the Robinson paratypes of A. convexus, convex, intervals with minute, scattered punctures, with Texas state label only, from the collection lateral intervals not differing from the others. of Charles Schaeffer and labeled as new by him, Mesosternum shagreened with fine alutaceous is not A. convexus but a species very close to it sculpture and short, fine, appressed hair, weakly that is described in this paper as A. griffini, new carinate between the coxae. Metasternum every- species. The genitalia of the two species are differ- where smooth and shining, midline fine, shallow, ent. deeper at ends, disc and outward to sides minutely Ataenins convexus varies in length from 3.1 mm punctate, the punctures usually separated by three to 4.2 mm, with the larger specimens being from or four times their diameters, slightly roughened Big Bend National Park. The pygidium is longer at extreme sides. Abdominal sterna smooth and in the male than in the female. shining but with scattered, minute punctures from side to side, slightly larger and very shallow near sides, a few of them setigerous, the setae moderately 25. Ataenius lobatus Horn long and appressed, sterna fluted along anterior PLATE $b margin, deeper and one-third the length of the 5th sternum. Pygidium with smooth apical lip, Ataenius lobatus Horn, 1871:287. disc deeply eroded with rough, tuberculate, aluta- Ataenius laeviventris Horn, 1887:74.—Cartwright, 1951:29. ceous sculpture. Anterior femora with perimarginal DESCRIPTION.—Length 4.9 to 5.8 mm; width 2.2 groove, surface smooth, shining, with rather widely to 2.6 mm. Oblong-elongate, dark red-brown to scattered, very fine punctures. Middle and hind piceous, shining, moderately convex, antennae femora surface as in anterior femora but with light yellow. Head convex, clypeus rounded each three or four coarse setigerous punctures at the side of wide, moderately deep, median emargina- knee, the setae long and conspicuous, posterior tion, or in freshly emerged specimen the reflexed marginal lines about three-fourths the length of margin high and forming a low, wide, triangular the femora but not sharply defined and best seen angulation or tooth each side of emargination, from the rear. Posterior trochanters with two con- finely reflexed sides weakly arcuate to sharply spicuous setae. Posterior tibial apical fringe of five rounded right-angled genae; surface of anterior fine setae, a very strong accessory spine, and a half of clypeus transversely wrinkled, finely punc- single seta between accessory spine and the spurs; tate above greatest convexity, the punctures sep- long spur longer than first tarsal segment which arated by their diameters, frontal area with close, equals the length of the following three segments moderate-to-coarse punctures. Pronotum convex, combined. In the male the 4th abdominal sternum averaging about 2.0 mm wide by 1.5 mm long, all is shorter at middle, the 5th sternum is shorter, angles broadly rounded, strongly lobed basally, and the pygidium is longer than in the female. sides and base margined, crenate, fimbriate, the HOLOTYPE.—Academy of Natural Sciences of setae moderately long, separated by less than their Philadelphia, No. 3614. length, longest at anterior angles, very gradually TYPE-LOCALITY.—"Peninsula of Lower Cali- diminishing in length to near the basal lobe then fornia." NUMBER 154 45 SPECIMENS EXAMINED.—29. with two rows of widely spaced, minute punctures, DATES COLLECTED.—July 26 to October 4. the inside row high up on the shoulder or over DISTRIBUTION (Figure 13).—Arizona: Arlington, the middle of the convexity, the outside row about Catalina Mts. (Pima County), Fort Yuma, 36 mi the middle of the shoulder, extreme lateral interval E of Gila Bend, Hope, Marijilda Canyon (Graham flat and finely alutaceous. Mesosternum narrowly Mts.), Organ Pipe Cactus National Monument carinate between the coxae. Metasternum with (Pima County), Phoenix, Sabino Canyon, Tucson. strong, deep midline, disc with numerous moderate California: Blythe, Gila Bend, La Puerta (Imperial punctures generally separated by their diameters County), Maricopa County. Nevada: Las Vegas, 30 or two times their diameters, the punctures ex- mi NW of Logandale. Mexico: Baja California: tending outward to the wide, scabrous surface at Purissima, San Jose" del Cabo, Santa Rosa. sides, the scabrous area extending into the meta- REMARKS.—The color, size, distribution, and sternal triangle; abdominal sterna finely punctate especially the very strongly lobed pronotum dis- from side to side, the punctures generally separated tinguish A. lobatus Horn. by their diameters or two times their diameters, a little finer at middle; sterna fluted anteriorly as usual, the middle fluting of the 5th sternum about 26. Ataenius cylindrus Horn one-half its total length; pygidium longer in the Ataenius cylindrus Horn, 1871:289; 1875:142. male, the median area eroded as usual. Anterior Ataenius horni Harold, 1874a:19. femur with perimarginal groove, punctate and Ataenius cylindricus Schmidt, 1922:454. shining along anterior margin, remainder of sur- DESCRIPTION.—Length 3.3 to 4 mm; width 1.2 face scabrous. Middle and posterior femora punc- to 1.8 mm. Oblong, convex, black, moderately tate throughout, the punctures a little finer and shining. Head convex; clypeus sharply dentate each closer than on disc of metasternum, postfemoral side of moderately broad, moderately deep, tri- lines deep and entire. Posterior tibial fringe a angular emargination, sides weakly arcuate to group of seven or eight short, close setae, a short nearly right-angled genae, edge finely reflexed; accessory spine of same length, and an intervening surface concave behind emargination, elsewhere seta between the accessory spine and spurs. Long convex and finely, closely, evenly punctate; front spur, first posterior tarsal segment, and the three and occipital area densely, moderately punctate, following segments combined are about equal in the practically contiguous punctures twice the size length. of the clypeal punctures. Pronotum convex, the LECTOTYPE (present designation).—Academy of sides not completely visible viewed from directly Natural Sciences of Philadelphia, No. 3605. above, about one-fourth wider than long, anterior TYPE-LOCALITY.—Florida. Original description angles obtusely rounded, posterior angles slightly also mentions South Carolina and Georgia. emarginate, sides and base margined, posterior SPECIMENS EXAMINED.—450+ . angles and base distinctly crenate-fimbriate, the DATES COLLECTED.—January 28 to November 6. setae separated by more than their length, those DISTRIBUTION (Figure 14).—Alabama: Auburn, of the sides anteriorly extremely short and incon- near Helena, Mobile, Monroeville, Montgomery, spicuous, surface densely, shallowly, moderately Selma, Spring Hill, Storrsland. District of Colum- punctate throughout, the punctures minutely bia. Florida: Alachua County, Archbold Biological setigerous and general surface minutely alutaceous Station (Lake Placid), Buck Key, Capron, Center- under high magnification, punctures gradually a ville, Clewiston, Crescent City, Dunedin, Dunnel- little finer anteriorly at middle. Elytra elongate- lon, Enterprise, Fort Lauderdale, Fort Myers, Fort oval, humeri dentate, one-third longer than wide, Ogden, Gainesville, Goldhead, Haw Creek, High- margin without noticeable setae; elytral striae lands Hammock State Park, Jacksonville, Jungle wide, deep, rather coarsely punctate, the punctures Road (Taylor County), Jupiter, Kissimmee, Kori- slightly crenating the inner side of the intervals, shan State Park, La Belle, Lacooche, Lake Harney, intervals usually subcarinately convex with a mi- Lake Letta, Lake Wales, Levy County, Marion nutely alutaceous, more or less distinct shoulder County, Mclntosh, Miami, Moore Haven, Myakka each side of the middle convexity, each interval River State Park, Ocala, Oneco (Manatee County), 46 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 13 Distribution of Ataenius lobatus Horn, A. languidus Schmidt, A, glaseri, new species, and A. robustus Horn, o lobatus O languidus • glaseri it robustus

Pablo Beach, Palatka, Pensacola, Punta Gorda, Pond, Williamsburg County, Yemassee, York Coun- Sanford, Sarasota, Tallahassee, Tampa, Winter ty (Route 91 at Chester County line). Tennessee: Park. Georgia: Beach ton, Demarest, Hazelhurst, "Tennessee." Texas: Willis. Virginia: Accomac, Hinesville, Milner, Nashville, Okefenokee Swamp, Arlington, Camp Picket, Chatham, Fort Monroe, Pine Mt., Prattsburg, Tifton, Ware County (S. L. Nelson County, Virginia Beach. Walker State Park), Waycross. Kentucky: Wolf REMARKS.—Occasionally the elytral intervals do Creek Lake (Wayne County). Louisiana: Covington. not show the flattened shoulders and the intervals Mainland: "Maryland," Pocomoke Swamp. Af«- appear evenly convex. In such cases the sharply sissippi: Camp Shelby, George County, Gulfport, dentate clypeus with the concave surface behind Horn Island. New Jersey: Martha. North Carolina: the emargination, the emarginate posterior angles, Carthage, Southern Pines, Swan Quarter, Tryon. and the close even punctation of the pronotum Pennsylvania: "Pennsylvania." South Carolina: together with locality data should suffice for ac- Beaufort, Berkeley County, Blackville, Blaney, curate determination. Cameron, Cayce, Charleston, Clemson, Colleton I have frequently taken this species under quite County, Columbia, Congaree, Edisto Island, Flor- old cow dung. It is not usually found under fresh ence, Folly Beach, Georgetown County, Hampton, dung but seems to prefer the ground surface under Ton Swamp, Lugoff, Marion, Moncks Corner, dung almost completely dry. It has been collected Mount Pleasant, Oconee CCC Camp, Orangeburg, in every month except December. The earliest Pelion, Pontiac, Pritchardville, Ritter, Seabrooks record is 28 January at Miami and the latest is Island, Summerville, Sumter, Walterboro, White 6 November in Oconee County, South Carolina. NUMBER 154 47

FIGURE 14.—Distribution of Ataenius cognatus (LeConte) and A. cylindrus Horn. •*• cognatus • cylindrus

27. Ataenius oklahomensis Brown tions and setae most conspicuous at posterior angles; surface with mixed very fine and moder- Ataenius oklahomensis Brown, 1930:4. ately coarse punctures, coarse punctures a little DESCRIPTION.—Length 3.5 to 4.4 mm; width 1.6 smaller, scattered and not as close over middle of to 1.8 mm. Oblong, subparallel, convex, shining, anterior disc, coarser and much closer, practically black, sometimes anterior of clypeus and legs red- contiguous beginning midway and outward to dish. Head convex, clypeus with small, sharp, tri- sides. Elytra convex, 2.3 to 2.8 mm in length and angular tooth each side of moderately deep emar- 1.6 to 1.8 mm in width, sides arcuate, striae mod- gination, sides narrowly reflexed, slightly arcuate erate, strial punctures deep, separated by three or to nearly right-angled genae; surface strongly shin- four times their diameter, crenating inner margins ing, narrowly, transversely wrinkled and concave of weakly to moderately convex intervals, disc with behind median emargination; smooth, minutely, a row of minute punctures along each side of the closely punctate over convex disc, then gradually interval, the striae become wider, the intervals finely, closely punctate, separated by their diameter strongly convex and eroded each side (over the or less, to base of clypeus; punctures still larger apical declivity), the humeri peculiarly doubly but moderate across frontal-basal area of head. dentate with a strong, noticeable tooth at basal Pronotum convex, averaging about 1.2 mm long end of the 7th intervals. Mesosternum shagreened by 1.7 mm wide, anterior angles obtusely rounded, as usual with very fine, alutaceous sculpture and sides nearly straight, posterior angles slightly ex- very fine, short, appressed hair; strongly carinate cised, base arcuate, sides and base margined, between the coxae. Metasternum shining, midline crenate-fimbriate, the setae very short, the crena- strong and deep, disc and part way to sides with 48 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY close punctures variable in size from fine to coarse, eus and legs usually reddish brown. Head convex, roughly scabrous at sides, deep, well-defined meta- clypeus with small, sharp, triangular tooth each sternal triangle finely alutaceous.. First visible ab- side of a wide, moderate, median emargination, dominal sternum with a deep posterior marginal margin very finely reflexed, sides arcuate to sharply line, remaining four visible sterna fluted along rounded, right-angled genae; surface slightly anterior margin, the fluting gradually longer on wrinkled, narrowly concave behind median emar- each segment with flutings of 5th sternum half gination, apparently smooth but actually minutely as long as the sternum, all sterna closely, moder- punctate, more noticeably so toward sides where ately punctate between scabrous areas at sides, they are very fine and separated generally by their pygidium convex at apex, gradually concave at own diameters; punctures of frontal-occipital area base, the surface rough and alutaceous, apical lip gradually minute to very moderate, separated by very narrow and inconspicuous. Anterior femora their own diameters or less. Pronotum convex, with perimarginal groove, surface rough except averaging about 1.5 mm wide by 1.1 mm long, for small, smooth spaces in inner anterior angle. sides and base margined, very finely fimbriate- Middle femora closely, finely punctate, two or crenate, setae fine, short, inconspicuous, crenations three larger setigerous punctures at knee, a com- noticeable at slightly emarginate hind angles, base plete, strong posterior marginal line. Posterior evenly arcuate, anterior angles obtusely rounded; femora with finer, more scattered punctures, two surface with mixed minute and moderately coarse or three coarser punctures at base, strong, com- punctures, discal coarse punctures irregularly plete posterior marginal line. Posterior apical tibial spaced from less than one to four or more diam- fringe of six short setae, a strong accessory spine eters, close to dense over outer third, the coarse with an intervening seta between spine and spurs. punctures in area of lateral fovea variable in size, First posterior tarsal segment one-fifth longer than some twice the size of others. Elytra convex, ovate, the long spur and about same length longer than averaging about 1.6 mm wide by 2.3 mm long, sides the following three segments combined. Males with arcuate, 7th interval with distinct tooth basally, 4th abdominal sternum much shorter at middle making the humeri doubly dentate, elytral striae and the pygidium relatively longer than in the moderately wide and deep, deep punctures sep- female. arated by four or five times their diameter, crenat- HOLOTYPE.—Canadian National Collection, No. ing inner margins of the moderately convex 3038. intervals, lateral intervals 7, 8, and 9 subcarinately TYPE-LOCALITY.—Payne County, Oklahoma. convex, 10th flat and alutaceous, over apical fourth or less the interval becomes strongly convex to SPECIMENS EXAMINED.—Eleven. DATES COLLECTED.—September 5 to October 20. subcarinate, sometimes slightly eroded each side, DISTRIBUTION (Figure 6).—Arkansas: Washing- intervals with some very minute punctures under ton County. Oklahoma: Cleveland County, Man- high magnification. Mesosternum shagreened with gum, Payne County, Willis. Texas: Harrisburg. fine, alutaceous sculpture and fine, short, decum- REMARKS.—The doubly dentate humeri are un- bent setae, sharply carinate between coxae. Meta- usual in this uncommon species. See remarks fol- sternum shining, midline deep, disc and halfway lowing A. ovatulus Horn. to sides with scattered, mixed fine to moderately coarse punctures, generally separated by one diam- eter or less, a fine, eroded curving line close around 28. Ataenius ovatulus Horn middle coxae, sides and metasternal triangle rough- ly scabriculate-alutaceous. Abdominal sterna fre- Ataenius ovatulus Horn, 1871:286; 1875:142, 1887:78— Schmidt, 1922:431. quently transversely convex, first visible sternum Ataenius lecontei Harold, 1874a:2O—Horn, 1875:142.— with posterior marginal line, remaining four sterna Schmidt, 1922:447.—Robinson, 1948:177. fluted along anterior margin, the fluting progres- Ataenius cylindrus Horn, 1875:142 [not Horn, 1871:289]. sively longer posteriorly, those of 5th sternum half DESCRIPTION.—Length 3.0 to 4.0 mm; width 1.4 the total length, sterna quite closely punctate from side to side, punctures separated generally by one to 1.7 mm. Elongate-oval, convex, shining, dark or two times their diameters, very moderate in reddish brown to piceous, anterior margin of clyp- NUMBER 154 49 size over anterior sterna and finer posteriorly, a County, Yemassee. Tennessee: Athens (McMinn little scabrous sculpture at extreme sides. Pygidium County). Texas: Avery, Dallas. Virginia: Belvoir with narrow, smooth apical lip, disc scabrous. (Fauquier County), Falls Church, Fort Monroe, Anterior femora with perimarginal groove, nar- Norfolk. rowly smooth anteriorly, disc finely scabrous. REMARKS.—Ataenius ovatulus Horn and A. okla- Middle femora finely punctate near trochanter, homensis Brown are very closely related. In A. gradually coarser, finely, minutely setigerous and oklahomensis the pronotum is densely, uniformly closer outward, two or three longer setae at knee, punctate over the outer third and the posterior posterior marginal line strong and complete. Hind angles of the pronotum are distinctly excised or femora with scattered, fine punctures, three or emarginate with the base slightly sinuate; the four coarse setigerous punctures at knee, posterior elytral intervals are strongly convex to subcarinate marginal line deep and entire. Posterior tibial over the posterior third, with the sides of the in- fringe of six or seven short, close setae, a short tervals here noticeably eroded and alutaceous. accessory spine and an intervening seta between Ataenius ovatulus is closely but not densely, not the spine and spurs. First posterior tarsal segment uniformly punctate over outer third, the posterior about one-fifth longer than the long spur, follow- angles of the pronotum weakly or not excised, ing three segments combined shorter than the long base not sinuate or very inconspicuouly so; elytral spur. Males have 4th abdominal sternum greatly intervals convex over apical fourth or less, not shortened at middle to half the length of the pre- noticeably eroded or alutaceous though sometimes ceding sternum, pygidium comparatively longer slightly so. Both species have doubly dentate than in female. humeri. LECTOTYPE (present designation).—Type No. Ataenius ovatulus is rarely if ever attracted to 3611 in Horn Collection, Philadelphia Academy lights. Jerath (1960:74) described the larva. of Natural Sciences. I have examined the holotype of Ataenius lecon- TYPE-LOCALITY.—Louisiana. tei Harold now in the Germar collection in the SPECIMENS EXAMINED.—260+. Museum fur Naturkunde, Berlin, Deutsche Demo- DATES COLLECTED.—January 18 to October 2. kratische Republik. It is labeled "Carolina, Zim- DISTRIBUTION (Figure 11).—Alabama: Chickasaw, mermann." Many of Zimmerman's specimens were Langdale. Arkansas: "Arkansas." District of Co- collected near Charleston, South Carolina. lumbia. Florida: Crescent City, Gainesville, High- lands, Jacksonville, Sopchoppy (Wachula County), 29. Ataenius desertus Horn Tall Timbers Research Station, Wilcox (Gilchrist County). Georgia: Athens, Atlanta, Currahee Mtn., Ataenius desertus Horn, 1871:289; 1887:72. Schmidt, 1922: 453. Jekyll Island, Milner. Illinois: Grant City State Park, Herod. Kentucky: Natural Bridge. Louisiana: DESCRIPTION.—Length 3.3 to 4.7 mm; width 1.5 New Iberia. Maryland: Anne Arundel County (S. to 2 mm. Oblong, castaneous, shining. Head strong- I. Java Farm), Flag Pond (3 mi S Kenwood Beach), ly convex; clypeus with strong, sharp, triangular Piney Point, Plummers Island, Takoma Park. teeth each side of moderately deep, median, an- Mississippi: Starkeville, Vicksburg. North Carolina: terior emargination, sides arcuate to nearly right- Highlands, Pisgah Forest, Raleigh, Southern Pines. angled genae, edge finely reflexed; surface South Carolina: Aiken, Allendale County, Ander- transversely granulate-rugose, front and occipital son County, Bishopville, Blaney, Brook Green, area with close punctures of very moderate size Bulls Island, Cayce, Charleston, Chester, Clemson, separated generally by about their own diameters. Columbia, Combahee River (Beaufort County), Pronotum convex, one-third wider than long, an- Edgefield, Fairfax, Florence, Green Pond, Green- terior angles obtuse, posterior angles broadly, ville, Hartsville, Jenkinsville, Kline, Liberty, Ma- evenly rounded from middle of sides, strongly rion, North Augusta, Pickens County, Pinnacle margined laterally and basally, fimbriate, crenate, Mtn., River Falls, St. Andrews Church, St. Mat- the setae moderate in length, separated by their thews, Saluda County, Sandy Springs, Sassafras own length or less; surface with mixed coarse and Mtn., Six Mile, Summerville, Tigerville, Union fine punctures throughout, the coarse punctures 50 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY shallow, numerous, irregularly spaced from con- Ajo (15 mi S), Benson, Bisbee, Brown Canyon tiguous to four times their diameter, a little less (Baboquivari Mts.), Buckeye, Chiricahua Mts., numerous at middle and a little smaller anteriorly. Coconino County, Colossal Cave Park, Cutter Elytra convex, elongate-oval, about one-third longer (Gila County), Douglas, Florence, Florida Can- than wide, humeri finely dentate; elytral striae yon (Santa Rita Mts.), Fort Grant, Gila Bend, fine, moderately deep, strial punctures fine, sep- Globe, Hope, Kits Peak Rincon (Baboquivari arated by four or five times their diameters, weakly Mts.), Liberty, Madera Canyon (Santa Rita Mts.), crenating the moderately convex intervals, inter- Mesa (19 mi NE), Nogales, Oracle, Organ Pipe vals with scattered, very fine punctures generally Cactus Monument, Phoenix, Portal, Rimrock, separated by four times their diameters, lateral Roosevelt Lake, Sabino Canyon (Catalina Mts.), intervals not noticeably different. Mesosternum Sacaton, Safford, Temple, Tucson, Wickenberg with a broad, low carina between the coxae. Meta- (Maricopa County), Wilcox. California: Banneu sternum with fine midline gradually deeper and (San Diego County), Berkeley, Blythe, Desert Center, wider at anterior end, disc very finely punctate, Elsinore, Glamis (Imperial County), Ripley. Kan- the punctures evenly distributed, separated by four sas: "Kansas." New Mexico: Deming, Granite Pass, times their diameters, a few vague indistinct mod- Hidalgo County, Las Cruces, Lordsburg, Magda- erate punctures at sides, metasternal triangle lena, Rodeo (18 mi NE). Nevada: Logandale, Mer- smooth, shallow, not sharply defined. Abdominal cury, Mesquite. Texas: Big Bend National Park, sterna with very shallow, indistinct, moderate Brewster County, Dallas, El Paso, Lajitas, Pecos punctures from side to side, those at sides bearing (Reeves County). Utah: St. George. very fine, semierect hairs, somewhat reminiscent REMARKS.—The dark red color, sharp, noticeable of abdominal hairs of Ataenius languidus Harold clypeal teeth, mixed very coarse and fine pronotal but more numerous and less regularly placed, punctures, lack of posterior marginal line on the sterna finely fluted along anterior margin and anterior femora, anteriorly deepened midline of fluting gradually longer on successive segments, the metasternum, and semierect hairs at sides of flutings of 5th sternum deeper and half as long the abdominal sterna distinguish Ataenius desertus as the sternum. Pygidium eroded as usual, the Horn. apical lip shining, with a transverse row of ten or more fine setigerous punctures, the setae or 30. Ataenius languidus Schmidt hairs very fine and longer than the length of the lip at middle. Anterior femur lacking posterior Ataenius languidus Schmidt, 1910:31. marginal line, surface convex, shining, smooth, Ataenius linelli Cartwright, 1944:28. [New synonymy.] but in some light with a few scattered, extremely DESCRIPTION.—Length 4.1 to 4.5 mm; width 1.8 fine, short hairs. Middle and hind femora smooth to 2.0 mm. Oblong, moderately elongate, convex, and shining, usually without or with only a very shining, dark reddish brown to piceous, legs usually short trace of postfemoral line at knee, three stout reddish, antennae pale yellow. Head moderately bristles at knee. Posterior tibial fringe with a group convex, clypeus finely dentate each side of broad, of four to six well-separated setae, a very short, moderate median emargination, sides weakly triangular accessory spine and one intervening seta arcuate to obtusely rounded genae, edge finely re- between accessory spine and the spurs; first tarsal flexed; surface transversely wrinkled anteriorly, segment slightly shorter than the long spur and above greatest convexity sparsely, very finely punc- shorter than following three segments combined. tate, the punctures generally separated by about TYPE.—Academy of Natural Sciences of Phila- four times their diameters, punctures slightly delphia, No. 3606. larger in occipital area. Pronotum convex shining, TYPE-LOCALITY.—"Not rare in the desert re- averaging about 1.7 mm wide by 1.2 mm long, gions around and to the eastward of Fort Yuma, all angles obtusely rounded, sides weakly arcuate, California." sides and base strongly margined, marginal setae SPECIMENS EXAMINED.—300. moderately long, separated by less than their DATES COLLECTED.—April 25 to August 24. length, shorter around basal margin; surface with DISTRIBUTION (Figure 12).—Arizona: Agua Fria, mixed coarse and very fine punctures, the fine NUMBER 154 51 punctures quite close and evenly distributed, the Knights Key (Monroe County), Lake Wales, Lake coarse punctures very irregularly distributed, gen- Worth, Miami, West Palm Beach. Texas: "Texas." erally rather widely separated on disc and closer REMARKS.—I also have seen this species from the laterally where they are separated by their diameter Bahama Islands, West Indies, and Mexico. The or more. Elytra convex, averaging about 2.7 mm conspicuous lateral rows of abdominal setae dis- long by 1.9 mm wide, sides slightly arcuate, humeri tinguish it from most other species. finely dentate, striae moderately deep, strial punc- tures crenating inner sides of moderately convex intervals, the latter with scattered, minute punc- 31. Ataenius barberi, new species tures, striae a little wider and intervals more con- DESCRIPTION.—Holotype: Length 4.0 mm; width vex over apical declivity, lateral intervals not 1.7 mm. Elongate, subparallel, black, the elytra noticeably different. Mesosternum shagreened with with slight reddish tinge, anterior margins of clyp- very fine, alutaceous sculpture and decumbent hair, eus and pronotum and legs reddish; feebly shin- very weakly carinate between the coxae. Meta- ing, the elytra alutaceous, only moderately convex. sternum shining, midline strong, long, deeper at Head moderately convex; clypeal margin very finely each end, disc very smooth but with some extremely reflexed, sharply dentate each side of wide, shallow minute punctures, occasionally with a few fine median emargination, sides arcuate to obtusely punctures also, a small rugose area at extreme rounded genae; depressed anterior area behind sides, the metasternal triangle moderately deep but emargination wrinkled and more shining than re- not sharply defined. Abdominal sterna fluted along mainder of head which is densely, moderately anterior margin, smooth at middle, a transverse punctate; clypeal punctures slightly finer anterior- row of three or four well-separated, coarse, shallow ly, tending laterally to become elongate, twice as setigerous punctures outward at sides, the setae wide as long but not forming lines as in A. gracilis, long, fine, conspicuous, recumbent on first two the punctures of the frontal and basal areas are sterna, semierect on last two. Pygidium finely but round and very dense across the base, practically roughly eroded over disc with up to eight or ten touching but remaining distinct. Pronotum 1.6 mm scattered, fine, moderate setae. Anterior femora wide by 1.0 mm long, sides weakly arcuate an- with perimarginal grooves, surface smooth, shin- teriorly, slightly sinuate at the broadly rounded ing, minutely punctulate. Middle and hind femora posterior angles; sides and base finely margined, similar but with three or four coarse setigerous edge minutely crenate, anteriorly becoming in- punctures at knee; middle femora with well-defined creasingly and distinctly so posteriorly with an posterior marginal groove half the length of the extremely fine, short seta between the crenations femur, the posterior femora identical except that under high magnification; surface everywhere the line or groove is indefinitely continued over densely, evenly, moderately punctate, the punctures the other half. Posterior tibial fringe with four slightly finer at extreme anterior margin and no- or five setae, an accessory spine of about equal ticeably shallower at sides, median longitudinal length, and in intervening seta between the spine line very vaguely indicated. Scutellum normal. and the spurs. First posterior tarsal segment slight- Elytra 2.7 mm long by 1.7 mm wide, humeri ly shorter than the long spur, equal to following strongly dentate, striae shining, deep, crenate three segments combined. In the males the penulti- punctate; intervals subangularly, moderately con- mate sternum is comparatively shorter at the vex, the ridge at outer third with a row of very middle, the terminal also shorter, and the py- fine punctures, separated by about four times their gidium relatively longer than in the female. diameters, and more or less masked by fine aluta- HOLOTYPE.—In Riksmuseum, Stockholm. ceous sculpture throughout; sutural interval with TYPE-LOCALITY.—"S. Madre de Durango, Mex- row of close, very fine punctures, tenth interval ico." much flatter than others; under high magnifica- SPECIMENS EXAMINED.—500+. tion the punctures of the intervals over the apical DATES COLLECTED.—May to July 13. declivity become setigerous, showing median rows DISTRIBUTION (Figure 13).—Alabama: "Ala- of very fine, very short setae; the striae are some- bama." Florida: Coconut Grove, Dade County, what wider apically also. Mesosternum carinate 52 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY between the coxae. Metasternum shining, midline and labeled it "n. sp." Paratypes will be deposited long, strong; discal area evenly, closely, rather in the collection of the California Academy of coarsely punctate, separated by about their diam- Sciences. eter, finely scabriculate outward to sides, meta- sternal triangle large, well denned, scabriculate. Abdominal sterna finely fluted in front, suture 32. Ataenius puncticollis (LeConte) between very deep and not longer at middle but Euparia puncticollis LeConte, 1858:66. equally wide from side to side; punctate through- Ataenius puncticollis.—Harold, in Gemminger and Harold, out as on disc of metasternum but 4th and 5th 1869:1067.—Horn, 1887:77.—Schmidt, 1922:434.—Cart- sterna slightly shallower and minutely setigerous; wright. 1951:29. pygidium finely scabrous. Profemur with perimar- Ataenius inops Horn. 1887:72 Schmidt, 1922:449.—Cart- ginal groove, surface scabrous with close, coarse, wright, 1951:29. shallow, finely setigerous punctures and alutaceous DESCRIPTION.—Length 3.1 to 4.2 mm; width 1.2 sculpture. Punctures of mesofemora and meta- to 1.7 mm. Oblong, subparallel, moderately convex, femora as on metasternum. Postfemoral line of shining, dark red-brown, sometimes pronotum and middle femur complete, strong, deep, and aluta- head darker. Head convex, edge finely reflexed, ceous. Postfemoral line of hind femur over one- clypeus sharply, triangularly dentate each side of fourth distance from knee. Posterior tibial fringe moderately deep median emargination, sides weak- of eight close, short setae; without accessory ly arcuate, right-angled genae sharply rounded; spine. First segment of posterior tarsus one-fourth clypeal surface strongly, coarsely, transversely longer than long spur and longer than following wrinkled, a few close, minute punctures at base, three segments combined. Hind tarsus shorter than frontal and occipital area closely, very finely punc- tibia. tate. Pronotum convex, two-thirds as long as wide, HOLOTYPE.—USNM 71741. anterior angles obtusely rounded, posterior angles TYPE-LOCALITY.—Arizona, Bright Angel, Colo- broadly rounded, base slightly sinuate before mid- rado Canyon, 3500 ft, 13 July 1901, H. S. Barber. dle, sides and base margined, very minutely crenate- SPECIMENS EXAMINED.—Seventeen. fimbriate; surface closely, evenly, very moderately DATES COLLECTED.—July 13-16. punctate throughout, punctures usually separated DISTRIBUTION (Figure 9).—Para types. Arizona by their diameters on disc, smaller and closer along (13): Colorado Canyon, 13 July, H. S. Barber anterior margin. Elytra convex, about seven-tenths and E. A. Schwarz. Texas (3): Chisos Mountains, as wide as long, humeri very finely, inconspicuously 16 July, J. W. Green. dentate; striae fine, deep, strial punctures fine, REMARKS.—The specimens vary from 2.5 to 4.1 crenating inner margins of nearly flat intervals, a mm in length. Some show the punctures of the row of close, very fine punctures along outside mar- metasternal disc gradually smaller posteriorly, and gin. Mesosternum shagreened with fine, alutaceous in some the femoral punctures are a trifle smaller sculpture and very fine, short, appressed hair, than those of the metasternum, otherwise no differ- carinate between the coxae. Metasternum smooth, ences were observed. shining, disc with scattered, very minute punc- Ataenius barberi is reminiscent of A. abditus, tures, midline fine, moderately deep, lateral scab- A. texanus, and A. scalptifrons Bates (1887:100); rous area at sides extending inward almost to disc however, it differs from the first two by the elon- where it breaks up into fine punctures close to gate clypeal punctures and in being broader, less middle coxae, metasternal triangle slightly rough- convex, and much more noticeably alutaceous. It ened in anterior angle. First visible abdominal is much closer to A. scalptifrons, but that species, sternum with posterior marginal line, remaining in average, is smaller in size, is more convex, and four sterna finely fluted along anterior margin, has much more noticeably ridged intervals. surface very moderately punctate from side to side, The species is named after the late H. S. Barber, finer at middle, coarser toward sides where the one of the best field collectors and keenest ob- punctures are generally separated by their diameter servers I have ever known. E. A. Schwarz had or less, finer and closer on 5th sternum. Pygidium recognized this beetle as an undescribed species very finely punctate and convex at apex, concave NUMBER 154 53 and eroded basally. Anterior femora with peri- Victoria, Weslaco. marginal groove, surface shining, some scattered, REMARKS.—Among United States species, Atae- very minute punctures. Middle femora smooth, nius puncticollis is recognized by the clypeal teeth, shining, posterior marginal line at knee a little transverse coarse wrinkles covering practically the less than half femur length. Posterior femora simi- entire clypeus, close, evenly spaced, moderate pro- lar but with a very short line at knee. Posterior notal punctures, and the first segment of the short apical tibial fringe of eight short, close setae, posterior tarsus being much thicker apically than without accessory spine. First posterior tarsal seg- at base. The holotype, badly worn and without ment short, enlarged apically and narrowed basally, clypeal teeth, for many years was thought to be about three-fourths as long as long spur, a trifle distinct from A. inops Horn which has distinct shorter than following three segments combined. clypeal teeth. Comparison of the two showed them The males have the 4th sternum slightly shorter to be the same species. at middle and the pygidium comparatively longer than in the female. 33. Ataenius nunenmacheri, new species HOLOTYPE.—Museum of Comparative Zoology, No. 3731. (Type of A. inops Horn in Academy of DESCRIPTION.—Holotype Male: Length 3.2 mm; Sciences of Philadelphia, No. 3607.) width 1.3 mm. Elongate, parallel, slender, dark TYPE-LOCALITY.—El Paso, Texas. (A. inops, red-brown, shining, very moderately convex. Head Horn, "Arizona." moderately convex; clypeal margin very finely re- SPECIMENS EXAMINED.—456 + . flexed, a small, sharp triangular tooth each side DATES COLLECTED.—January 25 to November 8. of a moderate, angulate, median emargination, DISTRIBUTION (Figure 7).—Arizona: Arivaca, sides weakly arcuate to right-angled genae; anterior Blake Dike Project (Sierrita Mts.), Browns Can- third of clypeus transversely rugose, the rugae yon (Baboquivari Mts.), Carr Canyon (Huachuca short, broken, and more or less tuberculate, re- Mts.), Chiricahua Mts., Clifton, Cochise Strong- mainder of head closely, finely, evenly punctate, hold (Dragoon Mts.), Colossal Cave Park, Conti- the punctures separated by less than their diam- nental (Pima County), Douglas, Florence, Fort eters. Pronotum quadrate, 1.2 mm wide by 0.9 Grant, Fort Yuma, Gila Bend (Maricopa County), mm long, anterior angles obtusely rounded, sides Globe, Guadelupe Canyon (Cochise County), Hot straight over anterior three-fifths then arcuate to Springs, Kits Peak Rincon (Baboquivari Mts.), posterior angles, sides and base finely margined, Madera Canyon, Marjilda Canyon (Graham Mt.), very minutely fimbriate-crenate, evenly, densely, Mesa (19 mi NE, Maricopa County), Nogales, finely punctate throughout, punctures generally Noon Creek Mt. (Graham County), Oracle, Organ separated by their diameter, shallow, larger and Pipe Cactus National Monument (Pima County), running together in the anterior angles, a trifle Pajarita Mts., Palmerlee (Cochise County), Pata- smaller anteriorly, vaguely impressed midline. gonia Mts., Pena Blanca, Piney Canyon (Chirica- Elytra 2.1 mm long and 1.3 mm wide, humeri very hua Mts.), Portal (Southwest Research Station), finely dentate, striae moderately deep, strial punc- Rimrock, Robles Ranch (20 mi SW of Tucson), tures slightly crenating sides of very weakly con- Sabino Canyon (Catalina Mts., Pima County), St. vex intervals, outside margin of intervals with a Johns (Apache County), Santa Cruz County, Santa row of fine punctures, slightly more noticeable Rita Mts., Santa Rosa Mts., San Xavier (near Tuc- on lateral intervals, the punctures of intervals 6, son), Sycamore Canyon (Santa Cruz County), 7, and 8 separated by their diameter or less, 10th Texas Pass, Tucson, Wickenberg, Wilcox, Wil- interval flatter than 9th, intervals slightly more liams. California: Napa County. Colorado: Rocky convex over apical declivity. Mesosternum sha- Ford. Indiana: Marion County. New Mexico: Las greened as usual, a strong, broad-based, elongate- Cruces, Lordsburg, Mesilla Park, Rodeo (18 mi triangular carina between the coxae. Metasternum N). Texas: Alpine, Austin, Big Bend National shining, midline unusually long, strong and deep, Park, Cypress Mills, Davis Mts., Del Rio, El Paso, disc and halfway to sides with fine and very mod- Enchanted Rock, Fort Davis, Lajitas, Laredo, erate mixed punctures, finer posteriorly, scabrous Round Mts., Sanderson, Stockley, Terlingua Creek, at sides, metasternal triangle small, deep, rough- 54 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY ened within. First visible abdominal sternum with type-series were received many years ago. strong posterior marginal line, remaining sterna finely fluted along anterior margin, those of the 34. Ataenius stroheckeri, new species 5th sternum longer over middle half of total width of segment, the fluting of this section about equal DESCRIPTION.—Holotype Male: Length 3.2 mm; in length so that anterior and posterior borders width 1.3 mm. Elongate, parallel, narrow, shining, are approximately parallel, surface of middle three moderately convex, black, clypeal margin and legs visible sterna otherwise closely, moderately punc- with reddish tinge. Head moderately convex, very tate, a little closer and larger at extreme sides; finely reflexed clypeal margin sharply, triangularly punctures of 5th sternum closer and smaller; py- dentate each side of wide, shallow median emargi- gidium with fine apical margin, roughened disc nation, sides weakly arcuate to rounded slightly convex apically, concave basally, slightly more than more than right-angled genae; clypeus transversely one-fifth as long as wide. Anterior femora with wrinkled over anterior half, closely, minutely punc- perimarginal groove, surface with about 30 scat- tate at middle, gradually very slightly larger lat- tered, fine to moderately coarse punctures, the erally and basally, very gradually still larger and coarse punctures on outer posterior surface. Middle closer over frontal area to base, forming a denser and hind femora shining, with scattered fine punc- transverse band of fine or very moderate punc- tures; middle femur with posterior marginal line tures, extreme occiput less densely punctate. Pro- along outer third of total length, posterior femur notum quadrate, width 1.2 mm, length 0.9 mm, with barely a trace of marginal line at knee. Pos- the sides diverging very slightly from base to terior tibial apical fringe of seven short setae, obtusely rounded anterior angles, in lateral view without accessory spine. First posterior tarsal seg- the sides are very evenly arcuate, sides and base ment subequal to long spur and following three finely margined, minutely fimbriate, crenate under segments combined. moderate magnification; surface densely, evenly, Allotype Female: Length 3.2 mm; width 1.3 mm. very moderately punctate throughout, the punc- The only noticeable difference from the male is tures a trifle finer anteriorly. Elytra 2.0 mm long the shorter pygidium, the length being about one- and 1.3 mm wide, humeri very finely dentate, striae fourth the width. fine, deep, strial punctures slightly crenating inner HOLOTYPE.—USNM 71742. sides of the rather strongly convex intervals, out- TYPE-LOCALITY.—Arizona. side margin of intervals with a row of closely SPECIMENS EXAMINED.—Sixteen. spaced punctures which become larger on the lat- DATES COLLECTED.—November. eral intervals where their diameter nearly equals DISTRIBUTION (Figure 15).—Paratypes. Holo- the width of the striae and giving the last three type, allotype, and two paratypes bear identical intervals a rough surface, the punctures along the labels: "Arizona, A. Koebele, 18 November 1907." outside margins of intervals 7 and 8 separated by In addition to the type series I have seen speci- their diameter or less, over the apical declivity mens from Mexico: 10 mi N of Culiacan, Sinaloa; the striae become wider and the intervals more 20 mi W of Compostila; and 2 mi E of Concordia, convex. Mesosternum shagreened as usual, strongly Sinaloa. carinate between the coxae. Metasternum shining, REMARKS.—Ataenius nunenmacheri is probably midline long, strong, and deep, a few fine punc- more closely similar to A. stroheckeri than any tures anteriorly, gradually becoming minute pos- other species but it is more slender than A. stro- teriorly, scabrous outward from disc to sides, heckeri, has uniform punctures over upper clypeus metasternal triangle deep with a little alutaceous and front, the intervals are not as convex, the sculpture in anterior angle. First visible abdominal lateral intervals are not as coarsely or roughly sternum with posterior marginal line. Remaining punctate, the sides of the pronotum are less evenly sterna fluted along anterior margin. Suture be- arcuate, and the fluting of the 5th abdominal tween 4th and 5th sterna deep, the fluting nearly sternum is longer over the middle half. half the length of the 5th sternum at middle but The species is named in honor of F. W. Nunen- not especially long at middle. Fourth sternum at macher, from whom the four specimens in the middle about two-thirds as long as the preceding NUMBER 154 55

FIGURE 15—Distribution of Ataenius spretulus (Haldeman) and A. nunenmacheri, new species. • spretulus it nunenmacheri sternum, 5th sternum including fluting about same TYPE-LOCALITY.—Dade County, Florida, June length. All sterna closely, moderately punctate 1948, Strohecker. everywhere except for small area of scabrous sculp- SPECIMENS EXAMINED.—23. ture at extreme sides. Pygidium about one-third DATES COLLECTED.—May and June. as long as wide, with very narrow, shining apical DISTRIBUTION (Figure 8).—Paratypes. Florida rim, disc roughly scabrous-alutaceous. Anterior (22): Biscayne Bay (7), no other data. "Dade femora with strong perimarginal groove, surface County" (8): June 1948 (6, includes allotype), posteriorly with eight to ten coarse, shallow punc- September 1949 (2), Strohecker. Miami, Dade tures. Middle and hind femora shining, scattered, County (6): 18 May, June 1948, Strohecker. Oneco, fine punctures, weak, posterior femoral line of Manatee County (1), no date, Paula Dillman. middle femora extending about one-third distance REMARKS.—The 21 paratypes vary from 3.0 to from knee, posterior femoral line of posterior 3.6 mm in length. femur very short. Apical fringe of posterior tibia Ataenius stroheckeri is one of a difficult com- with seven setae, without accessory spine. First plex of species closely allied to A. abditus (Halde- posterior tarsal segment subequal to long spur man) and A. texanus Harold. It is a very small and to following three segments combined. species like A. exiguus Brown but differs in lacking AUotype Female: 3.3 mm long; 1.3 mm wide. the alutaceous sculpture of that species, has more Apparently as in the male except that the pygidium evenly rounded hind pronotal angles, has larger is noticeably wider, being about one-fourth as long punctures on the elytral intervals, in good light as wide. those on lateral intervals are approximately as HOLOTYPE.—USNM 71743. wide as the striae, the four lateral intervals are 56 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY roughly punctate, and the outside rows of punc- anterior margin, the fluting gradually wider on tures on intervals 7 and 8 are separated by their successive segments, the 5th sternum separated diameters or less. away by a deep suture almost equally wide from Most of the specimens were received many years side to side, not wider at middle, the anterior edge ago from Dr. H. F. Strohecker, for whom the of the sternum roughly broken by coarse punctures species is named. which go down over the edge; all sterna with very moderate, rather shallow punctures from side to side, generally separated by about their diameters. 35. Ataenius texanus Harold Fourth sternum two-thirds as long as the preceding Ataenius texanus Harold, 1874a:23,—Horn, 1875:142; 1887:71. segment. Pygidium with disc roughly, not deeply Ataenius abditus texanus.—Schmidt, 1922:450. eroded. Anterior femora with perimarginal groove, DESCRIPTION.—Length 3.2 to 4.0 mm; width 1.4 surface smooth anteriorly, moderately punctate to 1.5 mm. Elongate, parallel, moderately convex, posteriorly, a little closer along posterior edge shining, black, legs and clypeal margin reddish. where the punctures are separated by less than Head moderately convex, clypeal margin very their diameters. Middle and hind femora with finely reflexed, with a small, sharp, triangular minute-to-fine, scattered punctures over disc; pos- tooth each side of a wide, median, moderately deep, terior marginal line of middle femur distinct over angulate emargination, sides weakly arcuate to outer one-third, broken and indistinct over inner nearly right-angled genae; surface of clypeus con- two-thirds; marginal line of posterior femora very cave behind median emargination; transversely short at knee. Apical fringe of posterior tibiae of wrinkled to middle of greatest convexity, basal eight setae longer at each end, without accessory half of clypeus smooth and practically impunctate, spine. First posterior tarsal segment equal in length front closely, gradually, very finely to very mod- to long spur and to following three segments com- erately punctate from clypeus to occiput, the punc- bined. tures dense, separated by less than half their Female similar in every way to the male except diameters. Pronotum 1.4 mm wide and 1.0 mm that the three middle abdominal sterna are about long, angles all obtusely rounded, the posterior equal in length, the pygidium is much shorter, angles less rounded than in A. hesperius, new with the apical half finely, densely punctate and species, the weakly arcuate sides and base margined, the eroded area reduced to a basal marginal line. the edge inconspicuously, minutely fimbriate- NEOTYPE (present designation).—USNM 72185. crenate under high magnification; surface every- TYPE-LOCALITY.—Cypress Mills, Texas. where evenly, densely, moderately punctate, the SPECIMENS EXAMINED.—213. punctures over the anterior one-third of the disc DATES COLLECTED.—April 1 to August 17. noticeably finer. Elytra about 2.3 mm long and DISTRIBUTION (Figure 16).—Kansas: Topeka. 1.4 mm wide, humeri moderately dentate, sides Oklahoma: Payne County. Texas: Austin, Colum- straight, parallel, striae fine, moderately deep, strial bus, Cypress Mills, Dallas, Del Rio, Devils River, punctures crenating inner sides of the very weakly Enchanted Rock, Houston, Kerrville, La Grange, convex, minutely alutaceous intervals, a row of Menard, New Braunfels, Nueces River (Zavalla close, minute punctures along outer margin of the County), Sabinal, San Antonio, Uvalde County, intervals, 9th and 10th intervals slightly more Victoria. convex and slightly roughly punctate. Mesosternum REMARKS.—I did not find Harold's type in the shagreened with fine, alutaceous sculpture and very Paris Museum. One specimen labeled A. texanus fine, short, decumbent hair; broadly, triangularly in Harold's collection does not fit the original carinate between the coxae. Metasternum shining, description. I found it to be A. puncticollis (Le- midline strong and deep, disc closely, moderately Conte). In his original description and remarks punctate anteriorly, gradually slightly finer pos- Harold (1874:23) described the head as very finely teriorly, finely, scabrously roughened outward to punctulate posteriorly, smooth medianly, finely sides, metasternal triangle deep, large, well-defined, granulate anteriorly; pronotum finely, densely roughened within. First visible abdominal sternum punctate, anterior margin subsmooth, the punc- margined, the next three sterna finely fluted along tures gradually somewhat larger toward the base; NUMBER 154 57

FIGURE 16.—Distribution of Ataenius apicalis Hinton, A. texanus Harold, and A. rhyticephalus (Chevrolat). * apicalis • texanus o rhyticephalus

color pitchy black. One other species, A. hesperius, to right-angled genae, edge finely reflexed; surface new species, approaches this description but most rather coarsely, transversely wrinkled up over great- localities are west of Texas and that species is est convexity, posterior clypeus finely, densely usually a dark reddish brown to black. punctate with minute, alutaceous sculpture inter- As recognized here, A. texanus is easily separated mixed, the punctures generally separated by slight- from other close relatives by the deep suture be- ly more than their diameters, frontal area with tween the 4th and 5th sterna being equally wide transverse band of close, fine-to-moderate punc- from side to side, not wider at the middle. A. bar- tures, finer anteriorly and blending into those of beri, new species, has a similar suture equally wide clypeus, generally separated by less than their from side to side, while in A. glaseri, new species, diameters; occiput smooth. Pronotum quadrate, the suture is equally wide only over the middle base arcuate, length 1.2 mm and width 1.6 mm, two-thirds, not reaching the sides. moderately convex, the sides almost invisible when viewed from directly above, anterior angles ob- tusely rounded, posterior angles very broadly, 36. Ataenius glaseri, new species evenly rounded from sides into base, sides and DESCRIPTION.—Holotype Male: Length 4.1 mm; base margined, margin apparently entire but under width 1.7 mm. Black, shining, elongate, parallel, high magnification minutely crenate-fimbriate, the moderately convex, legs reddish. Head moderately setae extremely short and separated by four or convex, clypeus dentate each side of wide, mod- five times their length; surface closely punctate erately deep emargination, sides slightly arcuate throughout, punctures of posterior disc moderately 58 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY coarse, separated by about their diameters, grad- 13 July 1965, under logs on sand shore of the ually finer anteriorly and approaching sides and Potomac River by O. L. Cartwright. base. Elytra 2.6 mm long and 1.7 mm wide, humeri SPECIMENS EXAMINED.—252. dentate, elytral striae moderately deep, strial punc- DATES COLLECTED.—June 13 to August 20. tures fine, separated by about four times their DISTRIBUTION (Figure 13).—Paratypes. District of diameters, crenating inner margin of intervals; Columbia (1): no date, Ulke Coll. (Carnegie intervals flat on disc, weakly convex laterally, Museum). Maryland (204): Elk Neck (16), 9, 16 strongly so over apical declivity, each interval with July 1963, John D. Glaser. Fort Washington (47): a row of fine punctures along outside margin ex- 4 July 1965, R. D. Gordon (42); 13 July 1965, O. cept laterally and apically where the punctures L. Cartwright (5). Marshall Hall (117): 4 July form a median row. Mesosternum broadly, weakly 1965, R. D. Gordon (1); 13 July 1965, O. L. Cart- carinate between the coxae. Metasternum shining, wright and R. D. Gordon (88); 19 July 1967, Jan midline long, strong, sharply impressed, disc with Foster and O. L. Cartwright (28). Prince Georges a few scattered, very fine punctures, finely scabrous County, NE of Wilson Bridge (24), under drift- at sides, metasternal triangle rather weak, slightly wood, 13 June 1971, W. H. Tyson. Virginia (47): roughened within. Abdominal sterna finely fluted Dumfries, Prince William State Park (2), 7 July in front, surface with evenly spaced, shallow, very 1965, R. D. Gordon. Jamestown (2), 7 July 1967, moderate punctures generally separated by about B. K. Dozier. Mount Vernon (41): 29 July 1967, twice their diameters, 5th sternum half the length August 1968, Jan Foster (40); 19 August 1963, of the 4th sternum, separated from 4th by a deep, J. D. Glaser (1). Nelson County (1), 23 June 1911, parallel-sided groove or suture, not longer at mid- W. Robinson. Wide Water Beach (1), 20 August dle, the widened middle section over middle two- 1963, J. D. Glaser. thirds of the suture. Pygidium uneven, convex REMARKS.—Paratypes vary from 3.2 to 4.3 mm apically, concave basally, closely punctate, very fine in length. Color varies from dark reddish, dark and close apically, very coarse basally, close, shal- brown through reddish black to piceous. Rarely, low, and strongly alutaceous within. Anterior the long spur of the hind tibia is slightly longer femora with perimarginal groove, surface smooth than the first tarsal segment. Otherwise I found in front near trochamer, elsewhere with five well- very little variation. separated, setigerous punctures. Middle and hind Ataenius glaseri resembles A. puncticollis (Le- femora smooth and shining, posterior femoral line Conte) very closely; however, in A. glaseri the pro- of middle femur about one-third total length in- notum is more quadrate, with less arcuate sides, ward from knee, barely a trace on posterior femur. is frequently widest through the anterior angles, Posterior tibial fringe worn away in holotype but and the first segment of the posterior tarsus prac- paratypes show nine very short, closely spaced tically always is subequal to the long spur and to setae, without accessory spine; long spur subequal the following three segments combined. In A. to first tarsal segment and to the following three puncticollis the firstsegmen t of the posterior tarsus is noticeably shorter than the long spur, more segments combined. swollen apically, and noticeably shorter than three Allotype Female: Length 4.1 mm; width 1.6 mm. following segments combined. In A. puncticollis The more noticeable differences from the male the sutural interval has a noticeable median row are the longer pygidium and 5th abdominal ster- of close, fine punctures. A similar row in A. glaseri num. The 5th sternum almost equals the length is much finer and less noticeable. Other elytral of the 4 th sternum. The posterior femoral lines punctures, especially at shoulders, also are more are slightly longer on both middle and posterior noticeable in A. puncticollis. femora, one-half on the middle and one-fifth on Nearly all specimens of A. glaseri have been col- the posterior. lected under logs and in debris on the sandy shores HOLOTYPE.—USNM 71744. of the Potomac River and upper Chesapeake Bay. TYPE-LOCALITY.—The holotype was collected at The species is named for John D. Glaser, who Marshall Hall, Maryland, 19 July 1967, by Jan first collected specimens which were recognized as Foster. The allotype was taken at the same place a new species. NUMBER 154 59 37. Ataenius punctifrons, new species segment equal to following three segments together, and slightly shorter than long spur. DESCRIPTION.—Holotype Male: Length 3.6 mm; Allotype Female: Length 3.8 mm; width 1.5 mm. width 1.5 mm. Elongate, parallel, dark reddish Penultimate sternum not noticeably shortened at brown, legs and clypeal margin slightly lighter in middle, pygidium wider and not as long as in male. color. Head moderately convex, clypeal margin finely, sharply dentate each side of slightly angu- HOLOTYPE.—USNM 71749. TYPE-LOCALITY.—Minneapolis, Minnesota, 22 late, moderate median emargination, lateral mar- May 1875, R. J. Mendenhall. gin weakly arcuate, finely reflexed, genae distinct, SPECIMENS EXAMINED 306. obtusely rounded; clypeal surface transversely DATES COLLECTED.—January 27 to October 10. rugose below median convexity which is very finely DISTRIBUTION (Figure 10).—Paratypes. Arizona punctate, punctures of upper clypeus and to sides (18): Douglas (1), 15 July 1969, J. H. Russell. gradually very slightly larger, gradually still larger Harshaw (1), 29 July 1941, F. H. Parker. Madera and closer over front, becoming contiguous and Canyon, Santa Rita Mountains (1), 27 August moderate in size. Pronotum convex, the arcuate 1952, B. Malkin. Patagonia (15): 5, 10 July 1936, lateral margins hidden when viewed from directly M. Cazier (13); 21 August 1940, F. W. Nunen- above, width 1.4 mm and length 1.0 mm, anterior macker (1); 15 July 1955, F. G. Werner and G. D. angles obtusely rounded, posterior angles very Butler (1). Arkansas (6): Devils Den State Park broadly rounded, sides and base finely margined, (1), 1966, R. W. Hodges. Hope (1), 30 July 1926, marginal setae minute and barely visible, surface L. Knoble (M. Robinson Coll., USNM). Jackson very uniformly densely moderately punctate, nar- County (1), 1 September 1960, Tuckerman. Pine rowly, gradually, finely punctate along anterior Bluff (1), 10 October, H. Soltau Coll. (USNM). margin, finer than frontal punctures. Elytra con- Washington County (1), 6 April 1938. West Mem- vex with lateral margins slightly arcuate, length phis (1), 5 August 1946, O. L. Cartwright. Cali- 2.3 mm and width 1.5 mm, humeri finely dentate, fornia (4): Covina (1), 21 July 1934 (M. Robinson elytral striae moderately deep, fine punctures are- Coll., USNM). Napa (2), no date (M. Robinson na ting inner side of moderately convex intervals, Coll., USNM). Pasadena (1), 4 April, Dr. A. a row of close minute punctures along outside edge Fenyes. Colorado (8): Canon City (2), 14 April, H. of intervals, shoulders closely finely punctate, lat- Soltau Coll. (1, USNM); no date, Wickham (1, eral intervals slightly more convex. Mesosternum Horn Duplicate No. 302-1891). Logan County (2), finely shagreened, rather broadly carinate between 1923, Sandhouse Coll. Rocky Ford (3), under coxae. Metasternum shining, midline long and squash vine, 12 July 1910, McMillan. Stirling (1), deep, moderately, not very closely punctate an- no date, Sandhouse (M. Robinson Coll., USNM). teriorly and outward to sides, punctures gradually Illinois (10): Cartersville, Williamson County (1), finer posteriorly, finely scabrous at extreme sides, 15 May 1957, V. Cole. Chicago (5): 26 May 1912 metasternal triangle moderately deep with a small (3, W. Robinson Coll., USNM); bred from onion eroded pit at anterior angle. Abdominal sterna (1), 1 July 1911; on onion (1), 29 June 1916. Ha- shining, moderate punctures from side to side sep- vana (1), 18 August 1907, J. D. Hood. "N. Illinois" arated by one to two or more times their diameter, (1), no date, Charles W. Leng. Pittsfield, Pike first visible sternum with marginal line, remaining County (2), 15 August 1946, A. T. McClay. In- sterna fluted along posterior margin, the fluting diana (1): Hovey (1), 3 June 1964, Charles E. of terminal sternum about one-third length of the White. Hovey Lake (6), blacklight, 24 June, 9 preceding sternum, which is shorter at middle than July, 1965, Charles White. Porter County (2), lake- at sides. Pygidium smooth apically, upper two- drift of Lake Michigan, H. Dybas. Tremont (2), thirds eroded. Anterior tibia with perimarginal 20 May 1934, H. Dybas. Iowa (20): Ames (9): 12 groove, smooth anteriorly, scattered, fine punctures May 1947, R. L. Collins (1); 26 April 1948, W. H. along posterior margin. Middle and posterior Tate (2); 20 May 1934, G. L. McNew (1); 30 April femora shining, smooth, barely a trace of posterior 1934, H. K. Chen (1); 18 April 1934, Don E. Ellis marginal line at knee; seven setae in terminal (1); May 1943, L. Dalencour (1); 26 May 1948, tibial fringe, without accessory spine; first tarsal R. E. Cleary (1); 14 May 1950, A. R. Garlin (1). 60 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY Cedar Rapids (2), 4 May, Wickham. "County #12" gee (1), at light, 24 June, J. D. Mitchell. Payne (1), 5 July 1934, W. E. Dodds. Elma (2): 16 May, County (7), 3, 13 May 1924, 7 April 1925, 21 Au- George M. Green (1); 16 May 1902, no other data gust 1926, W. J. Brown. South McAllister (1), 11 (1). Iowa City (5): 12 May 1895 (1, Wickham June, Wickham. South Dakota (14): Brookings Coll. USNM); 24-25 May 1916, L. L. Buchanan (7): 8 July 1943, H. C. Severin (1, Cartwright Coll., (2); 25 May, Wickham (1); 27 January 1895 (1, USNM); 21 June, 7, 8, July 1943, 15 June 1944, 23 Wickham Coll., USNM). Lake Okaboji (1), 24 July 1948, H. C. Severin (6). Chamberlain (2), 13 July 1917, L. L. Buchanan. Kansas (21): Douglas June 1940, H. C. Severin. Elk Point (1), 17 June County (3): April, E. S. Tucker (1); 21 May 1921, 1946, H. C. Severin. Highmore (4), light trap, 22 5 May 1923, W. J. Brown (2). Gardiner Lake, John- June, 1, 8, 16 July 1944, H. C. Severin. Tennessee son County (1), 3 May 1952, Bell and Spangler. (36): Reelfoot Lake, 10 June 1946, O. L. Cart- Lawrence (5): 21 July 1930, M. W. Sanderson (1); wright. Texas (51): "Texas," no other data (3). no date, H. Soltau (2); electric light, W. J. Brown Austin (1), 29 June, H. Soltau Coll. (USNM). (2). Mount Hope (2), 20 June (Wickham Coll., Big Bend National Park (21): Brewster County USNM). Muncie (1), 9 July 1926, George M. (1), 28 August 1937, Rollin H. Baker; Boquillas Green. Ottawa (1), 15 July 1923, W. J. Brown. (13), 1850 ft, 17, 23 May 1959, Howden and Becker; Topeka (7): 23 July, C. V. Riley (1, USNM); 1 Glen Springs (1), 5 mi N, 3000 ft, 24 May 1959, June, 19 July, Popenoe (4); 7, 8 July, no other Howden and Becker; Santa Elena (6), 2200 ft, 4, data (2). Wakhena (1), no date, W. M. Mann. 21 May 1959, Howden and Becker. Brownsville (5): Louisiana (8): Alexandria (6): in dry corn stalks, 3 May 1904, H. S. Barber (1); 24 April 1908, Mc- 26, 27 February 1909, Hunter Coll. (4); corn field, Millan (4), Brownwood (4), 5 October 1905, W. D. 5 April 1911, G. D. Smith (2). Houma (1), 1958, Pierce. College Station (1), 22 April 1930, H. J. S. D. Hensley. Shreveport (1), 3 July 1891, F. W. Reinhard. Columbus (3), 9 July, 17 August, Hub- Mally. Michigan (5): Detroit, no date, Hubbard bard and Schwarz. Cypress Mills (1), no date, Hub- and Schwarz (3); August, Hubbard and Schwarz bard and Schwarz. Dallas (1, Wickham Coll. (2). Minnesota (19): Buffalo (5), 30 July, 5, 10 USNM). Devils River (1), 4 May 1907, E. A. August, 6 September 1947, S. I. Parfin. Faribault Schwarz. Enchanted Rock, Llamo County (1), (2), at light, 14 June 1934, A. A. Granovsky. Minne- light trap, 18 April 1959, H. F. Howden. Fort Davis apolis (8, includes allotype), 12 May 1875, R. J. (3), at light, 10, 31 May 1959, Howden and Becker. Mendenhall. St. Paul (4), at light, 1 May 1934, Grayson County, Jupiter Point, Lake Texhoma, A. A. Granovsky. Missouri (9): "Mo." (1), no date, 12 mi N of Whitesboro (1), 16 April 1968, W. T. Pergande. Black Jack (1), on Helianthns Suter. Kerrville (2): 1 April 1959, Becker and tuberosa, 30 October 1930, Satterthwate. Charles- Howden (1), at light, 30 May 1906, F. C. Pratt (1). ton (1), trap light, 18 April 1917, Satterthwate. Lajitas, SW Brewster County (1); 19 May 1959, Parkville (1), 25 May 1947, J. H. Laffoon. St. Howden and Becker. Sabinal (2): April 1910, Louis, (1), George M. Green. Webster Groves (4), Pierce and Pratt (1); June 1910, no other data (1). 16 August 1928, 12 July 1930, Satterthwate. Ne- Wisconsin (36): Dane County (1), 12 April 1897. braska (3): Ainsworth, 2 mi S Brown County (1), Griffith State Nursery, Wood County (29), 20, 22 5 July 1946, R. G. Schmidt. West Point (2), 16 May, 10, 14, 26 June, 6 July 1948, 4 May, 2, 12 June May, May 1888. New Hampshire (1): "N. H.," no 1949, R. D. Shenefelt. Nekoosa, Wood County (5), date, Roland Hayward. New Jersey (8): Hillsdale, 25, 28 August 1948, 28 July, 10 August 1949, R. D. 4 July 1919, Shoemaker. New Mexico (2): Artesia Shenefelt. Port Edwards, Wood County (1), 6 Au- (1), 29 July 1937, D. J. and J. N. Knull (M. Robin- gust 1949, R. D. Shenefelt. Mexico (3): Coahuila: son Coll., USNM). Bernalillo (1), 15 July 1923, Boquillas del Carmen, 1850 ft, 29 May 1959, How- F. Psota. North Dakota (3): Cavalier County (1), den and Becker. 7 July 1916, Larry Kotchman. Slope County (2), black light, 30 June 1966, Robert Gordon. Ohio REMARKS.—Ataenius punctifrons differs from A. (1): "Ohio," no other data. Oklahoma (11): Lake texanus in the noticeably punctate front and upper Texhoma, Marshall (1), 16 June 1968, W. Suter. clypeus and in punctures of the anterior femora Hinton (1), 26 July 1966, W. Rosenberg. Okmul- being along the posterior half, leaving the an- terior part nearly smooth. The clypeus and front NUMBER 154 61 of A. texanus are smooth, sometimes with minute much closer and smaller, penultimate sternum frontal punctures, and the anterior femora are shortened at middle, about two-thirds as long as more widely and distinctly punctate. Abdominal at sides. Pygidium very finely punctate at apex, fluting of 5th sternum in A. punctifrons is longer eroded gradually more deeply to base. Anterior at middle than at sides. femur with perimarginal groove, anteriorly with minute, scattered punctures, gradually larger and 38. Ataenius utahensis, new species transversely elongate posteriorly. Middle and pos- terior femora shining, with scattered, minute punc- DESCRIPTION.—Holotype Male: Length 3.9 mm; tures, posterior marginal line reduced to a mere width 1.6 mm. Elongate, parallel, shining, dark trace at knee. Apical fringe of posterior tibia of reddish brown. Head convex, finely reflexed clypeal seven or eight fine setae, without accessory spine, margin, sharply, triangularly dentate each side of first tarsal segment shorter than long spur and moderate median emargination, sides weakly arcu- three following segments combined. ate, genae obtusely right-angled; surface coarsely, Allotype Female: Length 3.4 mm; width 1.4 mm. transversely rugose anteriorly below greatest con- Differs from the male in penultimate abdominal vexity, upper clypeus smooth to minutely punc- sternum not shortened at middle and the pygidium tate shading to very fine across upper front. Pro- wider. notum quadrate, 1.5 mm wide and 1.1 mm long, Paratypes vary in length from 3.4 to 4.1 mm. convex lateral margin not visible from directly The clypeus appears impunctate or very minutely above, anterior angles obtusely rounded, posterior punctate. angles very broadly rounded, sides and base finely HOLOTYPE.—USNM 71750. margined, lateral setae very minute, scarcely dis- TYPE-LOCALITY.—St. George, Utah, A. M. Wood- cernible; surface closely punctate throughout, the bury collector (Wickham Collection). punctures moderate at middle of disc, separated SPECIMENS EXAMINED Six. by a little less than their diameter, very gradually DATE COLLECTED.—October 1. finer away in all directions especially anteriorly, DISTRIBUTION (Figure 11).—Paratypes and allo- except in the lateral foveae and anterior angles type. Zion Park, Utah (5), 1 October 1934, Bryant. where the punctures become noticeably larger and REMARKS.—Ataenius utahensis resembles A. tex- practically contiguous. Elytra 2.5 mm long and anus very closely in the practically smooth upper 1.6 mm wide, convex, humeri finely dentate, striae clypeus, but A. utahensis is shorter, more convex, moderately deep, fine strial punctures weakly cre- with more noticeably punctate shoulders, and lat- nating the inner margin of the convex intervals, eral intervals which are more convex with weaker a row of very fine punctures along outside margin, crenations. The larger, closer punctures in the those of the outside intervals slightly more no- lateral pronotal fovea and anterior angles are ticeable, shoulders noticeably punctate, outside especially noticeable. intervals otherwise not different. Mesosternum shagreened as usual with fine, close punctures and 39. Ataenius hesperius, new species short, fine, decumbent hairs, broadly carinate be- tween the coxae. Metasternal midline long and DESCRIPTION.—Holotype Male: Length 3.9 mm; deep, disc with scattered, very moderate punctures, width 1.6 mm. Piceous, elongate, parallel, mod- slightly smaller posteriorly, separated by about one erately convex, shining; anterior pronotal angles, diameter, finely scabrous from halfway to sides, margins of head, and legs dark reddish brown. metasternal triangle with a small scabrous spot at Head convex; clypeus anteriorly broadly, moder- anterior angle. First visible abdominal sternum ately emarginate between small, sharp teeth, with posterior marginal line, remaining sterna anterior fourth of clypeus strongly shining, very finely, narrowly fluted along anterior margin, granulate-rugose, median convexity smooth, actually the fluting much wider on penultimate sternum, extremely minutely punctate under high magnifica- middle three sterna evenly, moderately punctate tion, the punctures upward gradually more notice- from side to side, the punctures separated by one able and slightly increasing in size but still fine or two diameters, punctures of terminal sternum and dense across the occiput where they are sep- 62 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY arated by about their own diameters; margin of shorter than long spur, about equal in length to clypeus finely reflexed, sides weakly arcuate, genae following three segments combined. not prominent, nearly right-angled. Pronotum 1.0 Alloiype Female: Very similar to the holotype mm long and 1.5 mm wide, approximately quad- male except that its pygidium is not as long, the rate viewed from directly above, viewed laterally 4th sternum is not as short at middle, and the 5th sides arcuate to very obtuse, rounded posterior an- sternum is longer. gles, sides and base margined, the edge apparently HOLOTYPE.—USNM 71757. entire but under high magnification actually mi- TYPE-LOCALITY.—Arizona: Huachuca Mts., Sun- nutely crenate and fimbriate with very fine, short, nyside Canyon, 8 August 1970, K. Stephan. widely spaced setae; surface everywhere evenly, SPECIMENS EXAMINED.—153. densely, moderately punctate, narrowly finer along DATES COLLECTED.—February 17 to October 26. middle anterior margin, punctures generally sep- DISTRIBUTION (Figure 17).—Paratypes. Arizona arated by less than their diameter on disc, closer (85): "Arizona" (1), no date, Morrison (Hubbard in anterior angles. Elytra 2.6 mm long and 1.6 mm and Schwarz Coll.). Chiricahua Mountains (12): wide, smooth, shining, humeri finely dentate, striae 20 July 1953, 2 July, D. J. and J. N. Knull (6, moderately deep, crenate-punctate, the crenations Cartwright Coll., USNM); 26 July 1952, 13, 22 cutting the inner margins of the slightly convex July 1953, D. J. and J. N. Knull (4, Cartwright intervals, a row of fine punctures along outside of Coll.); 2, 4 July, Hubbard and Schwarz (2, USNM). intervals, lateral intervals, especially last two, some- Fort Grant (1), 12 July, Hubbard and Schwarz. what roughened by strial crenations and more Fort Yuma (1), 27 June, Hubbard and Schwarz medially placed row of punctures, humeri also (USNM). Huachuca Mountains (13): Sunnyside roughened, sutural interval with median row of Canyon (6, includes allotype), 8 August 1970, K. close, fine punctures which become much closer Stephan Coll.; no other data (7, Brooklyn Museum at apex. Mesosternum shagreened, with moderately Coll.). Oak Creek (10), 12 July 1937, W. F. Turner, dense, short, decumbent hair; strongly carinate be- C-2586. Pajarito Mountains, Pena Blanca Canyon tween the coxae. Metasternum with strong deep (16), 11, 28 July 1970, K. Stephan Coll. Patagonia midline; flat discal area with scattered, fine punc- (5): 5 July 1936, M. Cazier (4); 21 August 1940, tures, finer posteriorly, separated by two times their F. W. Nunenmacker (1, Cartwright Coll., USNM). diameters or more, punctures gradually larger out- Pinal Mountains (2), no date (Wickham Coll., ward to scabriculate area at sides, metasternal USNM). Portal, Southwest Research Station (5): triangle moderate and scabriculate within. Abdomi- 15 July 1961, B. Benesh (2); 13 August 1951, R. H. nal sterna closely punctate, the punctures moderate Arnett (2); 5400 ft, 1-3 July 1956, O. L. Cart- and separated by about their diameter at middle, wright (1). St. Johns, Apache County (1), at light, gradually becoming slightly larger outward to 29 July 1959, R. S. Beal. Santa Catalina Mountains sides, sterna finely, closely fluted along anterior (9): Bear Canyon (2), 6 August 1970, K. Stephan margin. Suture deep between 4th and 5th sterna, Coll.; Molino Canyon (6), 23 June, 10 July 1968, not noticeably suddenly wider at middle but from 26 June, 26 August 1969, 2 July 1970, K. Stephan side to side gradually wider to middle then decreas- Coll.; Sabino Canyon (1), lights, 30 July 1954, F. ing to opposite side. Pygidium eroded medially, G. Werner. Santa Rita Mountains (18): Madera posterior or apical edge finely punctate. Anterior Canyon (9): 24 July 1968, 6 August 1970, K. femora with perimarginal groove, surface finely to Stephan (3); 27-28 August 1952, B. Malkin and moderately punctate, punctures closer and more W. J. Tilden (6). California (41): Fresno (2), 8, numerous over posterior half. Middle femora with 26 May, E. A. Schwarz. Independence (2), 17 July, scattered, very fine punctures, postfemoral line Wickham (Wickham Coll., USNM). Lone Pine (1), about two-fifths total femoral length. Posterior no other data. Los Angeles County (6): no date femora similarly punctate, posterior femoral line (4, Coquillet Coll., USNM); July, A. Koebele (1); very short at knee, less than width of femur at "Ulke 62" (1, Wickham Coll., USNM). Napa (3), knee; tibiae without accessory spine, eight fimbriae no date (M. Robinson Coll., USNM). Palm Springs in terminal fringe; first tarsal segment slightly (3): "15 J," Hubbard and Schwarz (1); 27 August. NUMBER 154 63 no other data (1); 2 October, Hubbard and parallel, only moderately convex, weakly shining. Schwarz (1). Pasadena (6): 17 August, no other Head moderately convex; clypeus broadly, shal- data (4); 7 April 1877 (2, Los Angeles County lowly emarginate with a small, sharp tooth each Museum). San Bernardino County (10): no date, side of emargination, anterior third strongly shin- Coquillet (8); no other data (2). San Diego (5), ing and transversely rugose, the rugae not over no date, G. H. Field (Chittenden Coll., USNM). greatest clypeal convexity which is very finely, Santa Rosa Mountains (2), 5, 25 June 1946, D. J. closely, distinctly punctate, the punctures gradu- and J. N. Knull (Cartwright Coll., USNM). Sunol ally larger upward over front and occiput; margin (5 mi S), Alameda County (1), no other data. of clypeus very finely reflexed, sides weakly arcuate Colorado (1): Canon City, 16 April (Soltau Coll., before genae, genae not prominent, approximately USNM). Kansas (1): Seneca, 11 July 1964, K. right-angled. Pronotum nearly rectangular from Stephan. Louisiana (3): Montgomery (1); 26 Oc- directly above, from the side posterior angles tober 1892 (H. Soltau Coll., USNM). New Orleans broadly rounded; lateral and basal margin appar- (2), no date, "Shufeldt from USDA." Nebraska ently entire but very finely crenate with widely (I): Lincoln, 5 May (H. Soltau Coll., USNM). spaced, extremely short, minute setae under high New Mexico (5): Aztec (3), 28 July 1895, gift of magnification; surface densely, moderately, uni- C. T. Brues (Cartwright Coll., USNM). City of formly punctate everywhere, slightly closer laterally, Rocks State Park (1), 17 July 1959, K. V. Krombien. especially in the anterior angles where the punc- Las Vegas (1), 12 August (Barber and Schwarz tures tend to coalesce. Elytra microreticulate, Coll., USNM). Oklahoma (3): Ardmore, 5 April humeri finely dentate, striae fine, deeply, finely 1908, "Hunter No. 1486," C. R. Jones. South Da- punctate, intervals very moderately convex, the kota (1): Spearfish, light trap, 16 July 1944, H. C. lateral intervals more noticeably roughened by Severin (Cartwright Coll., USNM). Texas (11): microreticulate or alutaceous sculpture and an out- "Texas," no date (1, C. V. Riley Coll., USNM). side row of fine punctures, humeri noticeably Austin (1), 29 June, H. Soltau. Columbus (3): alutaceous, sutural intervals with row of close, fine "Horn dupl. No. 62, 1892" (1 Wickham Coll., punctures, striae noticeably widened over posterior USNM); 22 May, C. V. Riley (1); 20 June, Hub- declivity, lateral margin and intervals over declivity show very minute, short, closely spaced setae under bard and Schwarz (1). Dallas (1), at light, "Hunter high magnification. Mesosternum shagreened, with No. 318," F. C. Bishopp. Sabrinal (1), 7 September moderately dense, short, decumbent, fine hairs; 1910, F. C. Pratt. San Diego (2), 25 May (Hubbard strongly carinate between the coxae. Metasternum and Schwarz Coll., USNM). Victoria (1), 31 March, with strong, deep midline; flattened discal area E. A. Schwarz. Wolfe City (1), 17 February 1908, moderately, closely punctate, punctures separated "Hunter No. 1465," C. R. Jones. by about their diameter, the punctures extending REMARKS.—Ataenius hesperins is very closely out laterally to the finely scabriculate area of the similar to A. texanus; however, the pronotum is outer third, metasternal triangle deep and scabricu- more uniformly punctate with fewer fine punctures late within. Abdominal sterna moderately, closely, anteriorly at middle and the deep suture between shallowly, uniformly punctate from side to side, the 4th and 5th sterna decreases in width at sides. finely, very closely fluted along anterior margin. Its distribution is farther west than that of A. Pygidium medially eroded and alutaceous, bor- texanus. dered by shiny posterior margin. Anterior femora with perimarginal groove, surface moderately, closely punctate. Middle femora with moderate 40. Ataenius abditus (Haldeman) punctures throughout separated by about their Aphodius (Oxyomus) abditus Haldeman, 1848:106. diameter, deep posterior marginal line inward from Ataenius abditus.—Harold, in Gammingcr and Harold, 1869: knee over half length of femur. Posterior femora 1066—Horn, 1875:142; 1887:72.—Schmidt, 1922:149. more finely punctate, the punctures separated by Ataenius attenuator Harold, 1874:22 Horn, 1875:142. two or more times their diameter, and posterior DESCRIPTION.—Length 3.3 to 4.0 mm; width 1.4 femoral line short, about equal to width of femur to 1.5 mm. Black or brownish black, elongate- at knee; tibiae without accessory spine, terminal 64 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY fimbriae 8 to 10 in number, first tarsal segment the smaller exiguus Brown, while texanus is smooth slightly shorter than long spur and equal to fol- and shining. Ataenius abditus is often found among lowing three segments combined. the roots of grasses on the sandy banks of streams. HOLOTYPE.—Museum of Comparative Zoology, Ataenius exiguus is slender and smaller with redder in LeConte collection, No. 8359. legs than A. abditus and occurs from North Caro- TYPE-LOCALITY.—"Middle States" (i.e., Middle lina to Mississippi, usually near the seashore. Atlantic States). Ataenius abditus is generally distributed east of SPECIMENS EXAMINED.—325 +. the Mississippi River. DATES COLLECTED.—March 20 to November 3. DISTRIBUTION (Figure 12).—District of Columbia. Florida: Neshamy. Georgia: Alapaha River (17 mi 41. Ataenius exiguus Brown E of Nashville), Athens (Horshoe Bend, Clarke Ataenius abditus exiguus Brown, 1932:10. County). Illinois: Riverside. Indiana: Kosciusko County, Lake County, Porter County, Tippecanoe DESCRIPTION.—Length, 2.7-3.2 mm; width 1.1-1.2 County. Kentucky: Cumberland Falls (Whitley mm. Black, elongate, parallel, moderately convex, County), Summit. Maryland: Anne Arundel Coun- weakly shining; legs reddish brown. Head moder- ty (S. I. Java Farm), Baltimore, Beltsville, Chesa- ately convex; clypeus broadly, shallowly emarginate peake Beach, College Park, Kenwood Beach, between small, sharp, triangular teeth; sides very Laurel, Marlboro, Marshall Hall, Plummers Is- finely reflexed, arcuate; genae not prominent, dis- land, Takoma Park. Massachusetts: Amherst. Mich- tinctly angled, more than right-angled; clypeus igan: Detroit, Isabella County, La Salle, Midland finely, transversely rugose in front below greatest County, Monroe, Port Huron. Mississippi: Green- convexity; middle very finely to minutely punctate, wood, Gulfport, Lucedale. New Hampshire: Went- head basally with a rather broad band of closer, worth. New Jersey: Atko, Ballingers Mill, Camden, larger punctures. Pronotum nearly rectangular Colonia, Hadden Heights, Hartford, Hillsdale, from directly above, very slightly wider in front, Lavalette, Phillipsburg, Westville. New York: moderately convex, anterior angles obtusely Douglaston (Long Island), Peekskill, Staten Island. rounded, posterior angles broadly rounded; surface North Carolina: Balsam, Black Mountain, Eden- in general closely, evenly, uniformly punctate ton, Highlands, Hot Spring (French Broad River), throughout, sometimes closer in anterior angle, Looking Glass Mts., Melrose, Mitchell County, elsewhere, under high magnification, smooth to Pisgah National Forest, Raleigh, Retreat, Sunburst. minutely microreticulate or alutaceous; fine lateral Ohio: Hocking County, Ottawa County, Schoen- and basal bead showing extremely minute crenula- brun (Tuscarawas County), Toledo. Pennsylvania: tions and setae under high magnification. Elytra Jeannette, Manayvick, Pittsburgh. South Carolina: finely to minutely microreticulate or alutaceous, Aiken, Anderson County, Belton, Cayce, CCC humeri finely dentate, striae fine, crenate-punctate, Camp No. 2, Clemson, Columbia, Eastatoe River, intervals convex with row of punctures separated Edgefield, Greenville County, Hampton, Jenkins- by three or four times their diameters along inner ville, Jocassee, Marion, Salem, Sandy Springs, Sassa- margin and a row of fine punctures along outer fras Mtn., Summerville, Walhalla. Tennessee: Cen- side, alternate intervals with punctures closer and tral, Cummins Mill (Jackson County), Green more numerous, sutural intervals flat, extreme lat- Branch Cove (Great Smoky Park). Vermont: Dux- eral interval not, or very slightly, crenate on inner bury (Winooski River), Jonesville (Winooski margin, otherwise not different, humeral area dis- River). Virginia: Fairfax, Falls Church, Fort Mon- tinctly punctate, epiplurae flat or slightly concave, roe. West Virginia: White Sulphur Springs. Can- alutaceous, striae not noticeably widened apically; ada: Ontario: Hemmingtord, La Salle, Lexington, punctures of elytral margin and apical declivity Long Point, Point Pelee, Tilbury, Toronto, Turkey with minute, extremely short setae under high mag- Point. New Brunswick: French Lake. nification. Mesosternum shagreened, with minute, REMARKS.—Ataenius abditus (Haldeman) is fine, decumbent hairs, carinate between the coxae. close to A. texanus Harold and A. exiguus Brown. Metasternum with strong, deep midline, disc It is black and usually noticeably alutaceous, as is coarsely punctate, the punctures separated by one NUMBER 154 65 or two times their diameters, coarse punctures out- 42. Ataenius sciurus, new species ward to finely rugose area at sides, metasternal DESCRIPTION.—Holotype Male: Length 6.4 mm; triangle deep and finely, closely, rugosely punctate. width 3.0 mm. Elongate-oblong, convex, shining, Abdominal sterna shallowly, evenly, coarsely punc- dark castaneous. Head convex, clypeal margin tate as on metasternum, finely fluted in front. finely reflexed, broadly rounded each side of rather Eroded area of pygidium scabriculate. Anterior shallow median emargination, sides arcuate to femora with perimarginal groove, surface punctate broadly rounded genae; clypeus minutely wrinkled, throughout, punctures separated by one or two minutely punctate, moderately shining and concave diameters. Middle femora similarly strongly punc- behind median emargination; gradually very fine, tate, postfemoral line about half femoral length. to fine, to very moderately coarse punctures upward Punctures of posterior femora somewhat finer and over median convexity to base of clypeus, a trifle not as close, postfemoral line very short, not as larger laterally where they are slightly elongate, long as width of femur at knee; apical fringe of and deeper posteriorly, generally separated by their eight or nine short fimbriae, no accessory spine, diameter or less; frontal punctures dense, round, long spur subequal to first tarsal segment, first and about the same size as adjacent clypeal punc- tarsal segment equal to combined length of the tures but closer, practically contiguous at suture, following three segments. gradually more widely separated toward base. Pro- TYPE.—In Museum of Comparative Zoology. notum unusually short and wide, length 1.5 mm TYPE-LOCALITY.—Homestead, Florida. and width 2.5 mm, anterior angles very obtusely SPECIMENS EXAMINED.—80 + . rounded, sides nearly straight, hind angles feebly DATES COLLECTED.—January 19 to October 15. emarginate, base faintly sinuate and weakly lobed DISTRIBUTION (Figure 17).—Florida: Arcadia, at middle, base margined but sides not distinctly Archbold Biological Station, Biscayne Bay, Boyn- so, edge fimbriate-crenate under moderate magnifi- ton, Bradenton, Dunedin, Fort Lauderdale, Gaines- cation, the crenations distinct but the setae minute ville, Hernando County, Highlands Hammock and not easily seen; disc with mixed, very fine and State Park, Homestead, Jacksonville, Jupiter, La very moderate, scattered punctures, laterally the Belle, Lake Letta, Levy County, Mayport, Miami, fine punctures disappear, and moderately coarse Naples, Oneco (Manatee County), Otter Creek, punctures become quite dense, separated by half Pablo Beach, Panacea, Punta Gorda, St. Augustine, their diameters or less. Elytra convex, sides arcuate, St. Petersburg, Sebring, Titusville, Vilano Beach, length 4.2 mm, width posterior to middle 3.0 mm, West Palm Beach, Winter Haven, Winter Park, humeri finely, sharply dentate, striae fine, moder- Zolfo Springs. Georgia: Savannah, Tybee Beach. ately deep, deep strial punctures separated by about Mississippi: Gulfport, Keesler Field. North Caro- five times their diameter, slightly crenating sides lina: Balsam (doubtful locality). South Carolina: of moderately convex intervals, intervals, including Charleston, Folly Beach, Hilton Head, Mount sutural, with scattered, fine, very minutely setiger- Pleasant, Myrtle Beach, Sullivans Island. ous punctures more or less in two rows, the ex- REMARKS.—Ataenius exiguus is noticeably smaller treme edges of the interval with a fine alutaceous than A. abditus, with a wide, distinct band of closer line, 10th interval flat, alutaceous with a median larger punctures basally above a nearly smooth row of low, indefinite, shiny tubercles, shoulders middle convexity of the clypeus. Compared to the coarsely punctate; striae become much wider and length of the pronotum, the elytra are relatively the intervals subcarinately convex over apical de- shorter in A. exiguus. In A. exiguus the elytra and clivity; strongly convex apical edge of elytra closely, the elytral intervals are more convex than in A. noticeably very moderately punctate. Mesosternum abditus. shagreened as usual, low, wide, shining carina be- Most specimens have been taken in sandy coastal tween the coxae. Metasternum shining, midline areas in the southeastern states. I collected long long, fine, moderately deep, deeper at each end, series under rings of fine debris left behind the surface with rather scattered, very fine punctures, dunes around temporary rain pools after a heavy finely scabrous out to sides, rather shallow rain at Folly Beach, South Carolina. metasternal triangle very finely scabrous within. 66 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 17 Distribution of Ataenius exiguus Brown and A. hesperius, new species. • extern us *k hesperius

First visible abdominal sternum with strong pos- the puncturest noticeably elongate, end to end, terior marginal line. Remaining sterna fluted along similarly punctate over outer fourth, discal area anterior margin, the fluting increasingly longer on gradually more finely and less closely punctate successive sterna, those of 5th sternum at middle toward base, posterior marginal line deep and nearly half the length of the sternum; surface entire. Posterior femora very similar but the punc- everywhere very finely alutaceous, the sterna weakly tures round and fewer in number, three or four convex, strongly, closely punctate from side to coarse setigerous punctures at knee, posterior mar- side, punctures at middle finer and less close, ginal line deep and entire. Apical fringe of pos- toward sides coarser, closer, shallower, becoming terior tibia with nine close, short, even setae, a noticeably elongate at extreme sides. Pygidium with long, strong, triangular accessory spine and with- shiny, convex, coarsely punctate, wide apical lip out an intervening seta. Metatarsus nearly one-third connected to base by a sharp median carina, the longer than long spur and equal to the follow- eroded disc finely alutaceous with a few fine, scat- ing four segments combined. The 4th abdominal tered tubercles, the alutaceous surface slopes grad- sternum is shorter at middle and the pygidium ually from the apical lip to the deepest point at much longer than in the female. the high carina-like basal edge. Anterior femora AUotype Female: Length 6.0 mm; width 2.8 mm. with perimarginal groove, surface densely, sca- I noticed no differences from the holotype other brously punctate anteriorly, less scabrous and punc- than the longer 4th abdominal sternum and shorter tures well-separated posteriorly. Middle femora pygidium. coarsely, closely punctate along anterior margin, HOLOTYPE.—USNM 71745. NUMBER 154 67 TYPE-LOCALITY.—7 mi N of Gainesville, Florida. edge very finely reflexed; surface slightly concave Collected 22 January 1947, in nest of Florida fox and rough with close, round, fine, shallow punc- squirrel, Scitirus niger L., by J. C. Moore. tures immediately behind median anterior emargi- SPECIMENS EXAMINED.—20. nation, the round punctures extending up to DATES COLLECTED.—March 12 to December 23. greatest convexity of clypeus, elsewhere with close DISTRIBUTION (Figure 18).—Paratypes. Florida elongate punctures or lines of three or four com- (19): Archbold Biological Station, Highlands bined punctures, the lines in some specimens hav- County, near Lake Placid (1), at light, 16 May ing a tendency basally to curve slightly around the 1968, O. L. Cartwright. Dunedin (2), at lights, 14 greatest convexity and appear diagonal in direc- May 1959, O. L. Cartwright. Gainesville (4): 22 tion. Above the clypeal frontal suture, which can January 1947, J. C Moore (2, includes allotype, be traced easily, the punctures are larger, elongate collected with holotype); 21 May 1970, blacklight, but shorter, and even more dense, and are round F. W. Meade (1); 30 May to 2 June 1968, black- and smaller in front of the eyes. Pronotum nearly light, R. E. Woodruff (1). Merritt Island (1), quadrate, a typical specimen measures 1.1 mm horned owl nest, 12 March 1956, Howden and wide and 0.9 mm long, with the elytra 2.0 mm in Howell. Oneco, Manatee County (1), no date, length. Base of pronotum arcuate, sides nearly Paula Dillman. Welaka, Putnam County (10), in straight, anterior angles obtusely rounded, posterior fox squirrel nests, various dates, 24 March to 23 angles very broadly rounded from sides into base, December 1947, J. C. Moore. sides and base finely margined, apparently entire REMARKS.—Ataenius sciurus is very close to A. without marginal setae but under high magnifica- brevinotus Chapin (1940:37) described from Cuba, tion appear very minutely crenate-fimbriate, the but posterior angles are not so distinctly emargi- setae about as broad as long and widely separated; nate, the base is distinctly lobed or subangulate surface everywhere densely punctate, the punctures at middle, the coarse punctures extend over the moderate in size, very slightly smaller and closer anterior disc of the pronotum, the head punctures toward the sides; slightly depressed in anterior an- are not as fine, the elytral punctures are larger and gles and two foveae are vaguely discernible each more noticeable, the lateral elytral striae are wider, side. Elytra finely dentate at shoulders, striae mod- the pronotum is more convex, and the punctures erately deep, strial punctures as wide as striae, of upper clypeus and front are of equal size and slightly crenating edges of the intervals; intervals larger than in A. brevinotus, with the lateral medially carinately convex, the inner side slightly clypeal punctures longitudinally elongate in A. concave and alutaceous, the outside slope similar sciurus. but with a row of very fine punctures near vertex The large size and wide, short pronotum separate of carina, laterally the punctures are median and this species from others found in the United States break the carina, otherwise all intervals are about and Canada. the same. The shouders show numerous very mod- erate punctures. Mesosternum broadly carinate be- tween the coxae. Metasternum shining, midline 43. Ataenius gracilis (Melsheimer) long, deep, and strong, disc with numerous, close, Oxyomus gracilis Melsheimer, 1844:137. moderate punctures separated generally by one Aphodius chilensis Solier, 1851:72. diameter or less, fine to very fine posteriorly, finely Ataenius gracilis.—Harold, 1867a:281.—Horn, 1887:79 Ar- scabrous laterally, metasternal triangle conspicuous, row, 1903:513 Schmidt, 1922:436.—Chapin, 1940:25. the finely scabrous area within uniting with the similar lateral sculpture. Abdominal sterna finely DESCRIPTION.—Length 2.8 to 3.5 mm; width 1.0 Huted along anterior margin and with a bordering to 1.3 mm. Elongate, parallel, only weakly convex, row of very close punctures along posterior margin, moderately shining; piceus; legs, anterior margin otherwise with dense, very moderate punctures gen- of clypeus, and pronotum frequently reddish. Head erally separated by their own diameters or less, at weakly convex, margin of clypeus rounded each extreme sides the punctures frequently become side of moderate emargination, sides straight to larger, shallower, alutaceous within and even run somewhat depressed, nearly right-angled genae, 68 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 18.—Distribution of Ataenius stephnni, new species, A. picinus Harold, A. brevis Fall, and A. sciurus, new species. • stephani -k picinus o brevis D sciurus together, punctures of 5th sternum are noticeably TYPE.—In Museum of Comparative Zoology. finer. Pygidium, over apical half at least, convex, TYPE-LOCALITY.—"Pennsylvania." densely and finely punctate, eroded concave area SPECIMENS EXAMINED.—450+ . frequently reduced to a basal line. Anterior femora DATES COLLECTED.—January 19 to December 20. with perimarginal groove, punctate everywhere, DISTRIBUTION (Figure 19).—Alabama: Birming- punctures very moderate in size, generally separated ham, Mobile, Selma. Arkansas: Monte Ne Br. by their own diameters, some uniting in short (Benton County), Washington County. Connecti- diagonal lines. Middle and hind femora with fine, cut: Cromwell. South Dakota: Elk Point. Delaware: uniformly distributed punctures separated by about Bridgeville, Laurel, Newark, Ship John Light twice their diameters. Posterior femoral line com- House. District of Columbia: near Riverdale. Flor- plete on middle femora, about half femoral length ida: Archbold Biological Station, Avon Park, Coco- on posterior femora. Posterior tibia without acces- nut Grove, Crescent City, Dade County, Dunedin, sory spine, apical fringe of seven short, close, uni- Gainesville, Gold Head Beach, Highlands State form setae and three longer setae at outer angle; Park, Hillsborough County, Homestead, Kissimmee, first tarsal segment longer than long spur, and Lake Letta, Lake Placid, Manatee Springs State longer than following three segments combined. Park, Marion County, Miami, Myakka City, Ocala, As is generally the case, the 5th abdominal sternum Oneco, Palm Beach County, Putnam County, Sara- is much shorter than the preceding sternum, usually sota, Tall Timbers Research Station, Tampa, about half as long, and the pygidium is longer than Winter Haven, Winter Park. Georgia: Atlanta, in the female. Beachton, Emory University. Heards Pond (Thomas NUMBER 154 69 County), Milner, Newton, Okefenokee Swamp, Sa- the elytra, and the complete posterior femoral line vannah, Ware County, Waycross. Illinois: Carbon- of the middle femora. Ataenius nocturnus is very dale, Dongola, Evanston, Heyworth, La Grange, closely allied but has only a short posterior line Starved Rock State Park, Urbana. Indiana: Grants- on the middle femora and evenly rounded elytral burg, Hovey Lake, Indianapolis, Knox County, intervals. Ataenius nocturnus is a western and Miller, Putnam County, Starke County, Vermillion southwestern species, occurring in California, Ari- County. Iowa: Atwood, Des Moines, Iowa City, zona, New Mexico, and Texas. Ataenius gracilis Mount Pleasant. Kansas: Argentine, Douglas Coun- occurs in states north of Texas into South Dakota ty, Lawrence, Osage, Topeka, Wellington. Ken- and in all eastern states north into Canada. tucky: Anchorage (Jefferson County), Barbourville, Cazier, Henderson, Louisville. Louisiana: Coving- 44. Ataenius nocturnus (Nomura) ton, Gueydan, New Orleans, Raceland, Sam Hous- ton State Park, Tallulah. Maryland: Baltimore, Saprosites nocturnus Nomura, 1943:77. Bladensburg, Chesapeake Beach, Cobb Island, Col- Ataenius gracilis.—Nakane, 1961:26 [not Melsheimer, 1844: lege Park, Hancock, Hebbville, Marlboro, Marshall 137]. Ataenius nocturnus.—Cartwright and Gordon, 1971:271. Hall, Plummers Island, Reisterstown, Takoma Park, Upper Marlboro. Michigan: Detroit, Galien, DESCRIPTION.—Length 2.8 to 3.6 mm; width 1.0 George Reserve, Gold Lodge, Paw Paw. Mississippi: to 1.3 mm. Moderately shining, piceous, legs and Biloxi, Gulfport, Vicksburg. Missouri: St. Louis, sometimes anterior margins of head and pronotum Stanton. Nebraska: Brown County, Lincoln, Platts- reddish, elongate, parallel, only weakly convex. mouth. New Jersey: Avenel, Brown Mill, Clifton, Antennae testaceous. Head convex, dypeal margin Collingswood, Emerson, Gloucester, Great Peace very finely reflexed, rounded each side of broad, Meadow, Hillsdale, Lakaway, Lakehurst, Medford, shallow, median emargination, sides very weakly New Lisbon, Ocean City, Prospertown, Riverdale, arcuate to right-angled genae; surface shining and Sea Island City, Troy Hills, West Creek, Westville, slightly uneven close to median emargination, else- Wildwood, Woodbury. New York: Catskill Mts., where with close, elongate punctures united in lines Ithaca, Peekskill. North Carolina: Bryson City, Hot except at middle oi occipital area where the some- Springs (French Broad River), Raleigh, Robeson what larger punctures are round in shape, punc- County, Tryon, Valley of Black Mountains. Ohio: tures dense everywhere, separated by less than their Adams County, Cleveland, Washington County. diameters. Pronotum nearly quadrate, averaging Oklahoma: Lake Texhoma (Willis), Marshall about 1.1 mm wide, 0.8 mm long; base and sides County. Pennsylvania: Allegheny, Boyertown, finely margined, without marginal setae, anterior Philadelphia Neck, Pittsburgh, Tinicum. South angles rounded, posterior angles very broadly Carolina: Aiken State Park, Bennettsville, Charles- rounded; surface closely punctate, the punctures ton, Clemson, Colleton County, Columbia, Earls generally moderate in size, a little finer near lateral Ford, Fish Hatchery (Oconee County), Florence, and anterior margins, a trifle larger and shallower Gramling, Pickens, Poinsett State Park, Summer- near lateral foveae, midline distinct and deeper over ville, Walterboro. Tennessee: Benton County, basal half, the punctures here practically uniting Dyersburg, Knoxville, Memphis, Reelfoot Lake. in a narrow row. Elytra averaging about 2.0 mm Texas: Atlanta, Brownsville, College Station, long and 1.2 mm wide, humeri finely dentate, Limpia Creek Canyon (Davis Mts.), Waring. Vir- striae deep, finely crenate-punctate intervals con- ginia: Arlington, Camp Pickett, Mount Vernon, vex with median row of minute punctures, mi- Nelson County, Norfolk. West Virginia: Kanawa, nutely alutaceous along inner edge, sutural interval White Sulphur. Wisconsin: Nekoosa (Wood Coun- flat with row of close, fine punctures, lateral inter- ty). Canada: Quebec: Barthierville, Granby, Joli- ette, La Trappe, Rigaud. Ontario: Ottawa. vals not noticeably different. Mesosternum broadly carinate between the coxae. Metasternum smooth REMARKS.—This very small, slender species is and shining on disc, midline strong and deep, punc- identified by the clypeus being rounded each side tures moderately coarse and close anteriorly, much of the median emargination, the elongate lines of finer posteriorly, scabriculate at sides. Metasternal punctures of the head, the cariniform intervals of triangle deep, sharply defined anteriorly, finely 70 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY alutaceous within. Abdonimal sterna finely fluted the fine punctures sometimes only in a narrow along anterior margin, surface with scattered, fine terminal band while in A. gracilis the punctures to very moderate, evenly spaced punctures gen- are scattered all over the segment. erally separated by one or two diameters, suture Ataenius nocturnus is widely distributed over in front of 5th sternum unusually and noticeably Pacific Islands. deep. Pygidium with deep basal line, disc and apical area very finely, closely punctate. Anterior 45. Ataenius sculptor Harold femora with perimarginal groove, surface with scattered, coarse, shallow punctures separated by Ataenius sculptor Harold, 1868:85 Schmidt, 1922:426. one diameter or less. Middle femora shining; scat- Ataenius oblongus Horn, 1871:286; 1887:81 Schmidt, 1922: 426. [New synonymy.] tered, very fine punctures, posterior marginal line short, one-third length of femur. Posterior femora DESCRIPTION.—Length 5.2 to 6.1 mm; width 2.4 similiar but with marginal line still shorter. Hind to 2.6 mm. Elongate-oblong, moderately convex, tibia without accessory spine, fringe of nine short, shining, black, clypeal margin and legs slightly close setae, tarsus shorter than tibia, first tarsal reddish. Head only moderately convex, finely re- segment one-fourth longer than long spur, equal flexed anterior clypeal margin broadly rounded to following three segments combined. The male each side of wide, moderately deep median emar- pygidium is longer and the 5th abdominal sternum gination, sides weakly arcuate to nearly right- is shorter than in the female. The male 5th sternum angled genae; clypeal surface smooth, shining, also tips inward anteriorly. narrowly concave at middle along anterior margin; NEOTYPE MALE (present designation).—Male, densely punctate over remainder of clypeus and USNM No. 71443. Original holotype and type front, minutely punctate along smooth anterior series were destroyed during World War II. margin but very quickly becoming moderately TYPE-LOCALITY.—Saipan. The neotype bears the coarse, a little smaller over median convexity, very following data: "Saipan I., Marianas, As Mahetog dense and a little larger between middle and genae, area, 1:I;45. Col. & Pres. by Henry S. Dybas. Lot very moderate along edge in front of the eye. 449." Pronotum approximately two-thirds as long as SPECIMENS EXAMINED.—175 + . wide, sides and base margined, minutely fimbriate- DATES COLLECTED.—March 8 to December 14. crenate under moderate magnification, the setae DISTRIBUTION (Figure 19).—Arizona: Arlington, extremely short and widely spaced, very inconspicu- Arivaca, Buckeye, Cochise County, Colossal Cave ous, anterior angles very obtusely rounded, sides Park (Pima County), Douglas, Fort Yuma, Gila practically straight, hind angles slightly emarginate, Valley, Globe, Graham Mts., Granite Reef Dam, base not quite evenly arcuate; surface closely, Hot Springs, Madera Canyon (Santa Rita Mts.), coarsely punctate everywhere except along anterior Patagonia, Phoenix, Portal, Riverside, Roosevelt margin where the punctures are gradually finer, Lake, Sabino Canyon (Santa Catalina Mts.), Saf- separated on disc by one diameter generally, very ford, Tortolita Mts. (Cottonwood Canyon), Will- dense laterally. Elytra approximately two-thirds as cox, Playa, Yuma. California: Berkeley, Colorado wide as long, humeri strongly, sharply dentate, Desert, Fresno, Holtville, Kaweah, Kern County, sides slightly but noticeably arcuate, striae strong Los Angeles, San Bernardino, Sonoma County, and deep, strial punctures crenating inner sides of Three Rivers, Visalia, Willows, Yuma. New Mex- intervals, the strial punctures separated by about ico: Albuquerque. Texas: Big Bend National Park, five times their diameters; intervals on disc moder- Lajitas, Limpia Creek Canyon (Davis Mts.). ately convex, laterally more carinately convex, with a row of very noticeable, moderate, minutely REMARKS.—Superficially, A. nocturnus (Nomura) setigerous punctures along each margin of the in- is very close to A. gracilis but differs in having the terval, closer on outside edge on disc and very close elytral intervals rounded, not subangulate as in on both sides on lateral intervals, 10th interval A. gracilis, in having the marginal line of the flat, alutaceous, with a median row of small, close, middle femur abbreviated, rarely over half the dis- shiny tubercles; shoulders closely moderately punc- tance from the knee, not complete as in A. gracilis, tate; striae becoming wider and the intervals and the 5th abdominal sternum smooth in front, NUMBER 154

FituRF. 19.—Distribution of Ataenius nocturnus (Nomura) and A. gracilis Melsheimer. • nocturnus • gracilis carinately convex with narrow alutaceous shoulder sternum close and a little smaller, with an aluta- over the apical declivity. The alutaceous shoulders ceous groove along outer third of posterior margin. are traceable forward as very thin marginal lines Pygidium with shining, finely, closely punctate to near the middle of the elytra. Mesosternum apical lip, the disc rough and unusually deeply shagreened as in most species, finely carinate be- eroded. Anterior femora with perimarginal groove, tween coxae. Metasternum with long, fine, rather surface densely, scabrously punctate. Middle femora shallow midline, disc densely, moderately coarsely densely, moderately punctate with three or four punctate, the punctures extending outward to wide, coarse setigerous punctures at knee and complete, scabrous area at sides, metasternal triangle rather strong posterior marginal line. The posterior shallow, finely scabrous within. First visible ab- femora as in the middle femora but the punctures dominal sternum with rather wide, alutaceous, not dense, separated by one to two diameters, pos- posterior marginal lines. All remaining sterna terior line strong, deep, and complete. Posterior fluted along anterior margin, the fluting of the first tibial apical fringe of eight short, close, heavy very fine, of the next quite long, of the 4th sternum setae, a very strong accessory spine, and an inter- very wide and long and longer at sides, those of the vening seta between spine and spurs. Long spur 5th sternum at middle as long as at sides on 4th; about one-fourth shorter than the very long surface of the two widest sterna convex, densely metatarsus which is as long as the following four punctate from side to side, very moderate in front segments combined. The 4th and 5th sterna are to moderately coarse along posterior where they relatively shorter and the pygidium longer in the almost touch and form a marginal line; punctures male. of 4th sternum more moderate in size with mar- HOLOTYPE.—In Harold collection, Museoim Na- ginal row very close and smaller; punctures of 5th tional d'Histoire Naturelle. [Type of A. oblongus 72 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY Horn in the Leconte Collection, Museum of Com- deep, shining, with deep strial punctures slightly parative Zoology, No. 8097.] crenating the intervals; intervals with very nar- TYPE-LOCALITY.—Colombia. [Type-locality of row, flat, alutaceous shoulder, the middle evenly, oblongus: California.] strongly convex on disc, more sharply convex over SPECIMENS EXAMINED.—Two, plus numerous apical declivity and carinately convex over lateral Mexican specimens. intervals; intervals very minutely, closely punctate DATES COLLECTED.—August 17 to September 21, under high magnification; humeri coarsely closely in Mexico. punctate, as in most species the crenations of the DISTRIBUTION (Figure 20).—Arizona: Nogales. intervals are always a little posterior to the strial California: "California." punctures rather than exactly opposite. Mesoster- REMARKS.—This species is easily recognized num shagreened, surface finely alutaceous, with among United States specimens by its large size, close, fine, short, appressed hair; carinate between emarginate posterior pronotal angles, and dense the coxae. Metasternum with long, strong, deep punctures of head and pronotum with rather midline, deeper at ends, especially at anterior end; roughly sculptured elytra. disc shining, closely, moderately punctate, sepa- rated by their diameters or less, a little finer 46. Ataenius woodruffi, new species anteriorly, outward to sides quickly scabrously punctate, the poorly developed metasternal triangle DESCRIPTION.—Holotype: Length 6.4 mm; width more finely scabrous. First two visible abdominal 2.9 mm. Oblong, moderately convex, shining, black sterna with fine posterior marginal lines, last four with faint tinge of red, clypeus and legs only with fluting along anterior margin, the fluting slightly more reddish. Head moderately convex, longer on each following sternum, that of 5th finely reflexed clypeal margin broadly rounded sternum half as long as sternum at middle; surface each side of moderate median emargination, sides otherwise closely, coarsely, shallowly punctate from nearly straight to wide-angled genae, about 125°; side to side and very finely alutaceous even in the surface feebly, transversely wrinkled anteriorly, shallow punctures. Pygidium with narrow, shining clypeus over and above convexity very finely, apical margin; disc deeply eroded. Anterior femora closely punctate throughout, punctures generally with perimarginal groove, surface densely punctate separated by their diameters, and with a group of with moderately coarse punctures. Middle and hind about twenty coarse, close, intermixed punctures femora closely, moderately coarsely punctate, pos- extending down from base on each side of con- terior marginal lines deep and complete. Apical vexity, separated by one to two times their diam- fringe of posterior tibia with a close group of five eters; front with transverse band of close, coarse short setae and a strong accessory spine. Long punctures mostly separated by half their diameters spur shorter than metatarsus but longer than the or less; the genae are unusual, being flat, finely middle three tarsal segments combined. Sex not alutaceous, and extending posteriorly into a deep determined but probably a female. hole or pit to the eye. Pronotum weakly convex, HOLOTYPE.—USNM 71746. length 1.8 mm, width 2.6 mm, anterior angles widely obtuse, posterior angles slightly emarginate, TYPE-LOCALITY.—The unique holotype taken at base somewhat angularly arcuate, sides and base Flagler Beach, Flagler County, Florida, 18 May 1954, in mosquito light trap, R. E. Woodruff col- margined, edge entire at sides, posterior angles and lection. base fimbriate-crenate, the crenations fine, the setae fine and short, mostly separated by more than their DISTRIBUTION.—See Figure 12. length; surface with mixed minute and coarse punc- REMARKS.—The elytra of Ataenius woodruffi are tures, the coarse punctures crowded approaching similar to those of A. impiger Schmidt (1916:104) the angles from middle, disc much less crowded, and A. laterigranulatus Balthasar (1941:166), but irregularly separated on disc by less than one to the very peculiar and unique form of the genae several times their diameters, a little finer at an- will determine the species at once. It is also our terior margin. Elytra 4.1 mm long and 2.9 mm largest species. I name it in honor of R. E. Wood- wide, humeri sharply dentate, elytral striae wide, ruff, who obtained the only known specimen. NUMBER l.r>4 73

FIGURE 20 Distribution of Ataenius simulator Harold, A. inquisitus Horn, and A. sculptor Harold • simulator • inquisitus • sculptor

47. Ataenius robustus Horn punctures on the disc sometimes elongate. Elytra convex, short, sides arcuate, four-fifths as wide as Ataenius robustus Horn, 1871:285; 1887:80—Schmidt, 1922: long, humeri strongly dentate, striae strong, inter- 427. vals flat, densely, moderately punctate as on head DESCRIPTION.—Length 3.8 to 4.7 mm; width 1.9 and pronotum, 9th interval strongly convex, punc- to 2.4 mm. Oblong-ovate, convex, shining, black, tures minutely setigerous with the setae most no- legs reddish. Head moderately convex, edge of ticeable laterally and over the apical declivity. clypeus finely reflexed, broadly rounded each side Mesosternum shagreened with fine, alutaceous of shallow median emargination, sides feebly arcu- sculpture and very fine, short, appressed hair, rarely ate to sharply rounded, right-angled genae; surface broadly, weakly convex between the coxae. Meta- of clypeus everywhere closely, uniformly, moder- sternum short, midline moderately deep, disc fre- ately punctate, the punctures generally separated quently transversely depressed, especially in males, by less than their diameters, those of the frontal- surface shining, punctures variable in size, usually occipital area a trifle smaller and a little closer. separated by one or two times their diameters, simi- Pronotum about three fifths as long as wide, an- lar but closer punctures outward to scabriculate terior angles obtusely rounded, posterior angles area at sides, the metasternal triangle shallow, more broadly, evenly rounded, sides and base margined, transverse than in most species, sometimes absent. the edge minutely crenate-fimbriate, the setae a First visible abdominal sternum with posterior little more conspicuous around posterior angles; marginal line, remaining four sterna finely fluted surface everywhere densely, moderately punctate, along anterior margin, punctate from side to side, 74 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY 2nd sternum with close, very moderate punctures margin slightly angulate to subdentate but often over anterior two-thirds, the punctures fine at mid- appearing rounded each side of wide, moderate, dle, smooth and impunctate posteriorly, punctures median emargination, sides straight or weakly arcu- of remaining sterna finer and less close. Pygidium ate to right-angled genae; clypeal surface trans- with shining apical lip, disc roughly alutaecous, versely, coarsely wrinkled, the wrinkles usually flattened to somewhat convex, not deeply eroded. broken in part into elongate tubercles, front with Anterior femora with perimarginal groove, surface transverse band of very moderate punctures sepa- shiny, finely, closely punctate. Middle and hind rated in general by about their diameters; genae femora with scattered, fine punctures, fewer along with four or five noticeable setae. Pronotum con- anterior margin, two or three coarse, setigerus vex, three-fourths as long as wide, anterior angles punctures at the knee, posterior marginal line, obtusely rounded, posterior angles more broadly fine, not deep, but seen from rear, slightly less than rounded, the slightly arcuate sides usually slightly half the length of the femur. Posterior tibial apical sinuate, base strongly margined, edges fimbriate- fringe of four setae, accessory spine, and an inter- crenate, the crenations weak, the setae moderately vening seta between spine and spurs. Males have long, separated laterally by a little less than their the anterior spur hooked at apex, the 4th and 5th length; surface with mixed punctures, everywhere abdominal sterna about half as long as the pre- with fine, evenly distributed punctures separated ceding sternum, and the pygidium comparatively by one or two diameters and very coarse punctures much longer than in the female. unevenly distributed, mostly in the anterior and HOLOTYPE.—In Museum of Comparative Zool- posterior angles with a few scattered across the ogy, LeConte Collection. base and above a smooth space at middle of sides. TYPE-LOCALITY.—"Missouri." Elytral width about two-thirds the length, convex, SPECIMENS EXAMINED.—35. sides slightly arcuate, humeri finely, weakly den- DATES COLLECTED.—March 9 to June 27. tate; striae strong, the deep strial punctures DISTRIBUTION (Figure 13).—Arkansas: Carlisle, slightly crenating the inner margins of the moder- Hope, Little Rock, Washington County. Illinois: ately convex intervals, surface with irregular, mar- Bond County, Elizabethtown. Iowa: Davis County, ginal row of minute punctures along each side, Iowa City, Keokuk, Mt. Pleasant, Scott County. lateral intervals not different. Mesosternum sha- Kansas: Onaga, Topeka. Missouri: Dardene Prairie, greened, with very fine surface sculpture and ex- St. Louis, Sedalia. Nebraska: Fairmont, Lincoln, tremely fine, short, decumbent hair, not strongly West Point. New Mexico: Mesilla (listed by Fall carinate between the coxae. Metasternum shining, and Cockerell, 1907:186). Oklahoma: Stillwater, midline fine, only moderately impressed, very finely Vinita. South Dakota: White Lake. Wisconsin: punctate, with punctures generally separated by Lamont. about two or three times their diameters, a little REMARKS.—Ataenius robustus is unusual in hav- rough sculpture at extreme sides, metasternal tri- ing the entire upper surface—head, pronotum, and angle elongate and deepest along posterior margin. elytra—practically uniformly, closely, moderately First visible abdominal sternum with fine posterior punctate. The very short metasternum is notable marginal line, remaining lour sterna finely fluted also. along anterior margin, the fluting longer on suc- cessive sterna, that of middle sternum slightly longer at sides, of the 5th sternum longer at middle; 48. Ataenius simulator Harold surface almost impunctate at middle, a few coarse,

PLATE lfe shallow, setigerous punctures at sides; 5th sternum with a row of three or four close, moderate, more Ataenius simulator Harold, 1868:85.—Cartwright, 1964:103. conspicuously setigerous punctures each side. Psammodius schwarzi Lincll, 1896:721.—Cartwright, 1964:103. Ataenius schwarzi Brown, 1928:307. Pygidium with smooth, apically wide lip, disc finely, scabrously eroded, with a few scattered, long DESCRIPTION.—Length 3.7 to 4.9 mm; width 1.6 hairs. Anterior femora with perimarginal groove, to 2.3 mm. Oblong, convex, shining, dark castane- anterior and posterior margins bearing long, fine ous to piceous. Head convex, finely reflexed clypeal setae, surface shining, finely punctate, the punc- NUMBER 154 75 tures separated by two or more diameters; anterior Rock State Park, Raleigh, Shell Landing (Carteret tibiae broader than usual. Middle and hind femora County). South Carolina: Aiken, Allendale, Black- smooth, shining, very finely punctate, three or four ville, Charleston, Clemson, Clinton, Colleton coarse setigerous punctures at knee, without pos- County, Columbia, Florence, Folly Beach, Hunting terior femoral line. Posterior apical tibial fringe, Island, Isle of Palms, Lancaster, Litchfield Beach, seven or eight rather short setae, short, triangular Myrtle Beach, Paris Island, Pickens, Ridgeland, accessory spine and an intervening seta between Ritter, Saluda County, Sandy Springs, Summerton, spine and spurs. Posterior metatarsal segment Walterboro, Yemassee. Tennessee: Burrville, Card- shorter than long spur, longer than following three well Mtn. (Warren County), Citco, Cookeville, segments combined. Male pygidium much longer Crossville, Franklin County, Harrison Bay State than that of the female. Park (Hamilton County), Knoxville, Lincoln HOLOTYPE.—In Museum National d'Histoire County, Loretto, Meigs County, Monroe County, Naturelle. Ooltewah, Smyrna. Utah: Cedar City. Virginia: TYPE-LOCALITY.—Mendoza, Argentina. Camp Pickett, Chatham, Cumberland County, SPECIMENS EXAMINED.—1000 +. Gloucester, Hampton, Holland, Jamestown, Lang- DATES COLLECTED.—January 12 to December 25. ley Field, Norfolk, Prince Edward County, Sussex, DISTRIBUTION (Figure 20).—Alabama: Auburn, Williamsburg. Crossville, Dadeville, Dale County, Dothan, Escam- REMARKS.—This species is rarely if ever a dung bia County, Fairhope, Florala, Florence, Grand feeder. It is attracted to light, sometimes in enor- Bay, Gulf State Park, Mobile, Monte Sano State mous numbers. I once collected about 275,000 Park, Repton (near Helena), Theodore. Florida: specimens in a trap light in a single night. The Arcadia, Archbold Biological Station, Archer, species seems to be spreading westward and north- Bradenton, Chipley, Clermont, Daytona Beach, ward from southeastern United States. I have seen Dunedin, Dunnellon, Flagler Beach, Gadsden specimens from several countries in South America County, Gainesville, Glen St. Mary, Highland and from Australia. Hammock State Park, Inglis, Jackson County, Jack- Diagnostic characters include the very distinct, sonville, Jay, Jefferson County, Kissimmee, La Belle, coarse transverse granules covering the clypeus, Lake Alfred, Lake County, Lake Letta, Lake Wales, the few very coarse punctures near pronotal angles Loch Harbor, Longwood, Manatee Springs State and base of pronotum, and the wide middle and Park, Marion County, Mayport, Monticello, Ocala, hind femora without posterior marginal lines. Oneco, Orlando, Pensacola, Punta Gorda, Quincy, Jerath (1960:77) described the larva under the Saint Andrews State Park, Sanford, Santa Rosa name A. schwarzi (Linell). County, Seminole County, Silver Lake Recreation Area (Leon County), Tallahassee, Tall Timbers Research Station, Tampa, Wachulla, West Palm 49. Ataenius erratus Fall Beach, Winter Haven, Winter Park, Zolfo Springs. Ataenius erratus Fall, 1930:96.—Cartwright, 1948:149. Georgia: Americus Ashburn, Atlanta, Augusta, Beachton, Brookhaven (De Kalb County), Demor- DESCRIPTION.—Length 4.4 to 5.9 mm; width 1.9 est, Dougherty County, Experiment, F. D. Roose- to 2.5 mm. Elongate, oblong, piceous-black, shin- velt State Park, Hinesville, Manchester, Monticello, ing, more convex posteriorly. Head weakly convex, Nashville, Newton, Peach County, Ranger, Smith- clypeus broadly rounded each side of wide, shallow, ville, Thomas County, Tifton, Upson County, median emargination, sides nearly straight to right- Valdosta, Ware County, Waycross. Maryland: Belts- angled genae, edge finely reflexed, clypeal surface ville, Marlboro, Scotland (St. Marys County). Mis- finely, evenly punctate, the punctures separated by sissippi: Brooklyn, Camp Shelby, Gulf port, Horn about twice their diameters, in some individuals Island, Keesler Field, Lucedale, near Ludlow more or less vague transverse rugulae anteriorly, (Leake County), Mount Olive, Pearl (Rankin front with band of scattered, slightly larger punc- County). North Carolina: Balsam, Camp Lejeune, tures usually less close at middle. Pronotum only Catawba County, Duplin County near Calypso, slightly convex, one-third wider than long, anterior Edenton, Faison, Franklin, Geston Lake, Hanging angles rounded, posterior angles broadly rounded 76 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY from arcuate sides into the slightly sinuate base, The female anterior tibial spur is straight, not lateral and basal margin moderate, fringe of mod- incurved, the abdominal sterna are convex, and the erately long setae slightly crenating the edge, the pygidium is relatively shorter. setae separated by less than their lengths; surface HOLOTYPE.—Museum of Comparative Zoology, with mixed moderately coarse and very fine punc- No. 24769. tures throughout, discal area with irregularly TYPE-LOCALITY.—Enterprise, Florida. spaced, coarse punctures separated by less than one SPECIMENS EXAMINED.—375 +. to several times their diameters, closer, more evenly DATES COLLECTED.—May 31 to August 22. spaced at sides. Elytra slightly more than two and DISTRIBUTION (Figure 10).—Alabama: Auburn. one-half times as long as pronotum, humeri not no- Florida: Crescent City, Gainesville, Haw Creek, ticeably dentate, convex, the margins not visible Hillsborough County, Marion County, Ocala, Tal- from directly above, slightly wider than pronotum; lahassee, Tall Timber Research Station, Williams striae fine, finely punctate, weakly crenating the Landing (Tayior County). Georgia: Arlington, moderately convex intervals, surface of intervals Beachton, Macon, Norwood, Savannah. Mississippi: with scattered, very fine punctures and minute, Gulfport. North Carolina: Swan Quarter. Ohio: alutaceous sculpture, lateral intervals not different Champaign County. South Carolina: Aiken, Ander- from others. Mesosternum without noticeable son, Beaufort County, Blackville, Charleston, Clem- carina between coxae. Metasternum with disc shal- son, Clinton, Florence, Gramling, Hilton Head, lowly, widely concave, midline not impressed, sur- Marion, Moncks Corner, Sandy Springs, Silver- face shining, smooth, with scattered fine punctures street, Tigerville, Yemassee. Texas: Bishop (Nueces separated usually by three or four times their diam- County). eters, minutely alutaceous outward to a little REMARKS.—Ataenius erratus Fall is a little above scabrous sculpture at extreme sides, metasternal average in length, has relatively short pronotum triangle weak and inconspicuous. Abdominal sterna and long elytra, has unusually long tarsi, has more flattened medially, minutely alutaceous, with scat- setae in the posterior tibial fringe, and is one of tered, very fine punctures, generally separated by the few species with the accessory spine close to the three or four times their diameters, slightly larger spurs without an intervening seta. The posterior laterally, the last two sterna narrowly scabrous at femoral line of the middle femora is very unusual extreme sides, very finely fluted along anterior mar- in arching forward away from the margin. Most gins as usual, 5th sternum about two-thirds as long specimens have been collected in South Carolina, at middle on preceding sternum. Pygidium with Georgia, and Florida. rather wide, convex, apical lip, eroded area roughly The larva of A. erratus was described by Jerath sculptured. Anterior femora with perimarginal (1960:77). groove, surface finely alutaceous with scattered, fine-to-moderate punctures; tibial spur of male incurved at tip. Mesofemora minutely alutaceous, 50. Ataenius inquisitus Horn scattered, very fine punctures, three setae at knee, Ataenius inquisitus Horn, 1887:81.—Schmidt, 1922:424 Fall, posterior marginal line complete, decreasing in 1930:97—Cartwright, 1948:149. depth to trochanter and arching forward and widening in an unusual way. Metafemora similar DESCRIPTION.—Length 3.9 to 4.9 mm; width 1.7 to middle femora but posterior femoral line only to 2.0 mm. Oblong, moderately convex, shining, one-half to two-thirds distance to trochanter and dark red-brown to piceous, anterior of head and not arching forward at inner end. Middle and pos- legs reddish, antennae testaceous. Head moderately terior tarsi longer than tibiae. Posterior tibial convex, clypeus broadly rounded each side of wide, fringe of eight to ten close, moderately long setae, shallow, median emargination, sides weakly arcuate accessory spine very short, close to spurs without to sharply rounded genae, the genae a trifle more intervening seta. First segment of posterior tarsus than right-angled, edge very finely reflexed; surface longer than long spur, about equal to following transversely wrinkled anteriorly, usually over the three segments combined. greatest convexity, very finely, closely punctate above the wrinkles, punctures generally separated NUMBER 154 77 by about twice their diameters. Pronotum moder- TYPE-LOCALITY.—"Southwestern Texas." ately convex, averaging about 1.8 mm wide by 1.1 SPECIMENS EXAMINED.—22+. mm long, all angles obtusely rounded, sides weakly DATES COLLECTED.—April 26 to November 15. arcuate, sides and base strongly margined, fimbriate- DISTRIBUTION (Figure 20).—Arizona: Paradise. crenate, the setae short to minute, longest at an- Wisconsin: "Wisconsin." Texas: Alpine, Austin, terior angles, basally minute, crenations distinct Big Bend National Park, Brownsville, Chisos Mts., around posterior angles and base; surface punctures Columbus, Cypress Mills, Dallas, Davis Mts., Devils mixed, very fine everywhere, larger punctures scat- River, Enchanted Rock, Handly, Houston, Juniper tered over anterior disc where they may be fine to Canyon, Limpia Canyon (Fort Davis), Menard, very moderate, outward to sides and base gradually Nueces River (Zavalla County), San Diego. closer and much coarser, practically contiguous in REMARKS.—The pattern of punctures on the the anterior and posterior angles. Elytra convex, head, pronotum, and metasternum and the lack of averaging about 2.8 mm long by 1.9 mm wide, a fringe seta between the accessory spine and spurs humeri moderately dentate, striae moderately separate this species from related species in the deep, strial punctures crenating inner margin of United States. Ataenius chapini Hinton (1937a:3), weakly convex intervals, intervals with a row of from Panama, is very closely related, the two species minute punctures along each side, intervals a little having an uncommon form of male aedeagus (see more convex and striae wider over apical declivity. Figure 24a-d). It also bears a very close superficial Mesosternum shagreened with fine alutaceous similarity with A. nugator Harold (1880:41). sculpture and fine, short, appressed hair, very weakly carinate between the coxae. Metasternum shining, midline strong and deep, disc smooth but 51. Ataenius griffini, new species with minute, scattered punctures, bordered pos- DESCRIPTION.—Holotype Male: Length 3.5 mm; teriorly by a row of close coarse punctures which width 1.5 mm. Dark reddish brown, shining, con- turns outward to sides behind the middle coxae, vex, oblong. Antennae dark castaneous. Head con- becoming two or three punctures wide near side vex; clypeus rounded and slightly angulate but not where they merge with very shallow punctures and dentate each side of deep median emargination, rough alutaceous sculpture, metasternal triangle sides weakly arcuate to right-angled genae, margin smooth, not deep or well defined. Abdominal sterna very finely reflexed, arched upward at middle leav- closely, coarsely punctate from side to side, a little ing a flat, closely, minutely punctate surface be- finer at middle and on 5th sternum, fluted along tween the two edges; entire head surface smooth anterior margins. Pygidium with shining apical except for very fine, uniformly distributed punc- lip, disc roughly eroded. Anterior femora with peri- tures throughout, the punctures separated by about marginal groove, surface smooth in front, pos- three to five times their diameters. Pronotum con- teriorly with well-separated, moderate, elongate vex, middle of side margins not visible from punctures. Middle and hind femora smooth, shin- directly above, length 0.9 mm and width 1.4 mm, ing, minutely punctate, one or two finely setigerous, anterior angles obtuse, hind angles distinct, not coarse punctures at knee, strong posterior marginal broadly rounded, sides and base strongly margined, line half length of femur inward from knee, middle not distinctly crenate, marginal setae very moder- femora have also a few coarse punctures along an- ate, separated by their own length; surface with terior margin at knee. Posterior tibiae with fringe mixed fine and scattered moderate punctures, the of five setae in a group, strong accessory spine close latter separated by one to four or five times their to spurs without an intervening seta. First posterior diameters, absent over median anterior third of tarsal segment longer than the long spur, longer disc. Elytra convex, elongate-oval, width 1.5 mm, than following three segments combined. Males length 3.5 mm, humeri finely dentate, striae fine, have the terminal segment and the pygidium rela- moderately deep, fine strial punctures widely sepa- tively longer than in the female. rated, very weakly crenating the convex intervals, HOLOTYPE.—No. 3612, Academy of Natural Sci- some minute, scattered punctures visible only ences of Philadelphia, Horn Collection. under high magnification, lateral intervals not dif- 78 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY ferent; lateral and apical elytral margins with very The species is named after its collector, Charles inconspicuous, extremely fine, extremely short, W. Griffin of Corpus Christi, Texas, who has col- widely separated setae. Mesosternum carinate be- lected several other rare and interesting scarabs in tween the coxae. Metasternum smooth, shining, wood-rat nests and animal burrows. midline fine, deeper at anterior end, disc with scat- tered, widely separated, minute punctures, a few shallow, moderate punctures at sides, metasternal 52. Ataenius aequalis Harold triangle large, deep, alutaceous within. Abdominal Ataenius aequalis Harold, 1880:40—Schmidt, 1922:435. sterna shining, punctate from side to side, the punctures moderate in size, slightly smaller at mid- DESCRIPTION.—Length 3.6 to 5.0 mm; width 1.7 dle, generally separated by three or four times to 2.0 mm. Oblong-oval, convex, moderately shin- their diameters, finely fluted along anterior margins ing. Head moderately convex; clypeus broadly, as usual, fluting of 5th sternum at middle much moderately emarginate anteriorly, rounded each deeper and one-third the length of sternum, 4th side of emargination, sides nearly straight to right- sternum strongly narrowed at middle, about half angled genae, margin finely reflexed, noticeably as long as at sides, 5th sternum with posterior row slightly wider each side of emargination; clypeus of close, shallow, coarse punctures bearing long, with weak, transverse rugulae, the rugulae smaller fine hair. Eroded area of pygidium also bearing ten but still visible over greatest convexity to frontal long, mostly marginal, hairs. Anterior femur with area, which is closely, very finely to finely punctate perimarginal groove, surface smooth and shining. basally. Pronotum rectangular, convex, anterior Middle and hind femora similarly smooth and and posterior angles obtusely rounded, very slightly shining, without posterior marginal groove. Hind emarginate or sinuate behind posterior angles, tibial fringe of eight close, short setae; short, tri- sides and base margined, crenate-fimbriate, crena- angular accessory spine and single seta between tions more noticeable laterally, setae noticeable, accessory spine and spurs; first tarsal segment a twice as long as distance between them; surface trifle shorter than long spur, longer than following with close, mixed moderate and very fine punctures three segments combined. throughout, the larger punctures generally sepa- rated by their diameters or less, a little smaller HOLOTYPE.—USNM 71747. anteriorly, a little closer in pronotal angles. Scutel- TYPE-LOCALITY.—San Patricio County, Texas, lum without punctures. Elytra two and one-half near junction of Texas Highway 9 and U.S. 77. times length of pronotum, convex, weakly shining, SPECIMENS EXAMINED.—Eight. minutely alutaceous under high magnification; DATE COLLECTED.—August 16. humeri finely dentate; striae fine, deep, crenate- DISTRIBUTION (Figure 11).—Para types. Texas punctate, crenations about width of striae, intervals (7): "Texas" (1, from Charles Schaeffer Collection evenly convex, especially convex over apical de- and mistakenly designated as a para type of Ataenius clivity where striae are wider, intervals not differ- convexus by Mark Robinson). San Patricio County ing laterally except that the 9th is higher and more (6): collected with holotype in an animal burrow, prominent posteriorly than the 10th, the latter is probably of an armadillo, 16 August 1969, Chas. flatter with a median row of very fine punctures W. Griffin (5); same locality and date, under cow and intervening tubercles near posterior end. dung (1). Mesosternum shagreened, with very fine, short, REMARKS.—Ataenius griffini resembles A. con- decumbent hair, carinate between coxae. Meta- vexus Robinson very closely, and the two may be sternum with moderately deep midline, disc shin- found together—one specimen of A. convexus was ing, punctures very fine, uniformly distributed, taken in the same burrow with six specimens of separated by two to four times their diameters, d- griffini. Ataenius convexus, however, has larger, finely scabriculate at extreme sides, metasternal closer, more evenly distributed pronotal punctures, triangle nearly smooth, moderately deep. Abdomi- shorter elytra with a conspicuous fringe of setae, nal sterna shining but finely alutaceous under high and the abdominal sterna are smooth and prac- magnification, quite uniformly, shallowly, mod- tically impunctate at middle. The male aedeagi erately punctate, the punctures separated by their are very similar also (Figure 24e-h). MUMBKR 154 79 diameters, fluted along anterior margins, fluting wrinkled anteriorly, finely, closely punctate above of 5th sternum about one-third total length, sur- greatest convexity, the punctures generally sep- face very finely punctate over remaining area. arated by about their own diameters, frontal area Pygidium in most cases with a fine longitudinal with a transverse scattering of very moderate punc- carina dividing the eroded area, apical borders tures two or three times as large as the fine clypeal convex, shining, minutely punctate, wider at mid- punctures. Pronotum approximately one-third dle. Profemora with perimarginal groove, shining wider than long, moderately convex, base very but with close, coarse punctures except at inner weakly sinuate, sides and base with strong mar- anterior angle. Middle and hind femora shining, ginal line, edge crenate-fimbriate, the crenations very finely punctate, the punctures separated by scarcely visible, the setae moderately long anterior- three or four times their diameters, posterior ly, the length decreasing slightly to basal sinuation, femoral line apparently lacking, but actually visible suddenly extremely short then gradually longer about half the length of the femur when viewed again opposite the scutellum; surface with mixed from behind. Posterior tibial fringe with a group very fine and moderately coarse punctures, the fine of five setae, a very short accessory spine one- punctures quite uniformly distributed throughout, half the length of the fringe setae, and an in- the coarse punctures everywhere but a little smaller tervening setae between spine and spurs; first anteriorly at middle, somewhat fewer in number tarsal segment subequal to long spur and a trifle at sides and on middle disc lengthwise front to longer than following three segments combined. base, separated by about their diameters in areas of greatest density. Elytra about one-third longer LECTOTYPE (present designation)—In Museum than wide, moderately convex, sides subparallel, National d'Histoire Naturelle. humeri very moderately dentate; striae strong, TYPE-LOCALITY.—Colombia, "Ambalema." strial punctures deep, slightly crenating inner mar- SPECIMEN EXAMINED.—One. gins of the very weakly convex intervals, intervals DATE COLLECTED.—Unknown. with minute, scattered punctures, lateral intervals DISTRIBUTION (Figure 21).—"Louisiana." not noticeably different from the others. Meso- REMARKS.—This species is included in the sternum shagreened with minute alutaceous sculp- present paper on the basis of a single specimen in ture and fine, short, recumbent hairs, weakly cari- the Naturhistorisches Museum, Vienna, Austria, nate between the coxae. Metasternum smooth and bearing the label "Louisiana, N. America." It is shining, midline long, strong, deep, ending an- very similar to A. integer and A. platensis but may teriorly in a deeper pore, some rather widely scat- be separated by characters given in the key. The tered, minute punctures over disc and outward to male aedeagus is quite different from A. platensis, sides, extreme sides with narrow rugose area of as shown in Figure 24i-/. coarse, shallow, ill-defined punctures, metasternal triangle smooth and not sharply defined. Abdomi- nal sterna finely fluted along anterior margin, more 53. Ataenius integer Harold widely and deeply so on posterior sternum, coarse- Ataenius integer Harold, 1868:86. ly, closely punctate at sides, gradually finer toward Ataenius platensis.—.Schmidt, 1922:434 [not Blanchard, 1846: middle where the punctures may be very fine or 185]. even absent; pygidium with wide, convex, shining DESCRIPTION.—Length 3.6 to 4.8 mm; width 1.5 apical lip, minutely punctate; remainder of sur- to 1.9 mm. Oblong, shining, black with anterior face deeply, roughly eroded. Anterior femora with margins of pronotum, legs and usually most of the perimarginal groove, shining, finely but not closely clypeus reddish brown. Antennae light yellow. punctate anteriorly, much more coarsely punctate Head moderately convex, clypeus broadly rounded posteriorly; first tarsal segment as long as next each side of moderate, median emargination, sides two segments combined. Middle and hind femora slightly arcuate to sharply rounded, slightly more with scattered, minute punctures, shining, pos- than right-angled genae, head margin finely re- terior femoral line about half the length of the flexed, very slightly wider and higher each side of femur on middle femora, about one-fourth on the median emargination; surface finely, transversely posterior femora. Posterior tibial fringe a group 80 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 21.—Distribution of Ataenius fattigi Cartwright and A. aequalis Harold. • fattigi it aequalis of four close, moderate setae, an accessory spine REMARKS.—Ataenius integer Harold is very simi- nearly as long, and a single seta intervening be- lar to A. platensis, and some authors consider them tween the spine and spurs; first tarsal segment the same. Ataenius integer, however, has mixed longer than long spur, about equal to following coarse and fine occipital punctures and the larger three segments combined. The spur of the anterior pronotal punctures are quite evenly distributed tibia is bent downward at the tip in the male, the even in the anterior angles. They are a little smaller 4th abdominal sternum is narrowed and much in the anterior discal area of the pronotum but' shorter at the middle, and the pygidium is longer still noticeable. In A. platensis the punctures of with a wider apical lip than in the female. the occipital band are fine and uniform in size, about as in the anterior discal area of the pro- LECTOTYPE.—In Museum National d'Histoire notum where coarser punctures are lacking. Some Naturelle. specimens of A. spretulus could be confused with TYPE-LOCALITY.—Brasilia. A. integer but may be recognized by the smooth SPECIMENS EXAMINED.—16. profemur and patch of metasternal setae in the DATES COLLECTED.—May 10 to August 22. male. Ataenius integer has the profemur strongly DISTRIBUTION (Figure 3).—Florida: Apopka, punctate, the punctures doubled or crescent- Archbold Biological Station (Lake Placid), Avon shaped and more elongate than in A. platensis. Park, Blatt (3i/2 mi SE), Chipley, Gainesville, Hills- The fovea on the ventral side of the front tibia in borough, Miami, Orlando, Panama City, Parrish, A. integer is larger and deeper than in A. platensis Tallahassee, Wewahitchka, Winter Haven. Texas: and parallels the outside edge, i.e., is directed in- Houston, Kerrville. ward toward the middle of the tibia. NUMBER 154 81 54. Ataenius stephani, new species marginal groove; tibiae crenate above the three

PLATE 3a strong, evenly spaced lateral teeth; anterior spur bent inward at tip. Middle and hind femora DESCRIPTION.—Holotype Male: Length 5.1 mm; smooth, shining, with scattered, very minute punc- width 2.2 mm. Oblong, piceous, shining, moder- tures, without posterior marginal line. Middle ately convex, legs reddish brown. Head very mod- tarsi slightly longer than tibiae, posterior tibiae erately convex; clypeus rounded each side of and tarsi about equal in length. Posterior tibial moderately deep emargination, sides finely reflexed, fringe with a group of five setae, short accessory straight to obtusely rounded, nearly right-angled spine, and an intervening seta between spurs and genae, surface very finely, transversely wrinkled accessory spine. Long spur, first tarsal segment, anteriorly, upper clypeus and frontal area evenly, and three following segments combined are sub- very finelypunctate , the punctures separated by twice equal in length. their diameters, occipital area with scattered, slightly Allotype Female: Length 5.1 mm; width 2.2 mm. larger punctures separated by one to six or more I find practically no sexual differences except that times their diameters. Pronotum 2 mm wide and the spur of the anterior tibia is not bent inward 1.4 mm long, moderately convex, sides mostly in- at the tip, the 5th sternum is comparatively longer, visible from directly above, anterior angles round- the lip of the pygidium only half as long as the ed, posterior angles very broadly rounded, sides 5th sternum, and the eroded area of the pygidium and base arcuate, marginal line strong and deep, narrower at middle than in the male. marginal setae moderately long, separated laterally HOLOTYPE.—USNM 71748, collected with allo- by about their own lengths, gradually shorter and type female at black light between 2 and 16 Sep- closer posteriorly and around base, only very tember 1969 by K. Stephan. slightly crenating the edge; surface with mixed TYPE-LOCALITY.—Tucson, Arizona. punctures, very finely, evenly punctate over an- SPECIMENS EXAMINED.—365. terior medial area and narrowly so inside marginal DATES COLLECTED.—April 9 to September 19. groove, elsewhere with additional scattered, very DISTRIBUTION (Figure 18).—Para types, all except coarse punctures, these fewer and more irregularly a single specimen collected by K. Stephan, mostly spaced in middle basal area, more concentrated at black light. Arizona (364): Colossal Cave Park, laterally. Scutellum normal. Elytra 3.2 mm long Pima County (12), 4 August 1970. Nogales (1), and 2.2 mm wide, sides convex, humeri finely den- 7 September 1957, T. R. Haig. Santa Catalina tate, striae strong, deep, finely punctate, weakly Mountains (199): Bear Canyon (1), 6 August crenating the weakly convex intervals, surface 1970; foothills (183), 21 June, 6 July, 19 August shining with scattered, minute punctures separated 1970; Molino Canyon (1), 26 August 1969; Pima generally by about three times their diameters, Canyon (14), 28 August 1970. Tucson (152), 6 lateral intervals not different. Mesosternum cari- April, 19 May, 11, 21 August 1968, 11 July, 26 nate between the coxae. Metasternum shining, August, 2 to 19 September, 1969, 1 May, 21. 28 midline strong, ending in a deeper pore at each July, 2 August 1970. end, disc with scattered, minute punctures anterior- REMARKS.—The paratypes show only slight varia- ly and laterally, posteriorly with a patch of dose, tion; length 4.8 to 5.8 mm. The metasternum out- very slightly larger punctures; smooth, shining, side the discal area may show very minute alutaceus impunctate outward to sides, metasternal triangle sculpture throughout. The slightly larger occipital deep and smooth, extreme sides minutely aluta- punctures of the head vary slightly in size and ceous. Abdominal sterna smooth and shining, number. Very few males were found among the closely fluted along anterior margins, punctures specimens. A few specimens show traces of a pos- very minute and scattered at middle, then grad- terior marginal line on middle and posterior ually fine to coarse at sides where they are separated femora. This shiny black species with bright red by their diameters or less. Eroded area of pygidium dish legs is a very handsome beetle. The coarse about as wide as apical lip which is longitudinally pronotal punctures around the smoother, finely nearly as long as 5th sternum. Anterior femora punctate anterior medial area give it a striking smooth, shining, with very minute punctures, peri- appearance. Ataenius platensis has a similarly punc- 82 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY tate pronotum but shows less disparity in the size convex. Metasternum with minute punctures, shin- of the punctures and is more slender, less robust ing, midline strong and deep, a little rugosely than A. stephani. punctate sculpture at extreme sides, metasternal The species is named in honor of Karl Stephan triangle shining, without definite punctures but of Tucson, Arizona, who collected all the speci- surface very slightly uneven. First visible abdomi- mens except one. nal sternum with posterior marginal line, remain- ing four sterna finely fluted along anterior margin, 2nd, 3rd, and 5th sterna with posterior marginal 55. Ataenius platensis (Blanchard) line at sides, very finely punctate at middle to Oxyomus platensis Blanchard, 1846:185. coarsely, deeply, closely punctate to sides. Pygidium Ataenius platensis Harold, 1876:95.—A. Schmidt, 1922: with very finely punctate, shining apical lip, disc 434.—Hinton. 1937b: 177—Cartwright, 1948:149. deeply, roughly eroded. Anterior femora with peri- Ataenius anticus Fall, 1930:105.—Hinton, 1937b: 179 Cart- marginal groove, surface shining, minutely punc- wright, 1948:149. tate anteriorly, posteriorly with ten or twelve DESCRIPTION.—Length 3.6 to 4.9 mm; width 1.5 scattered moderate punctures. Middle and hind to 2.0 mm. Oblong-elongate, shining, piceous, legs femora smooth, shining, minutely punctate, two and anterior margin of pronotum and head fre- or three coarse setigerous punctures at knee, pos- quently reddish. Clypeal edge finely reflexed, the terior femoral line of middle femora half or more edge slightly higher but not angulate and broadly of the femoral length, occasionally complete, pos- rounded each side of a very moderate median terior femoral line of hind femora usually half emargination, sides slightly arcuate to sharply or less than half the length of the femur. Apical rounded, nearly right-angled genae; surface trans- fringe of posterior tibiae five setae in a group, a versely wrinkled except for a few very fine, close short accessory spine half their lengths and an in- punctures at upper edge of clypeus at middle; tervening seta between spine and spurs. First pos- frontal area similarly finely punctate, separated by terior tarsal segment slightly longer than long about their diameters, not quite so numerous at spur, and longer than the following three seg- base of head. Pronotum normally convex, three- ments combined. The 4th abdominal sternum is fourths as long as wide, sides and base strongly relatively shorter at middle and the pygidium margined, edge noticeably crenate at posterior longer in the males. angles, fimbriate, the setae moderately long and HOLOTYPE.—In Museum National d'Histoire noticeable except across the base where they are Naturelle. very short, longest at anterior angles where they TYPE-LOCALITY.—Buenos Aires. are twice as long as the distance between them; SPECIMENS EXAMINED.—969. anterior angles obtusely rounded, posterior angles DATES COLLECTED.—January 29 to December 30. broadly rounded; surface with mixed punctures, DISTRIBUTION (Figure 22).—Alabama: Auburn, evenly distributed, very fine punctures everywhere, Birmingham, Cheaha State Park, Crossville, Es- and very moderately coarse punctures less regularly cambia County, Greenbriar, near Helena, Longdale and usually not closely spaced toward sides and (Chambers County), Lawrence County, Lee Coun- base, a few coarse punctures gradually smaller ty, Mobile, Monte Sano State Park, Pyziton (Clay toward anterior disc at middle where they are County), Russell, Storrsland, Trinity, Tuscaloosa. usually lacking entirely. Elytra moderately convex, Arizona: Tucson. Arkansas: Crawford County, two-thirds as wide as long, humeri finely dentate, Hope, Johnson County, Magazine Mts. (Logan striae moderately fine and deep, fine strial punc- County), Pike County, Washington County. Cali- tures crenating inner margins of the weakly convex fornia: Alhambra (Los Angeles County), Col ton, intervals, lateral intervals not different, intervals San Diego County, San Bernardino, San Marino. with minute punctures more or less in a row along Florida: Avon Park, Black Warrior State Park, each margin, slightly more convex over apical Bradenton, Bratt (Escambia County), Chipley, declivity. Mesosternum shagreened with fine alu- Dade City, Dunedin, Gainesville, Glen St. Mary, taceous sculpture and fine, short, decumbent hair, Homestead, Key Largo, Knights (Hillsborough without strong carina between coxae, only slightly County), Miami, Ocala, Oneco (Manatee County), NUMBER 154 83

FIGURE 22.—Distribution of Ataenius platensis (Blanchard).

Parish,. Pensacola, Saint Andrews State Park, Santa sciusko, Lincoln County, Madison County, Stark- Rosa County, Sheffield, Silver Lake Recreational ville, State College, Washington County. North Area (Leon County), Surf Panacea, Tallahassee, Carolina: Anson County, Apex, Balsam, Camp Le- Tall Timbers Research Station, Torreya State Park jeune, Carthage, Duplin County, Raleigh, Rich- (Liberty County), Trinity, Washington County, mond County, Robeson County, Southern Pines, Wewahitchka. Georgia: Arlington, Atlanta, Au- Sunburst, Swan Quarter. Oklahoma: Beaver Bend gusta, Barnesville, Baxley, Beachton, Berwick, State Park, McCurtain County, Norman, Oklahoma Brookhaven (De Kalb County), Dougherty Coun- City, Oklahoma County, Texhoma (near Willis). ty, Experiment, Fort Benning, Franklin D. South Carolina: Aiken, Allendale, Antreville, Be- Roosevelt State Park (Chipley, Harris County), thune, Blaney, CCC Camp F2, Charleston, Chester Hazelhurst, Head River, Hinesville, Milledgeville, (4 m N), Clemson, Clinton, Columbia, Eutawville, Milner, Nashville, Peach County, Pine Mtn., Sa- Florence, Georgetown County, Gramling, Haile vannah, Stone Mtn., Tifton, Upson County, Ware Gold Mine (Lancaster County), Hilton Head, County (L. S. Walker State Park). Indiana: Marion Hunting Island, Jefferson, Jocassee, Liberty Hill County. Louisiana: Alexandria, Avery Island, (in tree hole, Kershaw County), Meredith, Myrtle Baton Rouge, Bossier Parish, Calcasieu Parish, Beach, North Augusta, Okeegee River (Beaufort Gueydan, Lafayette, Leesville, New Orleans, Opa- County), Pelion, Pinnacle Mtn., Pontiac, Pritchard- lousas, Patterson, Raceland, St. Mary Parish, Sam ville, Ritter, St. Paul, Sandy Springs, Santuck, Houston State Park, Shreveport, Slidell (6 mi W, in Sassafras Mtn., Seabrooks Island, Summerville, St. Tammany Parish). Mississippi: Brooklyn, Camp Swansea, Tigerville, Walhalla, White Pond, Yemas- Shelby, Greenwood, Grenada, Gulfport, Hinds see, York (4 mi S). Tennessee: Benton County, County, Horn Island, Keesler Field (Biloxi), Ko- Burrville, Cades Cove (Great Smoky Mts.), Chil- 84 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY howee Mtn., Harrison Bay State Park (Hamilton a band of punctures twice their size, separated by County), Knoxville, Nashville, Pulaski, Smyrna. about their own diameters, fewer and not so close Texas: Anahuac, Anderson County, Bastrop State at base of head. Pronotum convex, slightly nar- Park, Bexar County, Big Bend National Park, rower in front, about one-fourth wider than long, Brown County, Brownsville, Brownwood, College sides and base strongly margined, edge crenate, Station, Columbus, Comfort, Corpus Christi, Dallas fimbriate, crenations noticeable at anterior angles, County, Davis Mtns., Del Rio, Denison, Eagle the setae fine, long, conspicuous, generally sep- Pass, Edinburg, El Paso, Enchanted, Fort Davis, arated by less than their lengths laterally, very Fredericksburg, Georgetown, Gillespie County, short basally; surface with mixed punctures Harlingen, Harrisburg, Hildalgo County, Hous- throughout, the very fine, evenly spaced punctures ton, Junction (Kimble County), Kerrville, Laredo, separated by about twice their diameters, the Linden, Lolita, Menard, New Braunfels, Richard- coarse punctures somewhat irregularly spaced but son, Rio Grande City, Santa Rosa, Schulenberg, numerous, gradually much finer and less numerous Sinton, Starr County, Tennessee Colony (Ander- over median anterior third of disc. Elytra one- son County), Tom Green County, Tyler, Uvalde, third longer than wide, humeri not strongly den- Victoria, Weslaco, Western Cameron County, tate, striae deep, punctures strongly crenating Wharton, Winter Haven. Virginia: Ashgrove, Nor- inner margins of the very moderately convex inter- folk. vals, which show scattered, minute punctures more REMARKS.—Ataenius platensis is one of a group or less in marginal rows, lateral intervals not differ- of very similar-appearing species that includes A. ent except for the 9th, which is densely, very finely aequalis Harold, A. nugator Harold, A. integer punctate. Mesosternum shagreened with fine, alu- Harold, and A. heyrovski Balthasar (1960:5). Char- taceous sculpture and fine, short appressed hairs, acters used in the key will separate the United carinate between the coxae. Metasternum smooth States species. Ataenius platensis has the middle and shining but with moderately close, minute anterior disc of the pronotum and the basal area punctures over disc and fewer outward to scabrous of the head devoid of moderate and coarse punc- area at extreme sides, midline long and deep, meta- tunes and with only fine or minute punctures in sternal triangle smooth, deep, but sides not sharply these areas. The species is commonly found under defined. Abdominal sterna strongly, closely punc- partly dried or day-old cow dung and is attracted tate from side to side, fine at middle to coarse at to lights. The larva was described by Jerath (1960: sides, first visible sternum with posterior marginal 79). line, the remaining four sterna fluted along an- terior margin and the 2nd, 3rd, and 5th sternum with a posterior marginal row of very close punc- 56. Ataenius picinus Harold tures forming a line along outer third. Pygidium with strong, shining apical lip and roughly eroded Ataenius picinus Harold, 1867a:281 Schmidt. 1922:422.— Cartwright, 1964:103. disc. Anterior femora with perimarginal groove, Ataenius salutator Fall, 1930:99.—Cartwright, 1948:149; 1964: surface shining but with very fine, irregularly 103. placed, minute punctures and five or six coarse, Ataenius darlingtoni Hinton, 1937b: 179.—Cartwright, 1945: crescent-shaped punctures at the knee. Middle and 47; 1948:149; 1964:103. hind femora similarly minutely punctate, with DESCRIPTION.—Length 4.8 to 5.8 mm; width 2.0 one or two coarse, setigerous punctures at knee, to 2.5 mm. Oblong-elongate, moderately convex, and a strong, posterior marginal line over outer shining, black, sometimes with anterior margins half of femur. Posterior apical fringe of hind tibia of pronotum and clypeus, and legs reddish. Cly- invariably a group of four setae, a strong accessory peus with finely reflexed margin, broadly rounded spine, and an intervening seta between the spine each side of moderately deep median emargination, and spurs. The first posterior tarsal segment, the sides slightly arcuate to nearly right-angled genae; following three segments combined, and the long surface finely, transversely wrinkled over anterior spur all equal in length. Males have the 4th ab- two-thirds with moderately fine, close punctures dominal sternum about two-thirds as long as the medially to frontal area where they merge with preceding sternum, the 5th relatively shorter, and NUMBER 154 85 the pygidium longer with a wider apical lip than Ataenius sulcatula.—Harold, in Gemminger and Harold, is found in females. 1869:1067.—Schmidt, 1922:459. LECTOTYPE.—In Museum National d'Histoire Ataenius sulcatulus.—Chapin, 1940:41 [not Chevrolat, 1864: Naturelle. Holotype of A. salutator Fall in Mu- 413]. seum of Comparative Zoology. Ataenius frankenbergeri Balthasar, 1938:56.—Cartwright, 1968:27. [New synonymy.] TYPE-LOCALITY.—Chile, South America. Type- locality of A. salutator Fall, Pensacola, Florida. DESCRIPTION.—Length 3.6 to 4.5 mm; width 1.6 SPECIMENS EXAMINED.—150 + . to 1.9 mm. Piceous or black, shining, oblong, con- DATES COLLECTED.—January 3 to September 27. vex, sides of pronotum and elytra not visible from DISTRIBUTION (Figure 18).—Alabama: Anniston, directly above. Head convex; clypeus slightly an- Auburn, Birmingham, Claiborne, Fairhope (Bald- gulate each side of moderate median anterior win County), Gulf State Park, near Helena (Shelby emargination, sides arcuate to inconspicuous, County), Lee County, Mobile, Storrsland. Arkan- slightly more than right-angled genae, edge finely sas: Drew County, (College Heights), Hope Experi- reflexed, concave, smooth, very minutely punctate ment Station (Hempstead County), Magnolia (Co- back of emargination, surface elsewhere very finely lumbia County), Taylor (3 mi W, in Lafayette punctate with the punctures separated by about County). Florida: Bratt (Escambia County), Crest- twice their diameters, front with band of very view (Okaloosa County), Gainesville, Marianna moderate punctures, generally separated by less (Jackson County), Molino (Escambia County), than their diameters, which are smaller anteriorly Pensacola, Santa Rosa County, Walnut Hill (Es- and blend smoothly with upper clypeal punctures, cambia County), Westville (Holms County). those of posterior edge about equal in size to those Georgia: Arlington, Beachton, Columbus, Dough- of pronotum. Pronotum convex, about one-third erty County, L. S. Walker State Park (Ware Coun- wider than long, base somewhat angularly arcuate, ty). Louisiana: Alexandria, Avery Island, Harahan, anterior angles obtusely rounded, sides slightly Leesville, New Orleans, Pineville, Raceland, St. arcuate in front, shallowly emarginate before the Mary Parish, Sam Houton State Park, Shreveport. rounded posterior angles, sides and base strongly Mississippi: Biloxi, Gulf port, Hinds County, Horn margined, crenate-fimbriate, the setae short, sep- Island, Jackson, Lincoln County, Long Beach, arated by more than their length; surface mod- Lucedale, Madison County, McComb, Moss Point, erately coarsely punctate throughout, slightly Ocean Springs. South Carolina: Blackville, Charles- smaller in front, punctures rather evenly distrib- ton, Combahee River, Myrtle Beach, Pritchard- uted but more irregularly so and less close over ville, Summerville, Yemassee. Texas: Beaumont, middle where they may be separated by one to four College Station, Elkhart (10 mi SW, in Anderson diameters, usually by about their diameters over County), Houston, Jasper, Mother Neff State Park, lateral third. Elytra convex, slightly more than Orange, Vidor (Orange County). twice as long as wide, humeri weakly dentate, REMARKS.—The combination of size, crenate, an- striae deep and strong, strial punctures deep, sep- terior lateral margin of the pronotum, densely, arated by about four times their diameters, crenating finely punctate 9th elytral interval, and group of inner side of slightly convex intervals, the intervals four setae on apical margin of the posterior tibia minutely punctate, some scattered but mostly in will identify this worldwide species (Figure Id). rows along margins; over the apical declivity the It is known from southern United States, West striae become much wider, the intervals become Indies, South America, Australia, New Zealand, strongly carinate with margins eroded; laterally Fiji, New Caledonia, and New Hebrides. the intervals become more convex and the rows of punctures more distinct and noticeable, the 10th interval alutaceous and nearly flat, the punctures 57. Ataenius brevicollis (Wollaston) apically and laterally are minutely setigerous. Mesosternum carinate between the coxae. Meta- Oxyomus brevicollis Wollaston, 1854:229. sternum with strong, deep midline, disc with nu- Ataenius brevicollis. Harold, in Gemminger and Harold, merous mixed minute and very fine punctures, 1869:1066. Auperia sulcatula Chevrolat, 1864:413. [New synonymy.] increasingly roughly, closely punctate outward to 86 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY scabrous surface at sides, metasternal triangle finely now in the Staatliches Museum fur Tierkunde, scabrous within. Abdominal sterna finely fluted Dresden. Dr. Rudolf Petrovitz of Vienna called along anterior margin, deeper posteriorly, the flut- my attention to the synonomy of A. frankenbergeri ing of the 5th sternum much deeper and at middle Balthasar with A. brevicollis Wollaston. I had ex- half as long as the sternum, all sterna quite coarsely, amined the types of both at different times and closely punctate, punctures generally separated by designated homotypes which prove the synonymy their diameters, slightly closer and coarser at sides, is correct. The type-locality of A. sulcatulus was punctures of 5th sternum noticeably finer. Pygid- Cuba, Ungebung von Havana. The type of A. ium deeply, roughly eroded; apical lip convex, frankenbergeri was also from Havana, Cuba. shining, very finely, closely punctate. Male py- gidium relatively longer than in female. Anterior 58. Ataenius rhyticephalus (Chevrolat) femora with deep perimarginal groove, surface roughly punctate, finer in front, coarser, closer Auperia rhyticephalus Chevrolat, 1864:413. and united in close diagonal lines posteriorly. Ataenius rhyticephalus.—Harold in Gemminger and Harold, 1869:1067. Middle femora with scattered, elongate, finely seti- Ataenius floridanus Brown, 1930:3 Fall, 1930:97. [New syn- gerous, moderate to coarse punctures separated onymy.] by one to three diameters, slightly larger outward Ataenius strigicauda.—Cartwright, 1948:149 [not Bates, 1881: to knee, three strong setae at knee, posterior mar- 96]. ginal line deep and complete. Posterior femora Ataenius solitarius Blatchley, 1928:69.—Cartwright, 1948:149. with relatively few fine to moderate punctures, a [New synonymy.] row of coarse punctures along anterior edge, three DESCRIPTION.—Length 4.3 to 5.6 mm; width 2.0 or four coarse, setigerous punctures at the knee, to 2.3 mm. Piceous or black, shining, oblong, sub- the posterior femoral line deep, inward one-third parallel, moderately convex. Head moderately con- or more from the knee and usually continued on vex, clypeus very broadly rounded each side of by disconnected elongate segments or punctures moderate median emargination, sides arcuate to toward coxae. Posterior tibial fringe of six setae, sharp, right-angled genae, edge finely reflexed; sur- accessory spine of same length and an intervening face transversely wrinkled upward from small seta between spine and spurs. First segment of median, marginal concavity to middle of greatest posterior tarsus longer than long spur, subequal convexity, finely, closely punctate between wrinkles to following four segments combined. and transverse band of close, coarse punctures of HOLOTYPE.—In British Museum (Natural His- frontal-occipital area, the coarse punctures gen- tory). erally separated by less than their diameters; a TYPE-LOCALITY.—Madeira Islands. sharp deep groove upward from genae around SPECIMENS EXAMINED.—26. curvature of eye. Pronotum convex, base arcuate, DATES COLLECTED.—March 18 to June 7. one-fourth wider than long, anterior angles ob- DISTRIBUTION (Figure 3).—Florida: Dade County, tusely rounded, hind angles broadly rounded, sides Key Largo, New Smyrna. Mississippi: Gulfport. and base strongly margined, fimbriate-crenate, the Texas: Brazos. setae slightly longer anteriorly, separated by their REMARKS.—Ataenius brevicollis is quite similar own lengths at posterior angles; surface with mixed to A. rhyticephalus in apical and lateral characters punctures, the disc with very fine and coarse punc- but is smaller and much more convex. It has been tures (separated by 2 to 4 diameters), laterally collected in dung in the nests of the wood rat Neo- over outer third much more closely set with coarse toma floridana smalli Sherman on Key Largo, and very fine to fine punctures, crowded and prac- Florida, by L. J. Bottimer and R. E. Woodruff. tically contiguous in anterior and posterior angles, Wollaston reported it as "Rather common around otherwise the coarse punctures separated up to Funchal in Medeira proper, occurring beneath their diameters. Elytra about one-half longer than damp garden refuse and under putrid substances wide, more than twice the length of the pronotum, near the beach." sides slightly crenate, humeri dentate; elytral striae I have examined the lectotype (present designa- strong, strial punctures deep, quite close, crenating tion) of Ataenius sulcatulus (Chevrolat), which is inner margin of intervals on disc where the inter- NUMBER 154 87 vals are flat to very weakly convex with scattered, DISTRIBUTION (Figure 16).—Florida: Big Pine minute punctures; over apical declivity the striae Key, Collier-Seminole State Park, Dunedin, Enter- become much wider, the intervals strongly convex, prise, Everglades National Park, Gainesville, High- and the punctures larger and much more notice- lands Hammock, Key West, Levy County, Marion, able, laterally the intervals are more convex and Monticello, Myakka State Park, Paradise Key, the outer three strongly, closely punctate, the Royal Palm Park, Tall Timbers Research Station, shoulders are very closely and quite coarsely punc- Tampa, Timms Hammock, West Palm Beach. tate; posteriorly under high magnification the South Carolina: Charleston, Gardens Corner, Run- coarser punctures are minutely setigerous. Meso- nymede, Yemassee. Texas: "Texas." sternum weakly carinate between the coxae. Meta- REMARKS.—Ataenius rhyticephalus is closely re- sternum with strong, deep midline slightly deeper lated to A. heinekeni Wollaston (1854:228) and at ends, disc smooth with some very minute punc- A. strigicauda Bates (1887:96). In fact, I once syn- tures and usually six to eight coarse punctures onymized A. rhyticephalus (floridanus) with A. at base of middle legs, roughly, closely punctate at strigicauda but I now believe they are quite dis- extreme sides, smooth otherwise, moderately deep tinct. In A. strigicauda from Mexico, the basal metasernal triangle with some minute sculpture frontal punctures gradually become slightly smaller within. Abdominal sterna finely fluted along an- down over the clypeus as opposed to a distinct terior margin, surface coarsely, closely punctate band in A. rhyticephalus, the base of the pronotum throughout, only at middle finer and less close, is distinctly emarginate opposite the humerus, the the first two completely visible sterna also have a crenations of the elytral intervals are coarser and posterior marginal row of very close punctures; more noticeable, and over the apical declivity the the anterior flutings of the 5th sternum are much intervals are noticeably margined or eroded along deeper and up to half the length of the sternum each side. In A. heinekeni, from Madeira Islands, at middle. Pygidium deeply eroded, rough, with the pronotal angles are shallowly, densely punc- moderately wide, minutely punctate, convex apical tate, many of the punctures running together, the lip. Anterior femora with deep perimarginal groove, base of the pronotum is slightly emarginate at the trochanter and adjacent femoral surface smooth posterior angles, the lateral elytral intervals are less and shining, remaining flattened surface rough coarsely and conspicuously punctate, the crenations with moderately coarse punctures tending to form of the elytral intervals are finer and less noticeable, diagonal lines. Middle and hind femora inwardly and the upper surface of the pronotum and elytra smooth, minutely punctate, outwardly especially is minutely but distinctly alutaceous. I have ex- along anterior margin near the knee with scattered, amined the types of all three species. coarse punctures, posterior marginal lines deep, Although I have seen A. rhyticephalus only from usually complete on middle femur and about three- South Carolina, Florida, and Texas, I suspect it fourths total length from the knee on hind femur. occurs in all the intervening states as well. I have Posterior tibia with strong accessory spine, fringe not seen it in light-trap material. My own collec- of setae in a group of four but, although the ac- tions were made under leaves on hard ground cessory spine is remote from the spurs, I find only under live-oak trees on old rice-field dams, in a very short intervening seta, not half the length church yards, and under roadside debris. Some of the group of four. First tarsal segment of hind Florida specimens were taken in forest litter. Jerath legs longer than the long spur and almost as long (1960:75) described the larva under the name as the following four segments combined. Abdomen Ataenius strigicauda Bates. slightly flatter and the pygidium relatively longer in the male. 59. Ataenius brevis Fall HOLOTYPE.—In Staatliches Museum fur Tier- kunde, Dresden. Ataenius brevis Fall, 1930:98.—Cartwright, 1948:150. TYPE-LOCALITY.—Cuba. SPECIMENS EXAMINED.—50. DESCRIPTION.—Length 3.4 to 5.1 mm; width 1.6 DATES COLLECTED.—February 21 to September to 2.3 mm. Black, shining, moderately convex, 15. short, oblong-oval, legs dark rufous. Head mod- 88 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY erately convex; clypeal margin very finely reflexed, which is also much longer than the following three broadly rounded each side of wide, shallow median segments combined. emargination, sides arcuate to sharply rounded, HOLOTYPE.—Fall Collection, Museum of Com- right-angled genae; surface very finely, evenly punc- parative Zoology, No. 24767. tate, punctures separated by two diameters, some- TYPE-LOCALITY.—"Pennsylvania." Dr. Fall states times weakly but perceptibly transversely wrinkled that the two cotypes were collected by Henry anteriorly below median convexity; occipital area Ulke—probably in the Blue Ridge Mountains with crossband of moderately coarse punctures where Ulke had a summer home or camp at Pen slightly closer toward sides. Pronotum about one- Mar, Pennsylvania. fourth wider than long, sides parallel; anterior SPECIMENS EXAMINED.—160+. angles obtuse, hind angles broadly rounded, sides DATES COLLECTED.—April 18 to September 8. and base margined, minutely to very finely cre- DISTRIBUTION (Figure 18).—Alabama: Franklin nate, more noticeably so around posterior angles County (The Dismals). District of Columbia. where the short marginal setae are separated Georgia: Billys Island (Okefenokee Swamp), Pine usually by more than their own lengths; surface Mtn., Satolah. Maryland: Cove Point, S. I. Java with mixed very fine and numerous irregularly Farm (Anne Arundel County). Massachusetts: Chi- placed, moderately coarse punctures, usually closer copee, Sherborn. New Hampshire: "New Hamp- toward sides. Elytra short and convex, about one- shire," Three Mile Island. New Jersey: Fort Lee. half longer than wide, sides arcuate, humeri New York: New York City, Peekskill. North Caro- strongly dentate; striae strong, crenately punctate; lina: Black Mountains, Buck Forest, Highlands, intervals weakly convex, smooth and shining but Pisgah Forest. Pennsylvania: Frazer, Pen Mar, Po- with scattered, minute punctures, 10th interval flat cono Mts. Rhode Island: North Kingston (Boston or less convex than 9th interval. Mesosternum cari- Neck). South Carolina: CCC Camp F2 (Oconee nate between coxae. Metasternum shining, middle County), Clemson, Earl's Ford (Oconee County), line strong and deep, slightly shorter than length of Fish Hatchery (Oconee County), Mountain Rest, first two abdominal segments combined, discal area Pinnacle Mtn., River Falls, Sassafras Mtn. (Pickens of male with very fine punctures anteriorly, mod- County). Tennessee: Burrville, Citico, Venore (11 erate punctures over posterior half, generally sep- mi W). Virginia: Falls Church. arated by their diameters or less, similar punctures REMARKS.—The habitus of this species is quite outward to scabrous area at sides, female lacking distinct and quickly separates it from others of the larger punctures, metasternal triangle mod- the strigatus group to which it belongs. The short, erate, not sharply defined. Abdominal sterna oval elytra with normal, almost quadrate pro- shining, punctate throughout, fine medially to notum give a quite distinctive appearance. From moderately coarse at sides where they are separated A. strigatus it may be separated also by the flat by one or two times their diameters; finely fluted or weakly convex 10th elytral interval, by the pos- along anterior margins, the fluting increasingly terior femoral line being one-half or less the dis- longer on each sternum posteriorly; pygidial tance from knee to trochanter, and the transverse eroded area longer in males. Anterior femora with wrinkles of the clypeus lacking, very weak, or the perimarginal groove; surface narrowly smooth median convexity simply punctate. Small speci- along anterior margin, elsewhere roughly, closely mens of A. fattigi are sometimes difficult to sep- punctate with mixed fine and moderate punctures. arate, but in A. brevis the elytral strial punctures Middle and hind femora shining, with very fine, are usually fine and more widely spaced, the eroded scattered punctures separated by three or four posterior marginal line of the first visible abdomi- times their diameters; posterior marginal line nal sternum angles forward at middle leaving a strong, extending about half the distance from the smooth, more or less triangular area at the edge, knee to the trochanter. Hind tibia with strong and the anterior prosternal lobe has the center accessory spine with intervening seta between convex; in A. fattigi the strial punctures are more spine and spurs and a fringe group of five setae, closely spaced, the eroded marginal line of the rarely four or six; spurs fine and slender, the long first visible abdominal sternum may angle forward spur much shorter than first segment of tarsus at middle but its posterior edge remains straight NUMBER 154 89 along the edge of the sternum, and the anterior finely fluted along anterior margin, fluting of 5th prosternal lobe has the center concave. sternum a little longer but not greatly longer at Jerath (1960:76) described the larva of A. brevis. middle, possibly twice as long at middle as at sides; elsewhere the surface punctate from side to side, finely so at middle, gradually coarser to sides 60. Ataenius spretulus (Haldeman) where they are moderately coarse and separated by Aphodius spretulus Haldeman, 1848:106. their diameters or less, 5th sternum with only very Ataenius spretulus.—Harold [as a synonym of strigatus Say], fine punctures and a single, very large, deep, in Gemminger and Harold, 1869:1067 Horn, 1887:109. elongate puncture or pore at extreme sides. Pygid- Ataenius consors Fall, 1930:104 [not Blackburn, 1904:161].— ium with shining, convex apical lip and disc finely, Cartwright, 1943:108. Ataenius falli Hinton, 1934:119—Cartwright, 1943:108. roughly eroded. Anterior femora with strong peri- Ataenius spretulus Cartwright, 1943:108; 1948:150. marignal groove, surface smooth and shining, with scattered, minute punctures, occasionally a few DESCRIPTION.—Length 3.6 to 5.5 mm; width 1.7 very shallow, indistinct moderate punctures pos- to 2.4 mm. Elongate-oblong, moderately convex, teriorly. Middle and hind femora smooth, shining, shining black, legs and clypeal margin reddish. with scattered, very fine punctures, strong posterior Head convex, finely reflexed edge of clypeus broadly marginal line along outer half. Apical fringe of rounded each side of wide, shallow median emargi- posterior tibia usually a group of five setae, a nation, sides nearly straight to sharply rounded, strong accessory spine of equal length, and an in- right-angled genae; surface feebly, transversely tervening seta between the spine and spurs. First wrinkled anteriorly, finely, closely punctate above segment of hind tarsus longer than long spur, and middle, the punctures separated by twice their longer than following three tarsal segments com- diameters or less, front with transverse band of bined. Males have a patch of close, moderate, moderate punctures, unevenly distributed but gen- setigerous punctures at middle each side of meta- erally separated by about their diameters, more or sternal midline, the 4th abdominal sternum is less. Pronotum about three-fourths as long as wide, shorter at middle and the pygidium longer with convex, anterior angles obtusely rounded, posterior much wider apical lip than in the female. angles rather broadly rounded, sides and base HOLOTYPE—Museum of Comparative Zoology, strongly margined, sides fimbriate-crenate at an- No. 8358. terior and posterior angles, the crenations barely TYPE-LOCALITY.—"Middle States," i.e., middle visible, the setae short and inconspicuous, separated Atlantic states. by a little more than their lengths, middle third SPECIMENS EXAMINED.—1252 + . or more of margin without setae; surface with DATES COLLECTED.—February 17 to November 11. evenly spaced, minute to fine punctures throughout DISTRIBUTION (Figure 15).—Alabama: Anniston, and very irregularly placed, scattered, coarse punc- Auburn, Birmingham, Florence, Huntsville, Mo- tures intermixed, usually relatively few, sometimes bile, Pyziton (Clay County). Arkansas: Arkansas in scattered groups. Elytra approximately one-third County, Beaver Lake (Madison County), Cave longer than wide, humeri finely dentate, sides very Creek Valley (Washington County), Devils Den weakly arcuate, striae fine, moderately convex in- State Park, Drew County, Fayetteville, Hope, Hot tervals, surface smooth, shining, but with scattered, Springs National Park, Little Rock, Magnolia extremely minute punctures, lateral intervals not (Columbia County), Pike County, Randolph different. Mesosternum shagreened as usual, with County, Taylor, Washington County. California: very fine surface sculpture and short, fine, decum- Big Basin State Park (Santa Cruz County). Colo- bent hair, carinate between the coxae. Meta- rado: "Colorado," Pueblo. Connecticut: Hamden, sternum with long, strong, deep midline, smooth Meriden, New Haven. Delaware: Bethany Beach, and shining but with very fine, scattered punctures, Bridgeville, Delaware Beach, Dover, Farmington some shallow, rough sculpture at extreme sides, (Kent County), Georgetown, Lewes, Milton, New- metasternal triangle strong, faintly roughened ark, Rehoboth Beach, Smyrna, Sussex County, within. First visible abdominal sternum with fine Wilmington. District of Columbia: Washington. posterior marginal line, the remaining four sterna Florida: Archbold Biological Station, Belle Glade, 90 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY Biscayne, Bradenton, Capron, Chicopee, Clewis- out, Reisterstown, Salisbury, Scotland (St. Marys ton, Colliersville, Coral Gables, Daytona, Dunedin, County), Shelton, Takoma Park, Thurmont, Upper Enterprise (Volusia County), Flamingo, Florida Marlboro. Massachusetts: Amherst, Boston, Brook- City, Fort Lauderdale, Fort Myers, Gainesville, line, Fall River, Framingham, Groton, Newton, Goulds, Haw Creek, Highlands Hammock State Ramsey, Waban, Waltham. Michigan: Agricultural Park, Holly Hill, Homestead, Immokalee, Jackson- College, Bay County, Bellevue, Chelsea (Wash- ville, Key West, Kissimmee, Lake Letta (Avon tenaw County), Detroit, East Lansing, Flint, Mid- Park), Lake Marion, Long Pine Key, Marion land County, Selbridge Field, Wayne County, County, Mayport, Merritt Island, Miami, Miami Whitmore Lake. Minnesota: Big Stone County, Beach, Miami Springs, Monkey Jungle, Moore Buffalo, Duluth, Fairbault, St. Paul. Mississippi: Haven, Myakka River State Park, Ochopee Grenada, Gulfport, Horn Island, Indianola, Itta (Collier County), Okeechobee, Oneco (Manatee Bena, Keesler Field-Biloxi, LeFlore County, Le- County), Orange County, Palms Vista Hammock land, Long Beach, Meridian, Moss Point, Pearl (Everglades National Park), Paradise Key, Parrish, (Jackson), Rankin County, Raymond (Hinds Perrine, Punta Gorda, Royal Palm Park, Sanford, County), Scott (Bolivar County), Starkville, State Sarasota, Stock Island, Tallahassee, Tampa, Venus College. Missouri: Bagwell, Centerville, Charles- (Highland County), Vero Beach, West Palm Beach, ton, Clarksville, Clayton, Cole County, Columbia, Zolfo Springs. Georgia: Atlanta, Bald Mtn., Brook- Dardene Prairie, Everton, Hayti, Ironton, Jeffer- haven (De Kalb County), Clarkston, Demorest, son City, Louisiana, Newberg, Pacific, St. Joseph, Franklin D. Roosevelt State Park, Nashville, Pine St. Louis, Scott County, Springfield, Stanton, Ver- Mtn., Rossville, Stone Mtn., Valdosta. Idaho: Kel- non County, Webster Groves, W. Quincy, Wil- logg. Illinois: Argonne National Laboratory (Du liamsville. Nebraska: Bennett, Fairmont, Halsey, Page County), Beverly Hill, Carbondale, Caterville Holt County, Lincoln, McCook, South Bend, West (Williamson County), Crab Orchard (Williamson Point. New Hampshire: "New Hampshire." New County), Evanston, Highland Park, Murphrysboro Jersey: Anglesea, Atlantic City, Avalon, Avenel, (Jackson County), Olympia Field, Quincy, Union Bamber Lake, Blenheim, Boonton, Cape May, County, Zeigler. Indiana: Athens, Dunes Park Chelsea, Clementon, Hadden Heights, Hoboken, Beach, Forestville, Grantsburg, Hovey Lake, In- New Brunswick, New Lisbon, Sea Island, Wild- dianapolis, Lafayette, Lawrence County, Rich- wood, Woodbury, Wrightstown. New Mexico: mond, Wolf Lake. Iowa: Ames, Bedford, Cedar "New Mexico." New York: Brooklyn, Ithaca, Jeri- County, Council Bluffs, Davis County, Eddyville, cho, New York City, Peekskill, Putnam Valley, Guttenburg, Indianola, Iowa City, Manwell, Okee- Roslyn (Long Island), West Point. North Carolina: boji, Redfield, Shenandoah, Silver Lake. Kansas: Apex, Greensboro, Judaculla Rock, Pisgah Forest, Chetopa, Coffee County, Douglas County, Gardner Raleigh, Robeson County, Swan Quarter, Tryon. Lake (Johnson County), Kansas City, Lawrence, North Dakota: Cass County, Ransom County, Manhattan (5 mi N), Osage, Pittsburg, Potta- Richland County. Ohio: Ada, Athens, Champaign watamie County, Reno County, Riley County, County, Cleveland, Conneaut, Erie County, Frank- Seneca, Topeka, Wellington, Wilson County. Ken- lin County, Holgate, Hudson, Ottawa County, tucky: Barbourville, Bowling Green, Cadiz (Trigg Painesville, Washington County, West Alexandria. County), Fairdale, Jefferson County, Louisville, Oklahoma: El Reno, Miami, Norman, Oklahoma Newport, Old Hanco, St. Matthews, Wolf Creek City, Ponca City, Texhoma (near Willis), Tulsa, Lake (Wayne County). Louisiana: Alexandria, Union City. Pennsylvania: Bucks County, Castle Avery Island, Baton Rouge, Calcasieu Parish, Hara- Rock (Delaware County), Conshohocken, Davids- han, Jamesville, Kenner, Loanoke, Morgan City, burg, Downington, Easton, Eddystone, Evansburg, New Orleans, Olivier, Opelousas, Pearl River, German town, Harrisburg, Lansdowne, Lima, Pineville, Raceland, Shreveport, Vinton (14 mi E). Mount Airy, Norwood, Oaklane, Philadelphia, Maryland: Baltimore, Beltsville, Boonsboro, Col- Pittsburgh, State College, Wilkes Barre, Wormleys- lege Park, disfield, Edgewood, Forest Glen, Glen burg, York, Zelionople. Rhode Island: Newport. Burnie, Grecnbelt, Hagerstown, Hancock, Hebb- South Carolina: Charleston, Chester, Clemson, Co- ville, Hyattsville, Pocomoke Swamp, Point Look- lumbia, Florence, Monks Corner, Myrtle Beach, NUMBER 154 91 Tigerville. South Dakota: Brookings, Highmore, punctures separated by their diameters generally, Lake Sinai, Paulson (Lincoln County), Yankton. front with transverse band of close, moderate punc- Tennessee: Burrville, Cookeville, Friendsville, tures with a few scattered, fine punctures inter- Greeneville, Jackson, Johnson City, Knoxville, mixed. Pronotum approximately two-thirds as long Madison, Memphis, Morrison, Nashville, Oak as wide, anterior angles obtuse, sides very broadly, Ridge, Pulaski, Reelfoot Lake, Sevierville. Texas: evenly rounded into base, sides and base arcuate, Anderson County, Beaumont, Brazos, Brownsville, strongly margined, the edges fimbriate-crenate, the College Station, Dallas, Devils River, Edinburg, crenations scarcely visible, the setae moderately Galveston, Houston, Kerrville, La Marque (Galves- short, not very conspicuous, separated generally by ton County), Orange County, Piano, Reeves Coun- about their lengths; surface densely punctate with ty, Victoria, Whitesboro, Willis. Utah: Ogden, Salt mixed fine and moderately coarse punctures, the Lake County, Spanish Fork, Utah County, Weber coarse punctures a little closer toward anterior and County. Virginia: Arlington, Basye, Belvoir, Blacks- posterior angles. Elytra three-fourths as wide as burg, Camp Pickett, Charlottesville, Chatham, long, humeri sharply dentate, sides weakly arcuate, Dumfries, Falls Church, Fort Monroe, Franklin, striae fine, moderately deep, strial punctures Hampton, Herndon, Middleburg, Mountain Lake, slightly crenating the flat to very weakly convex, Mount Vernon, Montgomery County, Nelson usually strongly alutaceous intervals, apical de- County, Norfolk, Paris, Roaches Run, Roanoke, clivity and lateral intervals more noticeably convex, Salem, Shenandoah County, Virginia Beach. West surface of intervals with scattered, minute punc- Virginia: Kanawha, Kearneysville, Wardensville. tures more or less in lateral rows also. Mesosternum Wisconsin: Madison, Milwaukee County, Nekoosa, shagreened as usual, carinate between the coxae. Wood County. Wyoming: Platte County. Canada: Metasternum smooth, shining, midline strong, disc Ontario: Ancaster, Forestville, Hamilton County, anteriorly minutely punctate to finely punctate Leamington, Ottawa, Point Pelee, Simcoe, Wal- posteriorly in the male (only slight difference in singham, Wentworth, Wheatley. female), smooth outward to the small scabrous REMARKS.—The type, bearing a small pink cir- area at extreme sides, metasternal triangle usually cle indicating "Middle States," was placed in the smooth and shining. First visible abdominal ster- LeConte series of A. strigatus Say, which it resem- num with fine posterior marginal line, remaining bles very closely. Ataenius strigatus differs in hav- four sterna with progressively longer fluting along ing coarsely, roughly punctate anterior femora and anterior margin, a little longer at sides on middle dense, coarse pronotal punctures at sides. Both sterna, longer at middle on 5th sternum, sterna species were frequently identified as A. cognatus punctate from side to side, punctures very fine at LeConte in earlier publications. middle to very moderate and closer at sides. Py- Ataenius spretulus has been collected in all but gidium longer in male, apical lip convex, shining, seven states in continental United States. minutely punctate, disc eroded, very finely scabrous. Anterior femora with perimarginal groove, surface 61. Ataenius wenzelii Horn shining, some scattered, minute to fine punctures, Ataenius wenzelii Horn, 1887:77 Robinson, 1947:150.— anterior spur of male strongly bent inward apically. Cartwright, 1948:150. Middle and hind femora smooth, shining, with Ataenius ludovicianus Fall, 1930:100.—Cartwright, 1948:150. scattered, very minute punctures and two or three coarse, finely setigerous punctures at knee; fine pos- DESCRIPTION.—Length 4.2 to 5.5 mm; width 1.9 terior marginal line along outer half best seen from to 2.3 mm. Elongate-oblong, moderately convex, behind. Posterior tibial apical fringe of five, some- dull to moderately shining, black, edge of clypeus times six, setae, a short, triangular accessory spine and legs reddish. Head convex, margin of clypeus and an intervening seta between spine and spurs. finely reflexed, broadly, evenly rounded each side The relative length of the long spur, first tarsal of shallow to moderate median emargination, sides usually slightly arcuate to right-angled genae; sur- segment, and following three segments of the pos- face anteriorly transversely weakly wrinkled, terior tarsus combined slightly variable but gen- median convexity and above finely punctate, the erally about equal in length. 92 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY HOLOTYPE.—Academy of Natural Sciences of vex, sides nearly straight, sides and base margined, Philadelphia, No. 3610. edge not perceptively crenate, marginal setae very TYPE-LOCALITY.—Atlantic City, New Jersey. moderate in length, generally separated by their SPECIMENS EXAMINED.—100+. own lengths; anterior angles obtusely rounded, DATES COLLECTED.—March 2 to October 23. posterior angles broadly rounded, surface with DISTRIBUTION (Figure 23).—Alabama: Mobile. mixed coarse and very fine punctures throughout, Arkansas: Hope. Florida: Wewahjtchka. Iowa: Gut- scattered in some specimens, evenly distributed in tenberg. Louisiana: Alexandria, Gueydan, New others, separated by less than one to several times Orleans. Maryland: Cambridge (10 mi S), Plum their diameters, the punctures a trifle smaller along Point. Mississippi: Gulf port, Horn Island, Ocean anterior margin, a little closer in anterior angles. City. New Jersey: Anglesea, Atlantic City, Beesleys Elytra one-third longer than wide, humeri dentate, Point, Brigantine, Sea Island City. North Carolina: sides nearly parallel, striae deep, crenate-punctate, Swan Quarter. Oklahoma: Willis. Pennsylvania: the crenations much deeper on inner margin of Pocono Lake. South Carolina: Charleston. Texas: interval; intervals weakly convex, lateral intervals Anderson County, Brazos, Brownsville, Corpus not different, surface with scattered, barely visible, Christi, Houston, La Marque (Galveston County), minute punctures and a line of the same along Whitesboro. Virginia: Norfolk, Virginia Beach. outside margin where they are separated by four REMARKS.—Horn's original description was in or five times their diameters. Mesosternum finely error on at least three important characters. Atae- carinate between the coxae. Disc of metasternum nius wenzelii does have an intercoxal carina, the slightly depressed medially, the midline deep and tibiae have an accessory spine, and the posterior strong, a few scattered, very fine punctures an- femoral line, though weak, is visible from behind, teriorly and outward to sides, male with a patch extending over the outer half to one-third of the of moderate, setigerous punctures just back of distance to the knee. The single specimen mounted middle, a few fine to moderate punctures at ex- ventral side up in the Horn series apparently lacks treme sides, metasternal triangle deep but not the intercoxal carina; however, this specimen is sharply defined, minutely alutaceous within; ab- exceptional as others in the series have a distinct dominal sterna with fine punctures at middle to carina. moderate punctures at sides, anterior margins Ataenius wenzelii can usually be identified by fluted as usual. Eroded area of pygidium deep with the flat, alutaceous elytral intervals. strong, convex apical margin. Anterior femora with perimarginal groove, smooth and shining, with scattered minute punctures. Middle and hind 62. Ataenius cognatus (LeConte) femora similar but without posterior marginal line. Euparia cognata LeConte, 1858:65. Anterior tibial spur of male not incurved at tip. Ataenius cognatus.—Harold, in Gemminger and Harold, 1869: Posterior tibia and tarsus equal in length; tibial 1066 Horn, 1887:83.—Schmidt, 1922:424.—Fall, 1930: fringe a group of five close setae, short accessory 106—Cartwright, 1948:150. spine, and an intervening seta between accessory DESCRIPTION.—Length 4.0 to 5.9 mm; width 1.9 spine and the fine, slender spurs. First tarsal seg- to 2.5 mm. Black, shining, elongate-oblong, legs ment longer than long spur and longer than the slightly reddish. Head weakly convex; clypeus following three segments combined. broadly rounded each side of moderate median LECTOTYPE (present designation).—LeConte Col- emargination, sides slightly arcuate to right-angled lection, Museum of Comparative Zoology, No. genae, margin finely reflexed; surface lightly trans- 3732. versely wrinkled anteriorly, finely punctate be- TYPE-LOCALITY.—"Texas." The original descrip- tween wrinkles and basal band of moderately tion listed "Texas and Sonora." The lectotype coarse punctures, the fine punctures separated by bears a red disc indicating Texas. one to two times their diameters, the coarse punc- SPECIMENS EXAMINED.—720+. tures by their diameter or less in the band but DATES COLLECTED.—February 16 to November 22. much more separated in occipital area. Pronotum DISTRIBUTION (Figure 14).—Arizona: Chiricahua about one-half wider than long, moderately con- Mts., Huachuca Mts., Paradise, Portal, Yuma. Cali- NUMBER 154 93

FIGURE 23 Distribution of Ataenius wenzelii Horn and A. rudellus Fall. • wenzelii * rudellus fornia: Blythe, Brawley, Calexico (15 mi E), Palo The lack of posterior femoral line and locality Verde, Ripley. Kansas: Manhattan, Wellington. data will quickly distinguish A. cognatus. The Louisiana: Calcasieu Parish. New Mexico: Artesia, male has a patch of moderate, setigerous punc- Cienega Lake, Delhart, Deming, Las Cruces, Me- tures posteriorly on disc of metasternum, lacking silla, Rodeo (18 mi N), Roswell, Socorro, State in the female, and the male pygidium is relatively College. Oklahoma: Lawton. Texas: Amarillo, longer than that of the female. Austin, Bentsen State Park, Big Bend National Biological notes on this species by Hoffman Park, Big Springs, Boca Chica, Brazoria County, (1935) almost certainly refer to A. spretulus or A. Brownsville, Brownwood, Cameron County, Cor- strigatus. pus Christi, Cotilla, Cypress Mills, Dallas, Del Rio, Eagle Pass, Edna, El Paso, Gurley, Harlingen, 63. Ataenius rudellus Fall Hidalgo County, Horkley, Houston, Kerrville, Kingville, Laredo, Lolita, McAllen, Menard, Mis- Ataenius rudellus Fall, 1930:103.—Cartwright, 1948:150. sion, Mountain Home, Nueces River (Zavella County), Pecos, Rio Grande City, San Antonio, DESCRIPTION.—Length 3.9 to 4.5 mm; width 1.7 San Diego, Santa Ava Wildlife Refuge (near to 1.9 mm. Elongate, parallel, shining, black with Alamo), Sharpsburg, Starr County, Uvalde, Val dark reddish legs, only moderately convex. Head Verde County, Victoria, Weslaco, Winter Haven. quite strongly convex, clypeal edge very finely re- REMARKS.—Specimens from northern and east- flexed, broadly rounded each side of shallow ern localities previously considered to be Ataenius median emargination, sides feebly transversely cognatus are usually A. spretulus or A. strigatus. wrinkled anteriorly, very finely, closely punctate 94 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY over greatest convexity to base, frontal-occipital tarsal segment of hind leg and long spur equal area with transverse band of close, moderate punc- in length, slightly longer than next three segments tures at least twice the size of the clypeal punc- combined. Males are recognized by the apically tures, separated by less than their diameters, the hooked spur of the anterior tibia, the 4th abdomi- band of fine clypeal punctures at least as wide as nal sternum shortened at middle to half that of the band of much coarser punctures of the front. the preceding sternum, and by the pygidium being Pronotum about two-thirds as long as wide, sides relatively longer than in the female. and base strongly margined, crenate at anterior HOLOTYPE.—Male, in Fall collection at Museum angles, fimbriate all around, the setae moderate of Comparative Zoology, No. 24771. in length anteriorly to short basally, separated by TYPE-LOCALITY.—St. Petersburg, Florida. about their own lengths; surface everywhere with SPECIMENS EXAMINED.—58. mixed very fine and moderate punctures, the latter DATES COLLECTED.—April 15 to November 14. irregularly spaced, closest halfway to sides where DISTRIBUTION (Figure 23).—Florida: Cleveland, they may be practically contiguous, to a few areas Dade County, Daytona, Everglades National Park, on disc where they may be separated by five or Jacksonville, Key West, Punta Gorda, St. Peters- six times their diameters, the very fine punctures burg, Stock Island (Monroe County), Tampa. are evenly distributed. Elytra two-thirds as wide REMARKS.—Ataenius rudellus is very close to A. as long, sides nearly straight, humeri very mod- wenzelii but is smaller, narrower, always has red erately dentate, striae fine, moderately deep, strial legs, the intervals are slightly convex and not punctures deeply crenating inner margin and very alutaceous or very minutely so. slightly the outer margin of the adjacent intervals; intervals slightly convex, surface minutely aluta- 64. Ataenius californicus Horn ceous, and with scattered minute punctures usually separated by three or four times their diameters; Ataenius californicus Horn, 1887:84.—Fall, 1930:107.—Cart- lateral intervals not different. Mesosternum sha- wright, 1948:151. greened with fine alutaceous sculpture and fine, DESCRIPTION.—Length 3.7 to 5.2 mm; width 1.6 short, close, decumbent hair; weakly carinate be- to 2.1 mm. Piceous, shining, legs rufous, elongate- tween the coxae. Metasternum shining, smooth, oblong, parallel, moderately convex. Head mod- disc with minute punctures separated by four or erately convex; clypeus broadly rounded each side more diameters anteriorly, closer posteriorly, a of wide, moderately deep anterior emargination, little scabrous at extreme sides, midline long and sides nearly straight to slightly more than right- deep, metasternal triangle moderate, not sharply angled genae, edge finely reflexed; surface trans- defined, shining. First visible abdominal sternum versely wrinkled anteriorly, very finely punctate with posterior marginal line, remaining four sterna above median convexity, basal band of close, mod- finely fluted along anterior margin, the fluting erate punctures separated by their diameters or noticeably longer at sides of sterna 2 and 3 and less. Pronotum about one-third wider than long, middle of 5th sternum, surface punctate from side sides arcuate, sides and base strongly margined, to side, very finely at middle to very moderately crenations more noticeable around widely rounded at sides. Pygidium with shiny apical lip, disc posterior angles, marginal setae moderately long, deeply, roughly eroded. Anterior femora with peri- more widely separated anteriorly, shorter and marginal groove, surface smooth, shining, not closer across the base where they are separated closely minutely punctate, occasionally with two by about their own lengths; surface with scattered, or three moderate punctures also. Middle and hind mixed, very fine and very coarse punctures through- femora smooth, shining, very minutely punctate, out, the coarse punctures may be separated by posterior marginal line (best seen from rear) ex- one-half to four or more times their diameters, tending inward from the knee a little less than their diameters about the width of the marginal half the length of the femur. Apical tibial fringe groove, those along anterior margin becoming a of hind tibia .with five setae, a short accessory spine little smaller. Elytra convex, one-third longer than about half the length of the setae, and an inter- wide, sides nearly parallel, humeri only moderately vening seta between the spine and spurs. First dentate; striae deep, crenate-punctate, punctures NUMBER 154 95 separated by four times the width of striae, cre- (Ventura County), Thousand Palms Oasis, West- nations about one-fifth width of interval and only morland. Nevada: Las Vegas, Logandale. Utah: on inner side; intervals very moderately convex, Washington. slightly more strongly convex over apical declivity REMARKS.—The very coarse pronotal punctures, where the striae become wider, strongly shining incurved spur, and the anterior tibia, together but with minute, scattered punctures, lateral in- with far western distribution will help in deter- tervals not different from others. Mesosternum cari- mining this species. nate between coxae. Metasternum smooth and This species has been reported as damaging roots shining, midline strong and deep, discal area finely of seedling sugar beets in California (Coopera- punctate with the posterior punctures very slightly tive Economic Insect Report, USDA 1968, 18 (10): larger and closer, here separated by their diameters, a 15). It has also been reported as "very active as few scattered, barely perceptible, minute punctures a casual feeder on immature flies and excavator outward to sides and in the not sharply defined, of animal dung" (California Agriculture, 1968, depressed triangle, a little scabriculate sculpture at 22 (6): 1-4). extreme sides. Abdominal sterna with widely scat- tered, very fine punctures at middle, outer third with increasingly close, coarse punctures to sides 65. Ataenius strigatus (Say) where they are separated by their diameters or Aphodius strigatus Say, 1823:212.—Haldeman, 1848:106. less, anterior margins fluted, the fluting gradually Ataenius strigatus.—Harold, in Gemminger and Harold, 1869: wider on each sternum to the 5th sternum where 1067—Horn, 1887:82.—Schmidt, 1922:428.—Fall, 1930: they are nearly half as long as the sternum. Py- 101.—Cartwright, 1948:151. gidial median eroded area scabrous over alutaceous DESCRIPTION.—Length 3.6 to 5.5 mm; width 1.6 surface. Anterior femora with perimarginal groove; to 2.4 mm. Elongate-oblong, shining, black, legs surface shining, smooth, with a few scattered, fine and margin of clypeus reddish black, moderately to very moderate punctures. Middle and hind convex. Head convex, finely reflexed margin of femora smooth, shining, with scattered fine punc- clypeus broadly rounded each side of wide, shallow tures separated by four or five times their diame- median emargination, sides nearly straight to ters, posterior femoral line fine one-fourth to sharply rounded, right-angled genae; anterior one-third distance from knee to trochanter and three-fourths of clypeal surface finely transversely usually best seen from rear. Posterior tibial fringe wrinkled, very finely punctate above, the punctures a group of five setae, a short accessory spine, an separated generally by about twice their diameters; intervening seta, and very slender spurs. Long front with transverse band of moderate punctures spur, first tarsal segment, and following three seg- separated by their diameters, a little less numerous ments combined subequal in length. Hind tarsus on occiput. Pronotum about three-fourths as long subequal to tibia, middle tarsus slightly longer as wide, sides nearly straight and parallel, anterior than its tibia. Males have the spur of the anterior angles obtusely rounded, posterior angles widely tibia hooked inward, the 5th abdominal sternum rounded, sides and base strongly margined, edge shortened medially and the pygidium longer dorso- fimbriate-crenate at anterior and posterior angles, ventrally. the short, inconspicuous setae separated by more HOLOTYPE.—Academy of Natural Sciences of than their lengths, crenations noticeable only at Philadelphia, No. 3613. posterior angles, middle of sides without setae, base TYPE-LOCALITY.—San Bernardino, California. arcuate; surface with mixed very fine and coarse SPECIMENS EXAMINED.—160+ . punctures, the fine punctures everywhere evenly DATES COLLECTED.—January 23 to October 28. distributed, the coarse punctures finer over middle DISTRIBUTION (Figure 9).—Arizona: Cibola anterior disc, larger and denser outward to sides and (Yuraa County), Douglas, East Bridge, Gila Bend, base where they may be practically contiguous, gen- Maricopa County, San Luis, Yuma. California: erally separated by their diameters more or less on Berkeley, Blythe, Brawley, Calexico, Calipatria, disc. Elytra approximately five-eighths as wide as Deep Canyon (Riverside County), El Centro, Holt- long, humeri strongly dentate, striae fine, deep, the ville, Indio, Needles, Palm Springs, Salton, Simi strial punctures crenating the sides of the weakly 96 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY convex intervals, more strongly on inner sides, lat- near River Cave, Selma. Arizona: Pajarita Mts., eral intervals not different, surface with very fine, Pena Blanca, Santa Cruz County. Arkansas: Devils scattered punctures. Mesosternum shagreened, finely, Den State Park, Fayetteville, Hartford, Hope, closely sculptured, with very fine, short, appressed Tuckerman (Jackson County), Washington Coun- inconspicuous hair, carinate between the coxae. ty, West Memphis. Connecticut: Cornwall, Suffield. Metasternum shining, midline strong and deep, Delaware: Delaware City, Dover, Glasgow, Middle- disc and outward to sides with scattered, very fine town, Newark, New Castle County, Ship John punctures separated by four or more diameters, Light House, Smyrna, Sussex County, Wilming- fine rough sculpture at extreme sides, metasternal ton. District of Columbia: Washington. Florida: triangle strong with rounded edges, minutely Daytona Beach, Wewahitchka. Georgia: Augusta, roughened within. First visible abdominal sternum Griffin. Illinois: Blue Mound, Bridgeview, Cale- with fine posterior marginal line, next four sterna donia, Carbondale, Carterville, Champaign, Chi- with successively longer, fine fluting along anterior cago, Crab Orchard, Crete, Des Plaines, Dongola, margins, fluting of 5th sternum only slightly longer Du Page County, Evanston, Farina, Glenview, than preceding and not much longer at middle, Grayslake, Havana, Illinois Beach State Park, nearly even from side to side; surface of middle Kickapoo State Park, Lake Michigan Beach, Lo- sternum moderately finely, closely punctate at mid- renzo Rd. Prairie (Grundy County), McBride, dle, gradually coarse and shallow outward to sides New Lennox, Peacock Prairie, Quincy, Roseville, where the punctures are separated by less than Union County, Urbana, Vandalia, Wailanda. In- their diameters, 5th sternum with slightly larger, diana: Athens, Bear Willow, Beverly Shores, Bog, fine punctures at sides and with a large elongate Clayton, Dune Acres, Dunes Park Beach, Fort puncture or pore at extreme side. Pygidium with Wayne, Grantsburg, Hamlet, Hovey Lake, In- shining, convex, apical lip, disc finely, roughly dianapolis, Knox County, Lafayette, Marion eroded. Anterior femora with strong perimarginal County, Menominee, Miller, Owen County, Perry groove, surface smooth, shining anteriorly, pos- County, Porter County, Putman County, Rich- teriorly closely, roughly, moderately punctate, the mond, Starke County, Tippecanoe County, Tre- punctures tending to form short, irregular, trans- mount, Turkey Run State Park, Vigo County, verse lines. Middle and hind femora shining, Vincennes, Wabash County, Whiting. Iowa: Ames, smooth, with scattered, very fine punctures sep- Bedford, Boone, Burlington, Cherokee, Davenport, arated by three or four times their diameters, Davis County, Des Moines, Eddyville, Estherville, strong posterior marginal line over slightly more Floris, Gilbert, Grand Junction, Guttenberg, than half of the femur to knee. Coarse setigerous Henry County, Independence, Iowa City, Jackson punctures usually lacking at knee, rarely a single County, Jefferson County, Keokuk, Lake Okaboji, puncture. Apical fringe of posterior tibia a group Ledges State Park, Leon, Lyon County, Marshall of five setae, a strong accessory spine, and an inter- County, Mount Pleasant, Osage, Polk City, Scott vening setae between spine and spurs. Metatarsal County, Shenandoah, Shimek, Solon, Store State segment longer than long spur and longer than Park. Kansas: Argentine, Coffee County, Douglas following three segments combined. Males have County, Lawrence, T. Gardner Lake (Johnson a group of moderate, setigerous punctures at County), Topeka. Kentucky: Anchorage (Jefferson middle each side of midline of the metasternum, County), Bee Spring, Benton, Cadiz, Corbin, Fort the pygidium is longer, with the median part of Knox, Hodgenville, Jackson, Lexington, Louis- the apical lip much wider than in the female. ville, Mammoth Cave National Park, Wolf Creek NEOTYPE (present designation).—Male, USNM Lake (Wayne County). Maine: Anson, Monmouth, No. 71751. Orono. Maryland: Baltimore, Beltsville, Cabin TYPE-LOCALITY.—Pennsylvania, 5 mi NW of John, Chesapeake Beach, Chevy Chase, Colesville, Davidsburg; 9 September 1968, Paul J. Spangler. College Park, Contee, Deer Park, East Riverdale, SPECIMENS EXAMINED.—1500+. Edgewood, Gambrelles, Glen Echo, Glover, Han- DATES COLLECTED.—February 9 to December 28. cock, Hebbville, Hyattsville, Jackson's Island, Ken- DISTRIBUTION (Figure 8).—Alabama: Florence, wood Beach, Largo, Marlboro, Patuxent Wildlife Grant, Marshall County, Monte Sano State Park, Research Center, Plummers Island, Plum Point, NUMBER 154 97

Reisterstown, Salisbury, Shelltown, Tacoma Park, Point, Fort Thomson, Highmore, Martin, Oak Thurmont, Timonium, Upper Marlboro. Massa- Lake, Paulson (Lincoln County), Pumpkin Center chusetts: Billerica, Brookline, Groton, Mont- (Minnehaha County), Vermilion, Yankton. South gomery. Michigan: Agricultural College, Allegan Carolina: Belton, Cayce, Charleston, Chesterfield County, Bay County, Berrien County, Bridgeman County, Clemson, Columbia, Florence, Gramling, Warren Dunes, Clinton County, East Lansing, Greenville, Jenkinsville, Lancaster, Marion, Mc- Galen, Genessee County, Haitland (Lexington Cormick, Mountain Rest, Ritter, Summerville, County), Ingham County, Isabella County, Kala- Tigerville, Union County, Winnsboro, Yemassee, mazoo County, Lakeside, Marquette, Mason York. Tennessee: Burrville, Cardwell Mtn., Cooke- County, Midland County, Port Huron, Saginaw, ville, Harrison Bay State Park, Jackson, Lebanon, Saugatuck, Self ridge Field, Van Buren County, Nashville, Reelfoot Lake. Texas: Austin, Brazos, Washtenaw County, Whitmore Lake. Minnesota: College Station, Columbus, Dallas. Utah: Logan Buffalo, Faribault, Whitewater State Park (Winona County. Vermont: Burlington, Shelburne, South County). Missouri: Clarksville, Columbia, Devils Burlington. Virginia: Accomac, Arlington, Ash Elbow, Jefferson City, Louisiana, Midway, Pawnee, Grove, Basye, Blacksburg, Chatham, Delaplane, Poplar Bluff, St. Joseph, St. Louis, Steelville, Stod- Detrick (Shenandoah County), Dumfries, Falls dard County, Vernon County, Warren ton, Willard. Church, Holland, Hunters Station (Fairfax Coun- Nebraska: Bennet, Fairmont, Lancaster County, ty), Lignum, Maryland, Middleburg, Natural Lincoln, Malcolm, West Point. New Hampshire: Bridge, Newark, Paris, Pennington Gap, Piney Rumney. New Jersey: Amy Mtn., Avenel, Boon- Run, Powell Gap (Jefferson National Forest), St. ton, Browns Mills, Five Mile Beach, Hadden Paul, Straight Creek, Trammells Landing, West- Heights, Hillside Manor, Medford, Morristown, moreland State Park, Westville, Wildcat Moun- Montvale, New Brunswick, New Lisbon, Prosper- tain (Fauquier County). West Virginia: Kanawha, town, Riverton, Salem, Upper Plains, Woodbury. Kearneysville, Maysville (5 mi SE), Orkney New York: Chafee, Dryden, Ithaca, Olcott, Oswego, Springs, Wardensville. Wisconsin: Albany, Fond Potsdam, Rochester, Rockaway Beach, Utica, West du Lac, Kenosha, Madison, Milwaukee, Nekoosa Point, Wyers Point. North Carolina: Balsam, Black (Wood County), Platteville, Racine, Somers. Mtns. Cataloochee Divide, Cedar Mtn., Charlotte, Wyoming: Bridge Basin. Canada: Ontario: Ham- Raleigh, Sunburst, Waynesville. Ohio: Ada, Adams ilton County, East View, Hull, Point Pelee, Jean- County, Ashland, Athens County, Champaign pettles Creek (Kent County), Leamington, Long County, Cincinnati, Cleveland, Columbus, East Point, Norfolk County, Ottawa, Rondeau Prov. Harbor State Park, Erie County, Franklin County, Park, Tillbury, Wentworth, Wheatley, Windsor. Greenville, Heidelberg, Holgate, Hudson, Ma- Quebec: Berthierville, Como, La Trappe, Laval rietta, Miami County, Ottawa County, Portsmouth, Rap, Lonquenil, Montebello, Montreal, Mount Preble County, West Alexandria, Wooster. Okla- St. Bruno (Chambly Pr.), Oka, Regaud, "St. J. homa: Willis, Woodward. Oregon: "Or." Pennsyl- Chrisost," St. Placids. vania: Arcola, Bellefonte, Broomall, Buena Vista REMARKS.—Ataenius strigatus (Say) is the first Springs (Franklin County), Canadensis, Chester, described American Ataenius and has the second Clarks Valley, Davidsburg (5 mi W), Delaware widest distribution. I have seen specimens from Water Gap, Easton, Erie, Forest County, German- all but ten—mostly far western—states. The rough- town, Harrisburg, Hecton Mills, Howard, Hum- ly punctate anterior femora together with dense melstown, Jeanette, Jefferson County, Lake Merion, punctures at sides of the pronotum distinguish Lima, Long Pond, Maryville, Media, Nanticoke, the species. New Alexandria, New Cumberland, Nottingham, Say's type, presumably lost, probably came from Olney, Parkasie, Pen Mar, Philadelphia, Pitts- Pennsylvania. See Fall (1930:101) for discussion burgh, Pocono Mts., Secane, Sharpsville, State Col- concerning identity of the species. I agree fully lege, Stony Creek Mills, Sumneytown, West with Fall's conclusion and select as neotype a Fairview, Wilmerding, York, Youngstown, Upper specimen from the area in which Melsheimer and Darby. South Dakota: Brookings, Chamberlin, Elk others made many early collections. 98 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY 66. Ataenius apicalis Hinton or four coarse punctures at knee, and postfemoral Ataenius apicalis Hinton, 1937b:195.—Cartwright, 1948:151. line half the distance from knee to trochanter. Posterior tibiae with strong accessory spine, fringe DESCRIPTION.—Length 4.1 to 4.9 mm; width 1.7 of six setae together and another between ac- to 2.4 mm. Oblong, moderately convex, shining, cessory spine and spurs, first tarsal segment about black. Head slightly convex, clypeus broadly, shal- one-fourth longer than long spur, about same lowly emarginate, rounded each side of emargina- length longer than following three segments com- tion, sides nearly straight to right-angled genae, bined. margin finely recurved, surface weakly transversely HOLOTYPE.—USNM 68188. rugulose over anterior third, middle finely punc- TYPE-LOCALITY.—Mexico: Vera Cruz, Minatitlan. tate, punctures separated by slightly more than SPECIMENS EXAMINED.—150+ . their diameters, gradually finer and closer just in DATES COLLECTED.—March 16 to December 10. front of basal band of close moderate punctures DISTRIBUTION (Figure 16).—Alabama: Black which are generally separated by less than their Warrior National Forest, Monte Sano State Park, diameters. Pronotum rectangular, anterior angles Sheffield, Trinity. Arkansas: Cohan Plant, Devils obtusely rounded, posterior angles broadly rounded, Den State Park, Hart Ford, Little Rock, Stuttgart, margined laterally and basally, marginal setae Taylor, Tuckerman, Washington County. Dela- rather short, about as long as width of marginal ware: "Delaware." Florida: Torreya State Park groove and separated by two or more times their (Liberty County). Georgia: Arlington, Atlanta, lengths; surface throughout with close, mixed Mount Berry, Newton. Illinois: Dongola (Union punctures, the larger punctures closer laterally, County), Olive Branch. Indiana: Hovey Lake especially in the angles where separated by less (Posey County). Kansas: Lawrence. Kentucky: An- than their diameters, scattered on disc where sep- chorage (Jefferson County), Arora (Monroe Coun- arated by one to several times their diameter, ty). Louisiana: Calcasieu, Copley, Fount, Harahan, gradually slightly finer anteriorly; fine punctures Lafayette, New Orleans, Pilate Opelousas, Sims- noticeable throughout. Elytra 2.6 times length of boro (Lincoln Parish). Maryland: Beltsville, Col- pronotum, moderately convex, basally margined, lege Park, Edgewood, Hancock. Michigan: Allegan. humeri weakly dentate, sides subparallel; striae Mississippi: Madison County, Pearl. Missouri: Dar- fine, crenate-punctate, slightly wider apically; in- dene Prairie. Nebraska: Lincoln. North Carolina: tervals moderately convex, minutely punctate, Wake County. Ohio: Athens, Franklin County, apically eroded each side; lateral intervals not Scioto County. Pennsylvania: Philadelphia Neck. different. Mesosternum shagreened, close, fine, South Carolina: Anderson County, Cherokee Coun- short decumbent hair, carinate between the coxae. ty, Clemson, Clinton, Florence, Lancaster, Mc- Metasternum smooth, shining, midline fine, mod- Cormick, Pee Dee, Union County. Tennessee: erately deep, with scattered, minute punctures ex- Citico, Cookeville, Jackson, Memphis, Oak Ridge. cept for a few occasionally moderate punctures Texas: Anderson County, Devers, Harris County, posteriorly, a little scabriculate sculpture at ex- Liberty County, Orange County, Seabrook. Vir- treme sides, metasternal triangle smooth, very mod- ginia: Arlington, Paris, Richmond. West Virginia: erate in depth. Abdominal sterna with rather close, Kanawha. fine to moderate punctures from side to side, REMARKS.—Ataenius apicalis Hinton is one of deeper at sides, separated by about their diameters, the strigatus complex of species and may easily sterna finely fluted in front. Eroded area of py- be misidentified; however, it is larger than A. gidium roughly scabriculate, apical margin smooth, strigatus, the anterior femur has three large, strong, convex, shining. Anterior femora with perimargi- elongate punctures at extreme edge below the tibial nal groove, shining, quite evenly punctate, the insertion, the posterior femur has a row of three punctures finer in front, posteriorly separated by or four coarse setigerous punctures at the knee, their diameters, three large elongate punctures usually has six setae in the posterior tibial fringe, along edge below tibial insertion. Middle and hind and apically the elytral intervals are noticeably femora much alike with very fine, scattered, nu- eroded on each side. Ataenius strigatus is usually merous punctures, hind femora with a row of three without coarse setigerous punctures at the knee, NUMBER 154 99 rarely with single punctures, and rarely shows a half the length of the femur. Posterior tibia with trace of apical erosion on elytral intervals over intervening seta between spurs and the strongly the elytral declivity. Ataenius apicalis is widely developed accessory spine, six setae in terminal distributed in eastern states but is not a very com- fringe between accessory spine and outer apical mon species. angle, first joint of posterior tarsus longer than long spur and subequal to remaining four joints combined. 67. Ataenius fattigi Cartwright Female: Length 5.4 mm; width 2.4 mm. Similar Ataenius fattigi Cartwright, 1948:151. to holotype male except that the coarse punctures of the pronotum are not quite so numerous, the DESCRIPTION.—Holotype Male: Length 4.8 mm; metasternum is finely punctate without the group width 2.25 mm. Oblong, shining, black, legs brown- of coarse punctures, the pygidium is not as long, ish piceous. Head moderately convex, a wide band and the hind tibiae bear a fringe of seven setae of coarse, closely placed punctures across the base, on one and eight on the other. very fine, close punctures over front and clypeus, HOLOTYPE.—USNM 58821. very faint traces of transverse rugulosity perceptible TYPE-LOCALITY.—Georgetown County, South at anterior edge of clypeus. Clypeus widely shallowly Carolina, at junction of highways U. S. 17 and emarginate, broadly rounded each side, the edge South Carolina 786 to Belle Isle Gardens. finely reflexed. Pronotum rectangular, three-tenths SPECIMENS EXAMINED.—318. wider than long, marginal line of sides and base DATES COLLECTED.—February 8 to November 1. deep and entire, edge not crenate, anterior angles DISTRIBUTION (Figure 21).—Delaware: Rehoboth obtusely rounded, posterior angles obtuse but dis- Beach. District of Columbia: Washington. Florida: tinct, surface with intermixed coarse and very fine Archbold Biological Station, Austin Carey Me- punctures throughout, the coarse punctures slightly morial Forest, Avon Park, Blountstown, Canal smaller and less closely placed anteriorly at middle, Point, Chipley (5 mi E), Crestview, Dunedin, En- dense at sides, especially in anterior angles where terprise, Fort Myers, Gainesville, Gunntown, High- they are separated by less than their diameters lands State Park, Jacksonville, Kissimmee, Knights but are not confluent. Elytra one-fourth longer Key, La Belle, Lake Alfred, Lake Lucy, Levy than wide, sides parallel, humeri strongly dentate, County, Little Manatee River, Marianna, Merritt striae strong, crenately punctate, intervals almost Island, Molino, Monticello, Moore Haven, Ocala flat on disc, only strongly convex at apex, all inter- National Forest, Ochopee, Okeechobee, Oldtown, vals similarly sparsely, minutely, rather irregularly Olustee, Orlando, Punta Gorda, Sanford, Sarasota, punctate. Mesosternum with a moderately long Tampa, Torreya State Park, Volusia County, West intercoxal carina. Metasternum with a little coarse, Palm Beach, Westville, Wewahitchka, Zolfo rugose sculpture at extreme sides, otherwise shin- Springs. Georgia: Calhoun County, Hinesville, ing and finely punctate, a group of a dozen or so Nashville (17 mi E on Alapaha River), Newton, coarse punctures posteriorly each side of the deeply Valdosta, Vidalia, Waycross. Maryland: Edgewood, impressed longitudinal median line, the median Glen Burnie, Shelltown. Massachusetts: Billerica. line deeper at each end and not abruptly termi- Michigan: Detroit. Mississippi: Keesler Field (Bi- nated. Abdominal sterna fluted in front, coarsely loxi), Long Beach, Lucedale, Ocean Springs. New punctate at sides, the punctures gradually finer Jersey: Anglesea, Atlantic City, Atsion, Prosper- across the middle. Profemurs with perimarginal ton, Salem, Sea Island City, Wildwood. New York: groove, the posterior face closely, coarsely punc- Rockaway Beach. North Carolina: Swan Quarter. tate, the punctures becoming rapidly finer toward Pennsylvania: Philadelphia. Rhode Island: North the base and lower edge. Anterior tibiae weakly Kingston. South Carolina: Aiken State Park, crenate above upper tooth, which is nearer apex Berkeley County, Bethune, Blackville, Blaney, than base; first tarsal joint subequal to following Cayce, Charleston, Columbia, Darlington County, two joints combined, first two tarsal joints to- Florence, Georgetown County, Green Pond, Hamp- gether and spur equal in length. Middle and pos- ton, Kline, Meredith, Ritter, Saluda County, Sea- terior lemurs finely punctate, marginal line deep, brooks Island, Summerville, Walterboro, Yemassee. 100 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 24.—Aedeagi of six species of Ataenius: a, c, A. inquisitus Horn; b, d, A. chapini Hinton; e, g, A. griffini, new species; /, h, A. convexus Robinson; i, j, A. aequalis Harold; k, I, A. platensis (Blanchard).

Texas: Conroe. Virginia: Fort Monroe, Mount strigatus (Say) but is usually larger, the transverse Vernon. West Virginia: Kanawha. Wisconsin: wrinkles of the clypeus are very weak or absent, Wood County. the coarse punctures in the anterior angles of the REMARKS.—Ataenius fattigi is very close to A. pronotum are close but rarely confluent, the setae NUMBER 154 101 between the accessory spine and outer angle of the punctures in the anterior angles of the pronotum posterior tibia number six or seven, and most of are confluent, the setae of the posterior tibia num- the specimens seen have been from southern states. ber four or five, and the species has a more Ataenius strigatus is smaller, clypeal rugulosity is northern distribution. more extensive and noticeable, at least a few coarse

Literature Cited Arrow, Gilbert John Brimley, Clement Samuel 1903. On the Lanorostict Lamellicorn Coleoptera of Gre- 1942. Supplement to Insects of North Carolina. 39 pages. nada and St. Vincent (West Indies). Transactions North Carolina Department of Agriculture. of the Entomological Society of London for the Brown, Williamson James Year 1903, pages SU9-520. 1927. Two New North American Genera of the Tribe Austin, E. P. Eupariini (Coleoptera). Canadian Entomologist, 1880. Supplement to the Check List of the Coleoptera of 59:288-290. America North of Mexico. 67 pages. Boston. 1928. Studies in the Scarabaeidae, 1. Canadian Entomolo- Balthasar, Vladimir gist, 60:301-307. 1938. Zweiter Beitrag zur Kenntnis der neotropischen Scarabaeiden. Arbeiten iiber morphologische und 1930. Studies in the Scarabaeidae, 4. Canadian Entomolo- taxonomische Entomologie aus Berlin-Dahlem, 5(1): gist, 62:2-6. 55-61. 1932. New Species of Coleoptera, 3. Canadian Entomolo- 1941. Neue Arten der coprophagen Scarabaeiden aus gist, 64:3-12. dem Hamburger Zoologischen Museum. 65 Beitrag Cartwright, Oscar Ling zur Kenntnis der Scarabaeiden, Col. Zoologischen 1934. A New Ataenius from Florida. Canadian Entomolo- Anzeiger, 133(7/8): 161-171. gist, 66:200-201. 1952. Quelques scarabaeides nouveaux de l'Asia orientale. 1939. Eleven New American Coleoptera. Annals of the Ada Soctetatis Entomologicae Cechosloveniae, 49(4): Entomological Society of America, 32(2): 353-364. 222-228. 1941. Concerning the Distribution of Ataenius miamii 1960. Beitrage zur Kenntnis der Insektenfauna Boliviens Cartw. Bulletin of the Brooklyn Entomological So- Teil 13. Coleoptera 12. Neue Aphodiinae-Arten. ciety, 36(1):33. Opuscula Zoologica, 48:1-7. 1943. Synonyms of Ataenius spretulus (Hald.). Bulletin Bates, Henry Walter of the Brooklyn Entomological Society, 38(3): 108. 1886-1890. Pectinicornia and Lamellicornia. Part 2 of 1944. New Scarabaeidae from United States. Annals of volume 2 in Godman and Salvin, editors, Biologia the Entomological Society of America, 37(l):28-36. Centrali-Americana. 432 pages, 22 plates. 1945. Ataenius darlingtoni Hinton a Synonym of A. Blackburn, Rev. T. salutator Fall. Bulletin of the Brooklyn Entomo- 1904. Revision of the Australian Aphodiides and Descrip- logical Society, 40(2):47. tions of Three New Species Allied to Them. Pro- 1948. Ataenius strigatus (Say) and Allied Species in the ceedings of the Royal Society of Victoria, new series, United States. Transactions of the American En- 17:145-181. tomological Society, 74:147-153. Blackwelder, Richard Eliot 1951. New Synonymy in the Aphodiini of the United 1939. Fourth Supplement 1933-1938 (Inclusive) to the States. Coleopterists' Bulletin, 5(2):29-30. Leng Catalogue of Coleoptera of America, North 1952. Aphotaenius, a New Genus of Dung Beetle. Pro- of Mexico. 146 pages. Mount Vernon, N. Y. ceedings of the United States National Museum, Blackwelder, Richard Eliot, and Ruth M. Blackwelder 102(3295): 181-184. 1948. Fifth Supplement 1939 to 1947 (Inclusive) to the 1958. Another Old Record of Aphotaenius carolinus (Van Leng Catalogue of Coleoptera of America, North of Dyke). Proceedings of the Entomological Society Mexico. 87 pages. Mount Vernon, N. Y. of Washington, 60(3):134. Blatchley, Willis Stanley 1963. Two New Beetles of the Genus Aphotaenius. 1928. Notes on Some Florida Coleoptera with Descrip- Coleopterists' Bulletin, 17(2):49-51. tions of New Species. Canadian Entomologist, 60: 1964. Lectotype Designations and New Synonymy in the 60-73. Genus Ataenius. Coleopterists' Bulletin, 18:101-104. Blanchard, Charles Emile 1846. Pages 105-122 in Blanchard and Brulle, Insectes 1968. Field Notes. Coleopterists' Bulletin, 22(1):27. de l'Amerique Meridionale recueillis par Alcide Cartwright, Oscar Ling, and Robert Gordon d'Orbigny. Part 2 in volume VI of Voyage dans 1971. Insects of Micronesia, Coleoptera: Scarabaeidae. fAmerique meridionale. ... 32 plates. Paris and Bernice P. Bishop Museum, Insects of Micronesia, Strasbourg. 17(4):257-296. 102 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Chapin, Edward Albert 1880. Verzeichniss der von E. Steinheil in New-Granada 1940. A Revision of the West Indian Beetles of the gesammelten coprophagen Lamellicornien. Stettiner Scarabaeid Subfamily Aphodiinae. Proceedings of Entomologische Zeitung, 41:13-46. the United States National Museum, 89(3092): 1-41. Henshaw, Samuel Chevrolat, Louis Alexandre Auguste 1885. List of the Coleoptera of America, North of Mexico. 1864. Coleopt^res de l'lle de Cuba. Notes, synonymies et 161 pages. American Entomological Society, Phila- descriptions d'especes nouvelles. Annales de la delphia. Societe Entomologique de France, 4:405-417. 1887. First Supplement to the List of Coleoptera of Crotch, George Robert America, North of Mexico. 8 pages. Brooklyn En- 1874. Check List of the Coleoptera of America, North of tomological Society, Brooklyn, N.Y. Mexico. 136 pages. Salem, Mass. 1889. Second Supplement to the List of Coleoptera of Dejean, Compte Pierre F. M. A. America, North of Mexico, Together with Biblio- 1836. Catalogue des Coleopteres de la collection de M. Le graphical References to Synopses, Monographes, Compte Dejean. Third edition, xiv + 499 pages. etc. Published Since the "Classification." 14 pages. Fabricius, Johann C. Brooklyn Entomological Society, Brooklyn, N. Y. 1775. Systema Entomologiae. 832 pages. Flensburgi et 1895. Third Supplement to the List of Coleoptera of Lipsiae. America, North of Mexico. 62 pages. American En- Fall, Henry Clinton tomological Society, Philadelphia, Pa. 1909. New Coleoptera from the Southwest, IV. Canadian Hinton, Howard Everest Entomologist, 41:161-170. 1934. A New Name for Ataenius consors Fall. Canadian 1930. On Ataenius strigatus Say and Allied Species. Entomologist, 66:119. Journal of the New York Entomological Society, 1937a. Ataenius chapini, sp. n., from Mexico. Proceedings 38:93-108. of the Entomological Society of Washington, 39:3-8. Fall, Henry Clinton, and Theodore Dru Allison Cockerell 1937b. Descriptions of New American Ataenius, with Notes 1907. The Coleoptera of New Mexico. Transactions of on Others. Annals and Magazine of Natural His- the American Entomological Society, 33:145-272. tory, 20:177-196. Gemminger, Max, and Edgar von Harold Hoffman, Clarence H. 1869. Scarabaeidae. Pages 979-1346 in volume 4 of Cata- 1935. Biological Notes on Ataenius cognatus (Lee), a New logus coleopterum hucusque descriptorum synon- Pest of Golf Greens in Minnesota. Journal of ymicus et systematicus. Monachii. Economic Entomology, 28:666-667. Haldeman, Samuel Stehman Horn, George Henry 1848. Descriptions of North American Coleoptera, Chiefly 1871. Synopsis of Aphodiini of the United States. Trans- in the Cabinet of J. L. LeConte, M.D., with Refer- actions of the American Entomological Society, S: ence to Described Species. The Journal of the 284-297. Academy of Natural Sciences of Philadelphia, 1875. Synonymical Notes and Descriptions of New Species 1:95-110. of North American Coleoptera. Transactions of Harold, Edgar von the American Entomological Society, 5:126-156. 1867a. Die chilenischen Aphodiden. Berliner Entomol- 1887. A Monograph of the Aphodiini Inhabiting the ogische Zeitschrift, 11:278-282. United States. Transactions of the American En- 1867b. Diagnosen neuer Coprophagen vom Herausgeber. tomological Society, 14:1-110. Pages 76-84 in number 5 of volume I in Coleopter- Jerath, Monohar Lai ologische Hefte. Munich. 1960. Notes on Larvae of Nine Genera of Aphodiinae in 1867c. Diagnosen neuer Coprophagen vom Herausgeber. the United States. Proceedings of the United States Pages 94-100 in number 5 of volume II in Coleop- National Museum, 111(3425):43-94. terologische Hefte. Munich. LeConte, John Lawrence 1868. V, Diagnosen neuer Coprophagen. Pages 80-86 in 1858. Description of New Species of Coleoptera, Chiefly volume III of Coleopterologische Hefte. Munich. Collected by the United States and Mexican 1869. VIII, Diagnosen neuer Cophrophagen vom Heraus- Boundary Commission under Major W. H. Emory, geben. Pages 95-104 in volume V in Coleopterolo- U.S.A. Proceedings of the Academy of Natural gische Hefte. Munich. Sciences of Philadelphia, 10:59-89. 1874a. Ueber die Ataenius-Arten mit gezabuten Kopfs- 1863-1866. List of the Coleoptera of North America. childe. Pages 15-25 in volume XII in Coleopterolo- Part I. Smithsonian Miscellaneous Collections, gische Hefte. Munich. 4(140): 1-78. 1874b. Beschreibung zweier neuer Aphodius-Arten. Ber- 1878. Additional Descriptions of New Species. In E. A. liner Entomologische Zeitschrift, 18:174-176. Schwarz, The Coleoptera of Florida. Proceedings 1876. Notice sur les aphodiides recueillis par M. Camille of the American Philosophical Society, 17:373-434. Van Volxem dans rAmerique du Slid. Compte- Leng, Charles William rendus des Seances de la Societe Entomologique de 1920. Catalogue of the Coleoptera of America, North of Belgique, 1876:93-99. Mexico. 470 pages. Mount Vernon, N.Y. NUMBER 154 103

Leng, Charles William, and Andrew Johnson Mutchler 1948. Remarks on a Few Scarabaeidae. Entomological 1927. Supplement 1919 to 1924 (Inclusive) to Catalogue News, 59:175-177. of the Coleoptera of America, North of Mexico. 78 Say, Thomas pages. Mount Vernon, N.Y. 1823. Descriptions of Coleopterous Insects Collected in 1933. Second and Third Supplements 1925 to 1952 (In- the Late Expedition to the Rocky Mountains, Per- clusive) to Catalogue of the Coleoptera of America, formed by Order of Mr. Calhoun, Secretary of War, North of Mexico. 112 pages. Mount Vernon, N.Y. under the Command of Major Long. Journal of Linell, Martin Larssen the Academy of Natural Sciences of Philadelphia, 1896. New Species of North American Coleoptera of 3:139-216. the family Scarabaeidae. Proceedings of the United Schmidt, Adolf States National Museum, 17:721-731. 1910. Eine Serie neuer Aphodiinen. Stettiner Entomolo- Melsheimer, Friedrich Ernst gische Zeitung, 72:3-51. 1845(1844). Descriptions of New Species of Coleoptera of 1917(1916). Namenanderungen und Beschreibung neuer the United States. Proceedings of the Academy oj Aphodiinen. Archiv fur Naturgeschichte, 82:95- Natural Sciences of Philadelphia, 2:134-160. 116, illus. 1953. Catalogue of the Described Coleoptera of the 1922. Aphodiinae. Part 45 in Das Tierreich. 614 pages. United States. Revised by Samuel Stehman and Berlin and Leipzig. John Lawrence LeConte. xvi + 174 pages. Wash- Solier, Antoine Joseph Jean ington, D.C.: Smithsonian Institution. 1851. Orden III, Coleopteros. Pages 1-285 in volume 5 Nakane, Takehiko in C. Gay, Historia fisica y politico de Chile. 1961. Notes on Some Aphodiinae from Micronesia (Cole- Steinheil, Edoardo optera: Scarabaeidae). Scientific Report, Kyoto 1874(1872). Symbolae ad historian coleopterorum Argen- Prefecture University (Natural Science and Living tinae meridionalis, ossia enumerazione dei coleotteri Science), series A, 3(3): 151-152 (25-26). reccolti dal prof. Strobel nell'Argentina meridionale, Nomura, Sizumu e descrizione della species nouove. Atti delta Societa 1943. Zur Kenntnis des Aphodiiden aus Mikronesien. Italiana di Scienze Naturali, 15:544-578. Mushi, 15:77-83, 1 plate. Sturm, Jacob Paulian, Renaud 1843. Catalog der Kaefer-Sammlung. 386 pages. Niirnberg. 1947. Scarabaeoidea. Pages 17-84 in volume 1 of part VII Van Dyke, Edwin Cooper (Coleopteres des Antilles) in Faune de I'Empire 1928. Notes and Descriptions of New Species of Scarabaei- Francois. dae from Western North America. Pan-Pacific En- Petrovitz, Rudolf tomologist, 4:151-162. 1962. Neue und verkannte Aphodiinae aus alien Erd- Wollaston, T. Vernon teilon. Entomologische Arbeiten aus dem Museum 1854. Insecta Maderensia, Being an Account of the In- G. Frey, 13:101-131. sects of the Islands of the Maderan Group. 634 Robinson, Mark Packard Mills pages, illustrated. London. 1940. Studies in the Scarabaeidae, II. Transactions of the Wray, David L. American Entomological Society, 66:141-159. 1967. Insects of North Carolina. Third supplement. 181 1947. Notes on a Few Scarabaeidae. Entomological News, pages. Raleigh: North Carolina Department of 58:149-151. Agriculture. 104 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

PLATK 1.—Dorsal views: a, Pseudataenius contortus, new species; b, Ataenius simulator Harold. NUMBER 154 105

a

PLATE 2.—Dorsal views: a, Ataenius insculptus Horn (wavy line at bottom represents surface of elytrae in cross section); b, Ataenius superficialis, new species. 106 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

PLATE 3.—Dorsal views: a, Ataenius stephani, new species; b, Ataenius lobatus Horn.

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