OLIVER S. FLINT, Studies of Neotropical , XIII: The from and Central America (Trichoptera: i )

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY NUMBER 118 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 4. 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 profes- sional colleagues at other institutions of learning. These papers report newly acquired facts, synoptic interpretations of data, or original theory in specialized fields. These publications are distributed by mailing lists to libraries, laboratories, and other in- terested 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 118

Oliver s. Flint, jr. Studies of Neotropical Caddisflies, XIII: The Genus Ochrotrichia from Mexico and Central America (Trichoptera: Hydroptilidae)

SMITHSONIAN INSTITUTION PRESS CITY OF WASHINGTON 1972 ABSTRACT Flint, Oliver S., Jr. Studies of Neotropical Caddisflies, XIII: The Genus Ochro- trichia from Mexico and Central America (Trichoptera: Hydroptilidae). Smithson- ian Contributions to Zoology, number 118, 28 pages, 78 figures, 1972.—The taxonomic history of the genus Ochrotrichia is reviewed, the genus characterized in the adult and larval stages, and its affinities discussed. The genus is composed of two subgenera, the nominate and Metrichia Ross, which are keyed and characterized, and their habitats discussed. The species of each subgenus occurring in Mexico and Central America are placed to species-group, keyed, described and figured, and their distributions plotted. The subgenus Ochrotrichia contains 20 species, including 13 described as new, and the subgenus Metrichia contains 9 species, of which 8 are described as new including one from southern Arizona.

Official publication date is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year.

UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1972

For sale by the Superintendent of Documents. U.S. Government Printing Office Washington, D.C. 20402 - Price 40 cents (paper cover) Oliver S. Flint, Jr. Studies of Neotropical Caddisflies, XIII: The Genus Ochrotrichia from Mexico and Central America (Trichoptera: Hydroptilidae)

Introduction species (1964, 1968a, 1968b, 1968c). Starting in 1938 with the careful study of the North American The genus Ochrotrichia is exclusively New World in fauna, many species have been described from the distribution. Species are known from the United United States. States, throughout North and Central America, the Recent collections made in Mexico and Central West Indies, and in South America from Peru to America have revealed that the diversity of the fauna central Chile. Undoubtedly species will be found in of these regions is, not surprisingly, at least as great other parts of South America, although Mosely did as that of the United States. Many of the collections not discover any species in southeastern Brazil (1939), were made by the author during 1965, 1966, and nor have I found any undescribed species in small 1967 on trips supported by grant GB—2616 from the collections received from other parts of South National Science Foundation. Additional material America. collected by coworkers at the National Museum of The first species, tarsalis, was described in the genus Natural History and others have supplied many valu- over one hundred years ago by Hagen able specimens not duplicated by my collections. Yet, (1861), but was not restudied nor correctly illus- most of the species herein described are known from trated until Ross (1938a). Morton described and only one or two collections and very few individuals, illustrated the second species in 1905 as which suggests that many more species are still to be confusa. This species became the type by monotypy discovered. However, it seems that at this time a re- of Sibley's genus Polytrichia in 1926, which name is view of the known regional species, with descriptions, preoccupied by a genus of snails. Ochrotrichia with its and drawings of the new species, keys, and distribu- type insularis was proposed by Mosely in 1934 for a tions will provide a useful foundation for future Jamaican species. Mosely described three additional work on the genus. The present paper is designed to species from Mexico in 1937: aldama, arranca, and cover only those species found in Central America tenanga. The author described a single Mexican and Mexico. species, cruces (1967), and a series of West Indian I express my appreciation to Mr. Peter H. Ward, of the British Museum (Natural History) for arranging Oliver S. Flint, Jr., Department of Entomology, National Museum of Natural History, Smithsonian Institution, Wash- the loan of the types of Ochrotrichia arranca (Mose- ington, D.C. 20560. ly), and O. aldama (Mosely).

1 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Genus Ochrotrichia Mosely different, the tenth tergum is a simple, generally very small, membranous lobe, there is a heavily sclerotized Polytrichia Sibley, 1926:102.—Betten 1934:153.—Mosely dorsolateral process, and the aedeagus is very large, 1937:184.—Ross 1944:125 [Preoccupied]. complex, and generally bears two (rarely one or Ochrotrichia Mosely 1934:162.—Ross 1944:125.—Denning 1956:255.—Flint 1964:58; 1968a:48; 1968c:59. none) heavily sclerotized hooks. In Rhyacopsyche Metrichia Ross, 1938a:9; 1944:121.—Flint 1968a:48. the tenth tergum is reduced and mostly covered by large, dorsolateral lobes of the ninth segment, the TYPE SPECIES.—Ochrotrichia insularis Mosely, aedeagus bears a process usually convoluted and a 1934, by original designation. central tube usually with a slender spine. The genus ADULT.—Ocelli 3, antenna simple; basal segment Microptila known from Europe, Africa, and Asia, is enlarged and elongate, second segment shorter, third most similar to Metrichia, but in general does not segment equidimensional, segments beyond usually have the dorsolateral hooks, and the aedeagus bears slightly elongate. Maxillary palpus with two basal a convoluted process but no hooks. In the species segments very short, third, fourth, and fifth each Microptila indra Schmid there are structures appar- several times longer than broad. Labial palpus with ently similar to the dorsolateral hooks, and the con- basal segment very short, second and third segments voluted process is short and broad, almost hooklike. each several times longer than broad. Head without On the basis of genital pattern then, one is tempted modifications dorsally; posterior warts may be open to recognize four genera, with Metrichia and Microp- beneath, but without special scent structures. Meso- tila almost merging. scutellum with a transverse fracture; metascutellum If one looks at the larvae for generic characters a roughly triangular in outline. Spurs 0,3,4 or 1,3,4. different situation is apparent. As indicated earlier Forewing rather broad, not markedly acuminate, (Flint 1968a, 1971) the larvae and cases of Metrichia venation not markedly reduced. and Ochrotrichia appear to be inseparable, but the LARVA.—Head simple. Labrum symmetrical, with- larvae and cases of Rhyacopsyche are distinctive. Un- out processes. Mandibles stout, broadly trianguloid; fortunately the immature stages of Microptila are left mandible with mesal brush. Metanotum with still undescribed. anterolateral angle enlarged. All pairs of legs com- Considering, then, the adult and larval morphology, paratively short and stout, prothoracic leg shortest; I recognize the genus Rhyacopsyche as distinct, tibiae enlarged apically, that of foreleg especially so Ochrotrichia and Metrichia as subgenera, indistin- and bearing specialized setae and plates. Abdomen guishable in the larval stage, but quite distinct in the rarely bearing small sclerites on some terga; middle adult. Microptila I hold separate, but recognize the segments enlarged and slightly compressed. Case possibility that it may ultimately be considered a usually of the compressed, purse type, rarely in the third subgenus. form of a turtle's shell. As indicated above, the genus Ochrotrichia is to be On the basis of adult and larval morphology the divided into subgenera. The typical subgenus lacks an genus seems to be quite clearly a member of the apical spur on the foreleg, and in the male is lacking (sensu Nielsen, 1948). The closest re- modifications of the abdomen, and possesses geni- lationship based on the adults would seem to be with talia with a large, often extremely modified tenth the genus Rhyacopsyche in the New World and Mi- tergum, no dorsolateral hooks, and a rather simple croptila in the Old. The three are to be recognized aedeagus. The subgenus Metrichia possesses an apical by the structure of the male genitalia. The typical spur on the foreleg, often possesses internal sacs, subgenus of Ochrotrichia may be recognized by the setal brushes, or other modifications of the male ab- large, often extremely complex, exserted tenth tergum, domen, and the male genitalia have the tenth tergum and the aedeagus which is usually a simple tube, rare- reduced to a simple membranous lobe, a button-like ly with two apical rods or a convoluted process. In cercus and dorsolateral hooks, and a very large, com- the subgenus Metrichia, whose genitalia are quite plex aedeagus usually with two large hooks.

Key to Subgenera of Ochrotrichia 1. Foreleg without an apical spur Ochrotrichia Foreleg with an apical spur Metrichia NUMBER 1 1 8

Subgenus Ochrotrichia Mosely outline and bear from the ventral margin several very large black spines and the apex may bear a The subgenus Ochrotrichia is found over all of tem- row of specialized hairs. This group contains O. perate North America, Central America, and the arranca (Mosely), O. moselyi, new species, O. pec- West Indies. It contains the majority of the described tinifera, new species, and O. tagala, new species. species, and is especially well represented in the The tenanga group may be recognized by the United States. numerous long processes of the tenth tergum, the The subgenus may be divided into two major elongate, parallel-sided claspers bearing a band of groups, one, the xena group, seems to be the simplest. black peglike setae around the apex, along the ventral It is characterized by a simple ninth segment in which margin and onto the midbasal ridge. I place O. ten- the dorsal and lateral margins are generally continu- anga (Mosely), O. felipe Ross, O. palitla, new species, ous and the anterior margin is not produced, and the O. escoba, new species, and O. filiforma, new species, tenth tergum is a comparatively simple flap often in this group. bearing a few small spines. The aedeagus varies from The cruces group is closely related to the tenanga a comparatively simple tube to one bearing various group, but may be recognized easily by the short and processes. To this group belongs O. xena (Ross), O. broadly triangular claspers. The tenth tergum bears a unio (Ross), O. flagellata, new species, O. pectinata, black-tipped middorsal process and an apical process new species, and the West Indian species O. brayi overlaying a thin platelike lobe, in addition to various Flint, O. caligula Flint, O. gurneyi Flint, O. lobifera other spines. In addition to O. cruces Flint, the group Flint, O. marica Flint, O. spinosissima Flint, and O. contains several undescribed species in Arizona. verda Flint. The last group may be called the lometa group, The other major group is composed of the remain- and contains many species especially in the more arid ing species. It is characterized by the ninth tergum regions. The tenth tergum bears many processes, but which is depressed below the dorsal margin of the the apical one is associated, often intimately, with a pleura and whose anterior margin is produced beyond flat platelike lobe. The claspers are elongate, parallel- the anterior margin of the pleura. The tenth tergum sided basally, but narrowing to a pointed apex which is more or less intimately fused with the ninth tergum bears one (rarely none or a few) black peglike setae, and has become greatly modified, bearing many and the ventral margin is usually produced at the end spines, processes, plates, etc. The aedeagus is a very of the midbasal ridge which bears a small number of simple, threadlike structure. black peglike setae. This group contains O. lometa Considering only those species treated in this paper, (Ross), O. panamensis, new species, O. attenuata, this second major group may be divided into 6 new species, provisionally O. intermedia, new species groups. The species O. aldama (Mosely) is placed (which falls somewhat between this group and the in its own group. It is characterized by having elon- tenanga group), and a large number of species from gate, parallel-sided claspers with the black peglike the southwestern United States. setae mostly at the apex, and a rather simple, divided The larvae of this subgenus inhabit the typical, tenth tergum. compressed, purselike case of silk and sand, or rarely The second group, which I call the tarsalis group, one flattened and shaped like a turtle's shell (Ross is characterized by having a broad plate covering 1944:126). They are found in running water, usually small to moderate sized streams, often ones that dry much of the dorsal part of the tenth tergum, and in up during the dry months. I have taken larvae of this having elongate, roughly parallel-sided claspers with subgenus in riffles of streams whose water is milky many black peglike setae apically and ventrally. In from silt and dissolved matter. The adults seem to this group I place O. tarsalis (Hagen), O. stylata be readily attracted to lights. (Ross), O. caimita, new species, and O. pacifica, In the following discussions of the genitalia of both new species. subgenera, when referring to the right or left sides, The third group, the arranca group, has a mid- I am referring to the 's right or left side. Thus dorsal process of the tenth tergum bearing a special the left side of the dorsal view is referred to as the enlarged black seta and a midapical process which is right side in the text, and vice versa. The dorsal bifurcate. The claspers are more or less sigmoid in aspects of the genitalia only shows the left clasper 4 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY when the claspers are symmetrical, or nearly so. Both lateral aspects of the genitalia show the inner side claspers are shown when there is a more marked of the left clasper and the right side of the ninth and asymmetry between the right and left claspers. The tenth segments.

Key to Species of Subgenus Ochrotrichia

1. Ninth tergum not depressed, anterior margin continuous with lateral margins 2 Ninth tergum depressed, anterior margin produced anteriad 4 2. Tenth tergum consisting of two long processes O. (O.) aldatna (Mosely) Tenth tergum consisting of a single broad flap, often bearing asymmetrical modifications 3 3. Clasper with erect basal and elongate posteroventral arms O. (O.) pectinata, new species Clasper short, slightly produced apicodorsally O. (O.) flagellata, new species 4. Clasper elongate or broadly triangular, apex broadly rounded, mesal face with a band of black peglike setae apically, often along ventral margin, and onto midbasal ridge 5 Clasper of various shapes, often sigmoid or with apex pointed, never more than a single apical black peglike seta, with a discrete small group of such setae near apex of midbasal ridge, or rarely lacking all such setae 15 5. Clasper rather short and broadly triangular (with a high dorsobasal shoulder) O. (O.) cruces Flint Clasper elongate, dorsal and ventral margins roughly parallel 6 6. Tenth tergum with a broad, dorsal lobe which bears several spines and processes at various points 7 Tenth tergum without a broad dorsal lobe, but consisting of various numbers of spines and long processes often borne from a broader central region 10 7. Tenth tergum with a long process on left side O. (O.) pacifica, new species Tenth tergum with long processes either mesally or on right side 8 8. Tenth tergum with longest process dorsomesally O. (O.) caimita, new species Tenth tergum with longest processes beneath right side 9 9. Tenth tergum with a single straight basodorsal spine O. (O.) stylata (Ross) Tenth tergum with a short, straight basodorsal spine, and beyond a spine hooked sharply to right O. (O.) tarsalis (Hagen) 10. Tenth tergum with a pair of spines recurved around apex; clasper with only a few black peglike setae on midbasal ridge which are well separated from a small, apical group of such setae O. (O.) intermedia, new species Tenth tergum without an apical pair of recurved spines; clasper with a row of short black peglike setae more or less continuously around apex, along ventral margin and onto midbasal ridge 11 11. Tenth tergum with 3 long processes on right side 12 Tenth tergum with only 2 such processes 14 12. Tenth tergum lacking a short, basodorsal spur on left of midline O. (O.) tenanga (Mosely) Tenth tergum with a short, basodorsal spur on left 13 13. Tenth tergum with a single, short, basodorsal spur on right of midline O. (O.) felipe Ross Tenth tergum with 2 such spurs O. (O.) palitla, new species 14. Tenth tergum with one long spine on left side O. (O.) escoba, new species Tenth tergum without a long spine on left side O. (O.) filiforma, new species 15. Clasper elongate, gradually narrowing to an apical point bearing a single black peglike seta or a blackened point 16 Clasper sigmoid in outline, apex broader, without a single black peglike setae 17 16. Clasper ending in a blackened attenuate point O. (O.) attenuata, new species Clasper ending in a rather pointed apex bearing a single black peglike seta O. (O.) panamensis, new species 17. Apex of clasper without any processes 18 Apex of clasper bearing a ventromesal fingerlike process O. (O.) tagala, new species 18. Tenth tergum without any long processes on right side 19 Tenth tergum with two long processes on right side O. (O.) pectinifera, new species 19. Clasper with a long, pointed ventral process O. (O.) arranca (Mosely) Clasper with a short black ventral spine Q. (O.) moselyi, new species NUMBER 1 1 8

Ochrotrichia (O.) flagellata, new species Ochrotrichia (O.) aldama (Mosely), new combina- tion FIGURES 7-9, 69 FIGURES 12-13, 69 This species is probably most closely related to the Jamaican O. caligula Flint. From O. caligula, O. Polytrichia aldama Mosely, 1937:185.—Fischer 1961:174. flagellata differs in lacking the apical excision of the tenth tergum, and in having the spiral process of the The species is not clearly related to any other known aedeagus borne at its apex. species. There may be a distant relationship to O. insularis (Mosely) from Jamaica, as both have a ADULT.—Length of forewing, 2 mm. Color fuscous; two-parted tenth tergum and elongate claspers. How- antennae and legs paler. Male genitalia: Ninth seg- ment tubular, tergum neither depressed nor pro- ever in O. insularis the right process of the tenth duced anteriad. Tenth tergum a simple elongate lobe, tergum is very narrow and the left process broad, and in lateral aspect with tip angled dorsad. Clasper there are several small basal spines. small, slightly angulate in lateral aspect, apex with The following description and figures of O. aldama a row of peglike setae along margin. Aedeagus with were prepared from slide mounts of the type (dorsal a slender apical tube arising from an enlarged basal view) and a paratype (lateral view), and may, there- tube, apex with a slender spiral process. fore, suffer from a slight amount of distortion. MATERIAL.—Holotype, male. PANAMA: CANAL ADULT.—Length of forewing, 2 mm. Color un- ZONE: Barro Colorado Island, July 1967, malaise known. Male genitalia: Ninth tergum depressed and trap, W. W. Wirth. USNM Type 72033. Paratype: greatly produced anteriad. Tenth tergum divided Same, but pipeline road, near Gamboa, July 1967, longitudinally into right and left processes of approxi- malaise trap, W. W. Wirth, 1 o*. mately equal size, right process with a basomesal flap which partially overlies left process, tip directed dor- somesally, left process with tip directed ventrad. Ochrotrichia (O.) pectinata, new species Clasper elongate, broad, with a small apicoventral lobe; with an apical band of black peglike setae. FIGURES 10-11,69 Aedeagus long and threadlike. This very small species seems to be related to O. MATERIAL.—MEXICO: CHIAPAS: Esmeralda, 19 lobifera Flint (Jamaica) and O. marica Flint (Puerto November 1931, A. Dampf, holotype cT, Id1 para- Rico). From these it differs in possessing lateral type. spines on the tenth tergum and long, narrow, dorsal and apical lobes on the claspers. Ochrotrichia (O.) stylata (Ross) ADULT.—Length of forewing, 2 mm. Color fus- cous; forewing with white spots at apex and base, a FIGURES 14, 70 transverse band at midlength, and spots on anterior and posterior margins midway between band and Polytrichia stylata Ross, 1938b: 120.—Fischer 1961: 176. Ochrotrichia stylata (Ross).—Ross 1944:131.—Denning apex. Male genitalia: Ninth segment tubular, tergum 1947a: 171; 1947b: 146.—Fischer 1971:298. neither depressed nor produced anteriad. Tenth ter- gum with a basal sclerite-spine on right side; apical O. stylata is widely distributed in the western United section a rather simple hood with a cuplike invagina- States: Arizona, California, Colorado, Montana, tion in right basal region produced into a ventrolat- Oklahoma, Oregon, South Dakota, Utah and Wyo- eral point. Clasper with a high, narrow basodorsal ming. It also has a fairly wide distribution in Central lobe; with a row of black peglike setae continuously America. along dorsal margin. Aedeagus well-developed, simple, This species is closely related to O. tarsalis (Hagen) with a short apical tubule. from which it is easily distinguished by the structure MATERIAL.—Holotype, male. MEXICO: VERA- of the tenth tergum, especially by the presence of CRUZ: Rio Jamapa, north of Coscomatepec, 23 July only a single basodorsal spine in O. stylata. 1966, Flint & Ortiz. USNM Type 72034. Paratypes: ADULT.—Length of forewing, 2.5 mm. Color in Same data, 3 cf. alcohol, pale brown. Male genitalia: Ninth tergum SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY deeply depressed and produced anteriad. Tenth ter- point ventrally; dorsal margin bearing a small mesal gum with a single elongate, basodorsal spine to left point, that of right clasper near midbasal ridge, that of midline, and another short basoventral spine on of left clasper apicad of ridge. Aedeagus slender, left; a large, flat plate covering dorsum, beneath threadlike. which lies a single spine barely protruding beyond MATERIAL.—MEXICO: SAN LUIS POTOSI: El plate, a longer spine beneath right side projecting Salto, 3 June 1967, O. S. Flint, Jr., 1 o*. considerably beyond plate and laying alongside a more membranous, slightly twisted process. Clasper long, Ochrotrichia (O.) caimita, new species narrow, apex rounded, with a row of black peglike setae around apex, along ventral margin and midbasal FIGURES 16-17, 69 ridge. Aedeagus long and threadlike. This species seems to be related to O. stylata and O. MATERIAL.—GUATEMALA: ESCUINTLA: Escuin- tarsalis, and to a lesser degree to the following species. tla, Grutas de San Pedro Martir, 10 August 1965. From all, it may be easily recognized by the long and P. J. Spangler, Id- MEXICO: SAN LUIS POTOSI: somewhat convoluted middorsal process and the pair El Salto, 3 June 1967, O. S. Flint, Jr., 1 o* ; VERA- of lateral spurs on the right of the tenth tergum. CRUZ: Fortin de las Flores, 17 May 1964, Blanton ADULT.—Length of forewing, 2 mm. Completely et al., 17cf; same, but 22 May 1965, Rabago, Id- cleared and in alcohol. Male genitalia: Ninth tergum depressed and moderately produced anteriad. Tenth Ochrotrichia (O.) tar salts (Hagen) tergum with a long middorsal process with a sinuate,

FIGURES 15, 71 darkened tip, partially enclosed in a lightly sclero- tized, apical sac; basal region on right side with a Hydroptila tarsalis Hagen, 1861:275. pair of widely separated spurs, dorsalmost longest; Polytrichia tarsalis (Hagen).—Ross 1938a: 10.—Fischer 1961:176. apical sac with a more heavily sclerotized, saddle- Ochrotrichia tarsalis (Hagen).—Ross 1944:130—Edwards shaped, ventral support. Claspers elongate, apex and Arnold 1961:412.—Blickle 1962:154.—Fischer 1971: rounded, slightly asymmetrical in region of midbasal 298. ridge, with a row of black peglike setae around apex, This species is very widely distributed in North Amer- along ventral margin and midbasal ridge. Aedeagus ica, being known from Florida, Illinois, Indiana, Mis- slender, threadlike. souri, New York, Oklahoma, Ontario, Texas, Vir- MATERIAL.—Holotype, male. PANAMA: CHI- ginia, and Wisconsin. This is the first record from RIQUI: Rio Caimito, 10 miles (16 km) northwest of Latin America. David, 4 July 1967, Paul J. Spangler. USNM Type The species is probably most closely related to O. 72035. Paratype: Same, but David, Doleguita, 3 June stylata (Ross), from which it is easily distinguished 1964, A. Broce, lrf. by the hooked basal and the spiral apical processes of tenth tergum. Ochrotrichia (O.) pacifica, new species ADULT.—Length of forewing, 2 mm. Color in alco- hol, pale brown. Male genitalia: Ninth tergum deep- FIGURES 18-19, 72 ly depressed and produced anteriad. Tenth tergum This species does not seem to be closely related to with a short, heavy spine basally on left and a hooked any other known species, although there may be a spine just beyond; ventrally on left a short, laterally distant relationship to the preceding species. It may be directed spine; beyond basal section a broad, flat, immediately recognized by the long process on the dorsal plate, which bears on right ventral surface a left side and heavy apical hook of the right side of slender process with a twisted apical section ending the tenth tergum. in a dark point, apical twisted section covered by a ADULT.—Length of forewing, 2.5 mm. Color flat lobate sclerite. Clasper long, slender, apex brown; antenna and head hairs cream-colored; fore- rounded; with a row of black peglike setae around wing fuscous anteriorly, progressively paler postero- apex and along ventral margin; midbasal ridge nearly apically, posteroapical fringe cream-colored with in- vertical, that of right clasper bearing a blackened distinctly paler spots. Male genitalia: Ninth tergum NUMBER 1 1 8 strongly depressed and produced anteriad. Tenth Ochrotrichia (O.) moselyi, new species tergum with a long pointed process on left side with several small dorsal points and with tip curved ven- FIGURES 24-27, 72 trad; right side with a broader lobe ending in an As mentioned above, this and the preceding species apicolateral spine; right apical sclerite a heavy hook are very closely related. O. moselyi may be recognized angled mesad. Clasper elongate, apex rounded; black by the lack of the elongate, pointed lobe ventrally on peglike setae clustered around apex and a few along the claspers, and in possessing only a single dark dor- midbasal ridge. Aedeagus long and threadlike. sal seta on the tenth tergum. However, the remaining MATERIAL.—Holotype, male. PANAMA: CHI- structures of the tenth tergum and claspers appear to RIQUI: Rio Caimito, 10 miles (16 km) northwest of be identical in the two species. David, 4 July 1967, Paul J. Spangler. USNM Type ADULT.—Length of forewing, 2 mm. Color fus- 72036. Paratypes: MEXICO: CHIAPAS: Puento cous, antennae and head with white hairs; forewing Arroyo Viejo, route 200 km 141 (near Mapastepec), with a transverse white band at midlength, white 9 June 1967, Flint & Ortiz, Id". COSTA RICA: spots on anterior and posterior margins at ^4 length, GUANACASTE: Rio Corobici, Las Canas, 26 July 1967, and at tip. Male genitalia: Ninth tergum depressed, O. S. Flint, Jr., 1 d. slightly expanded anteriad. Tenth tergum with a long, curved, dorsal process bearing basally a large black seta; left side with an apically forked process; ven- Ochrotrichia (O.) arranca (Mosely), new combina- trally with a scooplike lobe. Clasper with an elongate, tion fingerlike, dorsal lobe, midventrally with 3 heavily FIGURES 20-23, 72 sclerotized spines differently placed on right and left claspers, basal portion considerably widened. Aedea- Polytrichia arranca, Mosely, 1937:185.—Fischer 1961:175. gus long, threadlike. This species and the following, O. moselyi, new MATERIAL.—Holotype, male. MEXICO: VERA- species, are very closely related. O. arranca may be CRUZ: Rio Tacolapan, route 180, km 551, 25-28 July recognized by the very long ventral process of the 1966, Flint & Ortiz. USNM Type 72037. Paratypes: clasper and the presence of two black dorsal setae Same data, lcf. GUATEMALA: SUCHITEPEQUEZ: on the tenth tergum. Finca Moca, 12 June 1966, Flint & Ortiz, ltf. The holotype is mounted on a slide in balsam and thus can not be viewed laterally, and for this reason Ochrotrichia (O.) pectinifera, new species Mosely's original lateral aspect figures are repeated here. However new dorsal and ventral views were FIGURES 28-30, 72 prepared from the type and illustrate the peculiari- ties of the species. This species is clearly related to the preceding species, ADULT.—Length of forewing, 3 mm. Color, un- from which it is easily distinguished by the structure known. Male genitalia: Ninth tergum depressed, of the tenth tergum. The two long, free processes on barely expanded anteriad. Tenth tergum with a long, the right side and the dorsoventrally divided mid- curved, dorsal process bearing dorsally two large dorsal process of the tenth tergum are diagnostic. black setae; left side with an apically forked process; ADULT.—Length of forewing, 2.5 mm. Color in ventrally with a scooplike lobe, appearing to end in alcohol, pale brown. Male genitalia: Ninth tergum a spine on right (rather than a rounded lobe, but depressed and produced anteriad. Tenth tergum with unclear). Clasper with an elongate fingerlike dorsal basal middorsal process widened apicad, and bearing lobe, with an elongate, pointed and apically-darkened, subapically an enlarged, black seta; beneath this ventral lobe, between lobes with 3 short black spines arises a slender, slightly sinuate, pointed process, at- differently placed on right and left claspers. Aedeagus taining apex; apex with a decurved hook, and on threadlike. right side with an even more decurved and slender MATERIAL.—MEXICO: CHIAPAS: Barranca Hon- hook; right side with a long, slender process almost da, 24 February 1931, A Dampf, holotype

Road, near Gamboa, July 1967, W. W. Wirth, 1 tf. gum with a long, dark-tipped, middorsal process (Described from Mexico, Chiapas, Saltenango de la giving rise to a very slender basolateral spur on the Paz.) left side, and with two short basal spurs on the right side; hook on left of midline extending only slightly Ochrotrichia (O.) felipe Ross beyond middorsal process, sharply decurved in lateral aspect; right side with three long processes, one aris- FIGURES 36, 74 ing basally and extending ventrally, second arising Ochrotrichia felipe Ross, 1944:275.—Fischer 1971:297. from an enlarged base at midlength and ending in a small darkened hook, third semimembranous, arising This species is very close to O. palitla, new species. It subapically and shortest. Clasper elongate, narrow, may be distinguished by the lack of the lateralmost with rounded apex; apex, ventral margin, and mid- spur on the right side at the base of the tenth ter- basal ridge with many black peglike setae. Aedeagus gum. In addition there are many other small differ- long and threadlike. ences in the proportions of the processes of the tenth MATERIAL.—Holotype, male. MEXICO: SAN LUIS tergum; for instance, the basal spur of the middorsal POTOSI: Palitla, 5 June 1966, O. S. Flint, Jr. USNM process is stouter and more dorsad in position and Type 72040. Paratypes: Same data, 6cf • the hook to the left of the midline is longer and more gently decurved in O. felipe. Ochrotrichia (O.) filiforma, new species ADULT.—Length of forewing, 2 mm. Color in alco- hol, pale brown. Male genitalia: Ninth tergum deeply FIGURES 39-40, 75 depressed and produced anteriad. Tenth tergum with O. filiforma, new species, is probably most closely re- a long, dark-tipped middorsal process giving rise to lated to the following species, but may be easily a slender basodorsal spur on left side, and a single recognized by the extremely elongate genital parts, basal spur on right side; hook to left of midline ex- especially the processes of the tenth tergum. tending beyond middorsal process and gradually de- ADULT.—Length of forewing, 2.5 mm. Color in curved in lateral aspect; right side with three long alcohol, pale brown. Male genitalia: Ninth tergum processes, one arising basally and extending ventrally, strongly depressed and produced anteriad. Tenth second arising at midlength ending in a darkened tergum with a slender middorsal spur; a black-tipped point, third process semimembranous, arising subapi- middorsal spine, slightly longer than spur; apically cally and shortest. Clasper elongate, narrow, apex with left lobe scoop-shaped, produced ventrad, right rounded; apex, ventral margin, and midbasal ridge lobe elongate, overlaying right process; with a very with many short black peglike setae. Aedeagus long long, slightly sinuate process on right (probably dis- and threadlike. placed from normal position in type), second long MATERIAL.—MEXICO: SAN LUIS POTOSI: El process on right twisted underneath right lobe and Salto, 3 June 1967, O. S. Flint, Jr., ltf. (Described arising from an ovate structure. Clasper very long, from U.S.A., Texas, San Felipe Spring, Del Rio.) slender, apex rounded; apex and ventral margin with black peglike setae; midbasal ridge obsolete. Ochrotrichia (O.) palitla, new species Aedeagus long and threadlike. FIGURES 37-38, 74 MATERIAL.—Holotype, male. COSTA RICA: CARTAGO: Chitaria, 19 June 1967, Flint & Ortiz. This species is closest to the preceding species, O. USNM Type 72041. felipe Ross, with which it agrees in possessing a short basal spur, on the left side of the tenth tergum. How- ever, it differs in possessing two short spurs on the Ochrotrichia (O.) escoba, new species right side, rather than the one as in O. felipe. FIGURES 41-42, 74 ADULT.—Length of forewing, 2.5 mm. Color in alcohol, pale brown. Male genitalia: Ninth tergum The relationship of this species is clearly with the deeply depressed and produced anteriad. Tenth ter- tenanga group, but it is not a member of the complex 10 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY composed of the first three species of the group. It band of black peglike setae apically, and on midbasal may be recognized by possessing two long processes ridge. Aedeagus slender, threadlike. on the right side of the tenth tergum, and a short MATERIAL.—MEXICO: MEXICO: Las Cruces Na- process basodorsally on the mesal face of the clasper. tional Park, La Marquesa, 3000 m elevation, 5-9 ADULT.—Length of forewing, 2 mm. Color pale July 1965, Flint & Ortiz, holotype cf • brown; forewing darker along frontal margin. Male genitalia: Ninth tergum deeply depressed and pro- Ochrotrichia (O.) intermedia, new species duced anteriad. Tenth tergum with a long middorsal FIGURES 45-46, 75 process widened at midlength; dark-tipped middorsal spur short, tip angled to left; a long, dark-tipped, In certain respects this species is intermediate be- dorsal spine on right side, slightly surpassing long tween the tenanga group of species and those that lateral spine which bears a small basolateral spur; follow, although probably closest to the following left side terminating in a slender hook of same length ones. With the tenanga group, O. intermedia shares as right lateral spine; a complex central lobe. Clasper the rounded apex of the clasper which bears a num- long, slender, apex rounded; with a short basodorsal ber of black peglike setae. However, the tenth tergum process on mesal face, ending in a cluster of dark is much more similar in structure to the lometa spines; black peglike setae on both dorsal, ventral, group, as is the shape of the ventral margin of the and apical margins. Aedeagus short, tubular. claspers and its midbasal ridge. MATERIAL.—Holotype, male. GUATEMALA: IZA- ADULT.—Length of forewing 3 mm. Color in al- BAL: Las Escobas, near Matias de Galvez, 14—16 cohol, pale brown. Male genitalia: Ninth tergum August 1965, Flint & Ortiz. USNM Type 72042. deeply depressed and produced anteriad. Tenth ter- Paratypes: Same, but 14—15 August 1965, P. J. gum with two middorsal spines, one basal, other Spangler, 1 d ; Same, but 26-27 June 1966, Flint & arising near midlength and extending nearly to apex; Ortiz, 2d- right side with a basal spur; apex with two decurved hooks, one on right side very long and recurved under venter. Clasper elongate, tapering to a rounded Ochrotrichia (O.) cruces, Flint apex; apex with a cluster of black peglike setae, two FIGURES 43-44, 75 more such setae near apex of midbasal ridge, third seta near base of ridge, that of left clasper much more Ochrotrichia cruces Flint, 1967:12. basad than that of right clasper. Aedeagus long and The collecting of additional species of Ochrotrichia threadlike. in Arizona has resulted in the discovery of species MATERIAL.—Holotype, male. GUATEMALA: quite closely related to O. cruces. From these un- CHIMALTENANGO : Tecpan Guatemala, 8 August described species, O. cruces differs mainly in the pro- 1967, O. S. Flint, Jr. USNM Type 72043. portionate lengths of the various processes of the tenth tergum. Ochrotrichia (O.) panamensis, new species ADULT.—Length of forewing, 3.5 mm. Color fus- cous; forewings mostly denuded, but appearing to FIGURES 47-48, 75 have some white markings. Male genitalia: Ninth This is a rather distinctive new species of the lometa tergum depressed and produced anteriad. Tenth group. The short middorsal process with its upright tergum with a short apical process whose tip is hooked black apical seta and the very broad and angled spur ventrad, and with a lightly sclerotized plate ventrad; on the right side of the tenth tergum are unique. a short black-tipped, upcurved spine middorsally, and ADULT.—Length of forewing, 3.5 mm. Color in al- a very short spur on right side at same level; with a cohol, dark brown; forewing with a transverse pale broad thin plate basolaterally on right side; basal band at midlength. Male genitalia: Ninth tergum section with a long, pointed, process curving to right deeply depressed and produced anteriad. Tenth side apically, and surpassing black-tipped spine. tergum with a short basal, middorsal process which Clasper broadly triangular, apex rounded; with a bears apically an enlarged, upright black seta; an NUMBER 1 1 8 11 elongate basal spur on right dorsally; apical process throughout Central America and the West Indies, with tip pointed and angled to right, with a lightly and again from Peru, northwest Argentina, and cen- sclerotized circular flap on right; right side with a tral Chile. The greatest diversity so far found has lateral spur arising from a broad base and angled been in Central America and the West Indies. beneath tergum. Clasper elongate, tapering to a I recognize five groups for the species treated in pointed apex with a black peglike seta; midventral this paper. The nigritta group is characterized by lobe small; midbasal ridge apically with a small the presence of internal sacs arising between the fifth cluster of black peglike setae. Aedeagus long and and sixth segments. The aedeagus bears two large threadlike. hooks at nearly the midlength of the apical section. MATERIAL.—Holotype, male. PANAMA: CHIRI- In addition to O. (M.) nigritta (Banks), the group QUI: Rovira, David, 2200 feet (660 m), 13 July 1964, contains O. (M.) arizonensis, new species, and O. A. Broce. USNM Type 72044. Paratypes: Same data, (M.) biungulata, new species. 23 <5 ; Rio Chiriqui Viejo, El Volcan, 5280 feet The second group is much like the former in the (1584 m), 22 July 1964, A. Broce, 38c?. structure of the aedeagus, but the smaller internal pouches apparently arise between the fourth and Ochrotrichia (O.) attenuata, new species fifth segments, there are dorsolateral hair brushes on the fifth and sixth segments, and the seventh tergum FIGURES 49-50, 73 is modified. This group, the penicillata group, con- Although a member of the lometa group, O. attenu- tains O. {M.) penicillata, new species, and O. (M.) ata, new species, is easily recognized by the slender, trigonella, new species. pointed apex of the claspers. The structure of the The campana group contains in addition to O. tenth tergum, although quite similar to that of O. (M.) continentalis, new species, and O. (M.) quad- dactylophora Flint, is distinctive also in the shapes, rat a, new species, the species O. (M.) campana lengths, and numbers of spines. Flint and O. (M.) similis Flint from Dominica. The ADULT.—Length of forewing, 2.8 mm. Color fus- pouches are borne between the sixth and seventh cous; head with some whitish hairs, forewing with a terga in these species, the two aedeagal hooks are transverse white band at midlength, several small subapical, and usually the tenth tergum is elongate. white spots apicad, and with apex white. Male geni- The exclamationis group bears pouches between talia: Ninth tergum depressed and greatly expanded the fourth and fifth terga, and also dorsolateral anteriad. Tenth tergum with two black-tipped spines hair brushes on some segments. The aedeagus bears basally, longest one with tip sharply upturned; right but a single elongate spine. In addition to the Do- side with two short spurs and one long one ventrally minican O. (M.) exclamationis Flint, the group con- whose tip almost reaches the apex; apical process tains O. (M.) lemniscata, new species. inflated basally, tip decurved, subapically with a The species O. (M.) aberrans, new species, is lightly sclerotized circular plate on right. Clasper placed in its own group. There are no modifications elongate, tip produced into an attenuate, darkened of the abdomen, and the aedeagus ends in a bulbous point; with an elongate cluster of black peglike setae lobe bearing two spines and a freely extending tubule. mesally at midlength. Aedeagus very long, threadlike. The larvae inhabit compressed, purselike cases of MATERIAL.—Holotype, male. GUATEMALA: silk and organic matter. The species of the subgenus HUEHUETENANGO: 20 miles (32 km) northwest of seem to be closely associated with springs, seeps, Huehuetenango, 9-10 August 1967, O. S. Flint, Jr. waterfalls, and similar habitats, rather than larger, USNM Type 72045. Paratypes: Same data, 2cf. slowly flowing streams as is typical of the nominate subgenus. The adults are rarely taken at light, and Subgenus Metrichia Ross when they are I expect it is the result of their having been disturbed. They are more frequently taken by Species of the subgenus Metrichia have been found sweeping vegetation at or near the water's edge. from the southwestern part of the United States, 12 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

Key to Species of Subgenus Metrichia

1. Aedeagus with spines borne at apex of central tube, central tubule extending freely from apex of tube O. (Af.) aberrans, new species Aedeagus with spines borne before apex of central tube, central tubule not extending beyond apex of tube 2 2. Aedeagus with a single, long, ribbonlike spine O. (Af.) lemniscata, new species Aedeagus with a pair of spines 3 3. Abdomen with a pair of pouches arising between sixth and seventh segments 4 Pouches arising either between fourth and fifth or fifth and sixth segments 5 4. Clasper small and quadrate, posterior margin with a row of short black setae O. (M.) quadrata, new species Clasper elongate, posterior margin tricuspate in lateral aspect O. (Af.) continentalis, new species 5. Abdomen bearing tufts of hairs and with seventh tergum modified 6 Abdomen without hair tufts and with seventh tergum unmodified 7 6. Spines of the aedeagus arising at the same level O. (M.) trigonella, new species Spines of the aedeagus arising from different levels of the central tube O. (Af.) penicillata, new species 7. Aedeagus with an external spur arising from neck and with hooks overlaying each other O. (Af.) biungulata, new species Aedeagus without a spur, and with spines opposing each other 8 8. Spines of aedeagus arising at the same level, without an intervening knob O. (Af.) arizonensis, new species Spines of aedeagus arising at different levels, with an intervening knob O. (.M.) nigritta (Banks)

Ochrotrichia (M.) nigritta (Banks) elongate, with an apical point. Aedeagus with two large hooked spines and between them a broad black FIGURES 6, 51-52, 76 knob, all arising near midlength of apical trough and Orthotrichia nigritta Banks, 1907a: 163; 1907b: 50.—Betten tubule. 1934:153.—Milne 1936:76. MATERIAL.—U.S.A.: TEXAS: spring, Landa Park, Metrichia nigritta (Banks).—Ross 1938a:9; 1944:121.— New Braunfels, 21 April 1960, O. S. Flint, Jr., many Fischer 1961:83; 1971:227.—Edwards and Arnold 1961: 411. d cf • MEXICO: SAN LUIS POTOSI: El Salto, 8 May 1964, Blanton, et al., 7cT- VERACRUZ: Fortin de las This, the type species of Metrichia, has a wide dis- Flores, 22 May 1965, Rabago, 2o*2?; same, but tribution from the southwestern United States to El June 1964, Blanton, Id1. MICHOACAN: San Lorenzo, Salvador. It is rather constant in the structure of the route 15, km 206, 14-15 July 1966, Flint & Ortiz. male genitalia, although the more southern examples 3cTl $ . EL SALVADOR: LA LIBERTAD: LOS Chor- have proportionately shorter claspers. ros, near Santa Tecla, 5 July 1966, Flint & Ortiz, It is closely related to O. (M.) arizonensis, new 2o*. species, from which it may be distinguished by the presence of a dark knob between the shorter, more hooked spines of aedeagus, the longer narrower Ochrotrichia (M.) arizonensis, new species claspers, and the elongate pouches in the abdomen. FIGURES 53-54, 76 ADULT.—Length of forewing, 2.5-3 mm. Color black. Male abdomen with a pair of reticulate This species is clearly related to O. (M.) nigritta, but pouches, about twice as long as broad between fifth may be distinguished by many details of the male and sixth segments. Male genitalia: Ninth segment genitalia. Most notable are the shorter, broader clasp- barely twice as long as high in lateral aspect, with ers, the longer hooks of the aedeagus which arise close posterior margin strongly angulate. Cercus ovate. together without an intervening knob, and the pres- Dorsolateral hook broad, angled ventrad apically, with ence of a pair of small rounded sacs in the sixth an elongate basolateral scale. Clasper in lateral aspect segment. NUMBER 1 1 8 13

ADULT.—Length of forewing, 2.5 mm. Almost structure of the genitalia, but also by the complexity completely denuded, color now grey. Male abdomen of the abdominal modifications. O. penicillata may be with a pair of rounded sacs lying within sixth seg- recognized by the hooks of the aedeagus whose bases ment, but apparently arising between fifth and sixth are well separated, the shorter, broader claspers, and segments. Male genitalia: Ninth segment about one the different ornamentation of the abdominal terga. and one-half times as long as high in lateral aspect, ADULT.—Length of forewing, 1.5 mm. Color in ventral half of posterior margin very oblique. Cercus alcohol, dark brown. Male abdomen with a pair of elongate. Dorsolateral hook only slightly decurved, large, round internal sacs filled with dark scales in basolateral scale small. Clasper in lateral aspect the fifth segment, fifth and sixth segments bearing slightly longer than high, apex produced into a sharp large, dorsolateral hair brushes, fifth tergum with a point. Aedeagus with two, large, slightly curved small dorsolateral flap bearing a small pencil of long, spines arising at the same level at about half the curved, decumbent hairs; seventh tergum small and length of the internal tubule. rectangular (possibly bearing specialized setae). Male MATERIAL.—Holotype, male. U.S.A.: ARIZONA: genitalia: Ninth segment about twice as long as Santa Cruz Co., Sycamore Canyon, Atascosa Mts., high in lateral aspect, posterior margin slightly 14 June 1968, Flint & Menke. USNM Type 72046. oblique. Cercus elongate. Dorsolateral hook sharply decurved, basolateral scale well-developed. Clasper Ochrotrichia (M.) biungulata, new species barely longer than high, apex produced into a small, blunt tooth. Aedeagus with two well-developed, FIGURES 55—56, 76 curved spines, origins well separated, apical trough This species appears to be related to the two pre- broad and well-sclerotized. ceding, but differs rather strongly in the structure MATERIAL.—Holotype, male. GUATEMALA: of the aedeagus. The paired hooks lying one over ESCUINTLA: Grutas de San Pedro Martir, 10 August the other and the stout spur arising from the base of 1965. P. J. Spangler. USNM Type 72048. the internal tubule of the aedeagus are distinctive. ADULT.—Length of forewing, 1.5 mm. Color, uni- Ochrotrichia (M.) trigonella, new species formly fuscous. Male abdomen with a pair of large, elongate, bootshaped sacs lying within fifth segment, FIGURES 59-60, 77 opening between fifth and sixth. Male genitalia: Most closely related to the preceding species, O. (M.) Ninth segment less than one and one-half times as trigonella, new species, is easily recognized by the long as high in lateral aspect, posterior margin angu- large spines of the aedeagus whose bases are approxi- late. Cercus elongate. Dorsolateral hook distinctly mate, the elongate claspers, and the modifications decurved, basolateral scale very small. Clasper slight- of the abdominal terga. ly longer than high in lateral aspect, apex evenly ADULT.—Length of forewing, 2 mm. Color in al- rounded, with several small black points on ventro- cohol, dark brown. Male abdomen with a pair of mesal margin. Aedeagus with two stout black hooks small, round pouches between fourth and fifth terga; arising contiguously, and lying one over the other, at with large brushes of hairs dorsolaterally on fifth and about a third of distance from base to apex of in- sixth segments, seventh tergum developed as a tri- ternal tubule; with a lateral spur extending from base anguloid mesal sclerite surrounded by specialized of internal tubule to origin of hooks. setae, eighth tergum heavily sclerotized and bearing MATERIAL.—Holotype, male. PANAMA: PANAMA : a tuft of long setae. Male genitalia: Ninth segment Cerro Campana, July 1967, W. W. Wirth. USNM almost twice as long as high in lateral aspect, with Type 72047. Paratype: Same data, 1 c?. posterior margin nearly vertical. Cercus elongate. Dorsolateral hook rather short and decurved apically, Ochrotrichia (M.) penicillata, new species basolateral scale short but broad. Clasper slightly elongate, apex developed into a point. Aedeagus FIGURES 57-58, 77 with a pair of large, curved spines arising at the This and the following species, O. (M.) trigonella, same level well beyond the origin of the internal new species, appear to be related, not only by the tubule. 14 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

MATERIAL.—Holotype, male. MEXICO: VERA- arising between sixth and seventh terga. Male geni- CRUZ: Fortin de las Flores, 22 May 1965, Rabago. talia: Ninth segment almost twice as long as high in USNM Type 72049. Paratypes: HONDURAS: Co- lateral aspect, posterior margin nearly vertical. Cer- MAYAGUA: Rancho Chiquito, southeast of Flores, 2-3 cus rounded. Dorsolateral hook long, slender, and August 1967, O. S. Flint, Jr., 1 d 1 ? • almost straight, basolateral scale very small. Clasper equilateral in lateral aspect, posterior margin trun- cate and bearing a band of short black setae. Ochrotrichia (M.) continentalis, new species Aedeagus with two small hooks arising at the same FIGURES 61-62, 77 level about 94 distance from base to apex of internal tubule, with a separated rod basad of hooks. This species appears to be quite closely related to the MATERIAL.—Holotype, male. MEXICO: VERA- species O. (M.) campana Flint and O. (M.) similis CRUZ: Rio Jamapa, north of Coscomatepec, 23 July Flint, both known from Dominica. All possess sacs 1966, Flint & Ortiz. USNM Type 72051. between the sixth and seventh terga, reduced aedeagal spines born subapically, claspers with excavate pos- terior margins, and elongate dorsolateral hooks and Ochrotrichia (M.) lemniscata, new species tenth tergum. From both, continentalis may be dis- FIGURES 65-66, 78 tinguished by the very dissimilar aedeagal spines, and the tricuspate posterior margin of the claspers. On the basis of the single ribbonlike spine of the ADULT.—Length of forewing, 2 mm. Color uni- aedeagus and pouches in the fourth abdominal seg- formly fuscous. Male abdomen with a pair of ment, this species would appear to be related to the pouches opening between sixth and seventh terga; Dominican O. (M.) exdamationis Flint. It is very eight tergum well-sclerotized. Male genitalia: Ninth different in the shape of the claspers, dorsolateral segment more than three times as long as high in hook, and pouches of the abdominal segments. lateral aspect, with posterior margin slightly oblique. ADULT.—Length of forewing, 1.5 mm. Color in Cercus small and upright. Tenth tergum forming an alcohol, dark brown. Male abdomen with a pair of elongate, well-sclerotized lobe. Dorsolateral hook small round pouches between fourth and fifth terga; elongate, apex slightly curved ventromesad. Clasper large brushes of hair borne laterally on fifth and longer than high, posterior margin slightly oblique, sixth segments (at least). Male genitalia: Ninth with 3 small teeth. Aedeagus with two well-developed segment over three times as long as high in lateral spines, one much longer and more slender than other, aspect, posterior margin slightly oblique. Cercus origins approximate, and arising well beyond origin ovate. Dorsolateral hook evenly bowed ventrad, with of internal tubule which is extremely long. a distinct basolateral scale. Clasper rounded, slightly MATERIAL.—Holotype, male. PANAMA: CANAL elongate, with a small apicoventral notch. Aedeagus ZONE: Barro Colorado Island, July 1967, malaise with apical trough and internal tubule very long and trap, W. W. Wirth. USNM Type 72050. slender, with a lateral spine as long as apical trough and subparallel to it. Ochrotrichia (M.) quadrata, new species MATERIAL.—Holotype, male. PANAMA: CHIRI- QUI: David, Rovira, 2200 feet (660 m), 13 July FIGURES 63-64, 78 1964, A. Broce. USNM Type 72052. Paratypes: Same Although abundantly distinct, this species is related data, 7d, 1?. to the preceding, as is shown by the sacs between the sixth and seventh terga and the small hooks on Ochrotrichia (M.) aberrans, new species the aedeagus. However, the small, quadrate claspers FIGURES 67-68, 78 with an apical band of peglike setae, and the lateral rodlike process of the aedeagus are distinctive. Although this species is a typical member of Me- ADULT.—Length of forewing, 2 mm. Color grey; trichia on the basis of the structure of the ninth forewing with diffuse bands of silvery hairs. Male segment, dorsolateral hooks, and claspers, the aedea- abdomen with a pair of large, complex pouches gus and unmodified abdomen are very different, NUMBER 1 1 8 15 making the species easily recognizable. pectinifera, new species. Mexico ADULT.—Length of forewing, 1.5 mm. Color in ponta Flint, 1968c: 61. Dominica alcohol, brown. Male abdomen without obvious spinosissima Flint, 1964:58. Puerto Rico, Dominica modifications. Male genitalia: Ninth segment almost stylata (Ross), 1938b: 120. Wyoming, western United twice as long as high in lateral aspect, posterior States, Mexico, Guatemala margin moderately angled. Cercus small and mem- tagala, new species. Guatemala, Nicaragua branous. Dorsolateral hook narrow and decurved, tarsalis (Hagen), 1861:275. Canada, eastern United basolateral scale well developed. Clasper broad, dor- States, Mexico sal margin arched, posteroventral margin straight. tenanga (Mosely), 1937:185. Mexico, Guatemala, Aedeagus with a bulbous apex bearing two unequal Honduras, Costa Rica, Panama spines, internal tubule extending freely from apex. verda Flint, 1968b: 153. Puerto Rico MATERIAL.—Holotype, male. MEXICO: VERA- CRUZ: Fortin de las Flores, June 1964, F. S. Blanton. Ochrotrichia, subgenus Metrichia USNM Type 72053. aberrans, new species. Mexico Check List of the Neotropical Species of Ochro- argentinica Schmid, 1958:195. Argentina, Chile, trichia Peru arizonensis, new species. Arizona The following check list contains the names and dis- biungulata, new species. Panama tributions of the species of the genus Ochrotrichia campana Flint, 1968c: 62. Dominica described or recorded from the Americas south of continentalis, new species. Panama the United States, including the Antilles, together exclamationis Flint, 1968c: 64. Dominica with references to their original descriptions. The juana Flint, 1964:60. Puerto Rico locality listed in italics is the type locality for the lemniscata, new species. Panama species. neotropicalis Schmid, 1958:195. Argentina, Peru nigritta (Banks), 1907a: 163. Texas, Mexico, El Sal- Ochrotrichia, subgenus Ochrotrichia vador penicillata, new species. Guatemala aldama (Mosely), 1937:185. Mexico quadrata, new species. Mexico arranca (Mosely), 1937:185. Mexico similis Flint, 1968c: 62. Dominica, Guadeloupe attenuata, new species. Guatemala trigonella, new species. Mexico, Honduras brayi Flint, 1968c: 61. Dominica yalla Flint, 1968a: 50. Jamaica caimita, new species. Panama caligula Flint, 1968a: 49. Jamaica cruces Flint, 1967:12. Mexico Literature Cited escoba, new species. Guatemala Banks, Nathan felipe Ross, 1944:275. Texas, Mexico 1907a. New Trichoptera and Psocidae. Journal of the filiforma, new species. Costa Rica New York Entomological Society, 15:162-166. flagellata, new species. Panama 1907b. Catalogue of the Neuropteroid (except gurneyi Flint, 1964:60. Puerto Rico Odonata) of the United States. Pages 1-53. Phila- delphia, Pennsylvania. insularis Mosely, 1934:163. Jamaica Betten, Cornelius B. intermedia, new species. Guatemala 1934. The Caddis Flies or Trichoptera of New York lobifera Flint, 1968a: 50. Jamaica State. New York State Museum Bulletin, 292:1- marica Flint, 1964:60. Puerto Rico 576. moselyi, new species. Mexico, Guatemala Blickle, R. L. 1962. Hydroptilidae (Trichoptera) of Florida. The Flor- pacifica, new species. Panama, Mexico, Costa Rica ida Entomologist, 45:153-155. palitla, new species. Mexico Denning, D. G. panamensis, new species. Panama 1947a. New Species and Records of North American Hy- pectinata, new species. Mexico droptilidae (Trichoptera). Psyche, 54:170-177. 16 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

1947b. New Species and Records of Nearctic Hydroptil- Milne, Lorus J. idae (Trichoptera). Bulletin of the Brooklyn En- 1936. Studies in North American Trichoptera. Part 3: tomological Society, 42:145-158. 56-128. Cambridge, Massachusetts. 1956. Trichoptera. In R. L. Usinger, Aquatic Insects of Morton, K. J. California. Pages 237-270. Berkeley, California. 1905. North American Hydroptilidae. New York State Museum Bulletin, 86:63-75. Edwards, Sidney W., and Connie R. Arnold Mosely, M. E. 1961. The Caddis Flies of the San Marcos River. The 1934. New Exotic Hydroptilidae. Transactions of the Texas Journal of Science, 13:398-415. Royal Entomological Society of London, 82:137- Fischer, F. C. J. 163. 1961. Philopotamidae, Hydroptilidae, Stenopsychidae. 1937. Mexican Hydroptilidae (Trichoptera). Transac- Trichopterorum Catalogus, 2:1-189. tions of the Royal Entomological Society of Lon- 1971. Supplement to Volumes I and II. Trichopterorum don, 86:151-190. Catalogus, 12:1-311. 1939. The Brazilian Hydroptilidae (Trichoptera). Novi- Flint, Oliver S., Jr. tates Zoologicae, 41:217-239. 1964. The Caddisflies (Trichoptera) of Puerto Rico. Nielsen, Anker Technical Paper of the Agricultural Experiment 1948. Postembryonic Development and Biology of the Station, University of Puerto Rico, 40:1-80. Hydroptilidae. Det Kongelige Danske Videnska- 1967. Studies of Neotropical Caddis Flies, IV. New Spe- bernes Selskab, Biologiske Skrifter, 5(1): 1-200. cies from Mexico and Central America. Proceed- Ross, Herbert H. ings of the United States National Museum, 123 1938a. Lectotypes of North American Caddis Flies in the (3608):1-24. Museum of Comparative Zoology. Psyche, 45:1- 1968a. The Caddisflies of Jamaica (Trichoptera). Bulletin 61. of the Institute of Jamaica, Science Series, 19: 1938b. Descriptions of Nearctic Caddis Flies (Trichop- 1-68. tera), with Special Reference to the Illinois Spe- 1968b. New Species of Trichoptera from the Antilles. cies. Bulletin Illinois Natural History Survey, 21 The Florida Entomologist, 51:151-153. (4):101-183. 1968c. Bredin-Archbold-Smithsonian Biological Survey of 1944. The Caddis Flies, or Trichoptera, of Illinois. Bul- Dominica, 9. The Trichoptera (Caddisflies) of the letin Illinios Natural History Survey, 23 (1): 1- Lesser Antilles. Proceedings of the United States 326. National Museum, 125(3665): 1-86. Schmid, F. 1971. Studies of Neotropical Caddis Flies, XI: The Ge- 1958. Contribution a l'e'tude des Trichopteres Neo- nus Rhyacopsyche in Central America (Hydroptil- tropicaux III. Mitteilungen aus dem Zoologischen idae). Proceedings of the Biological Society of Museum in Berlin, 34:183-217. Washington, 83(46) :515-526. Sibley, C. K. Hagen, H. A. 1926. Studies on Trichoptera. In A Preliminary Bio- 1861. Synopsis of the Neuroptera of North America. logical Survey of the Lloyd-Cornell Reservation. Smithsonian Miscellaneous Collections, 4(l): + Bulletin of the Lloyd Library, 27:102-108, 185- 347. 221. NUMBER 1 1 8 17

5 FIGURES 1-6.—Ochrotrichia (O.) insularis Mosely: 1, head, dorsal; 2, wings, after Mosely 1934; 3, labial palpus; 4, maxillary palpus; 5, thorax, dorsal.—O. (M.) nigritta (Banks): 6, wings, after Ross 1938a. 18 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

13

FIGURE 7-15.—Ochrotrichia (O.) flagellata, new species: 7, genitalia, dorsal; 8, genitalia, lat- eral; 9, aedeagus.—O. (O.) pectinata, new species: 10, genitalia, lateral; 11, genitalia, dorsal.— O. (O.) aldama (Mosely) : 12, genitalia, lateral; 13, genitalia, dorsal.—O. (O.) stylata (Ross) : 14, genitalia, dorsal.—O. (O.) tarsalis (Hagen) : 15, genitalia, dorsal. NUMBER 1 1 8 19

22

23 FIGURES 16-27.—Ochrotrichia (O.) caimita, new species: 16, genitalia, dorsal; 17, genitalia, lateral.—O. (O.) pacifica, new species: 18, genitalia, dorsal; 19, genitalia, lateral.—O. (O.) arranca (Mosely) : 20, genitalia, dorsal; 21, claspers, ventral; 22, right clasper, outer side, after Mosely 1937; 23, left clasper, outer side, after Mosely 1937.—O. (O.) moselyi, new species: 24, genitalia, dorsal: 25, genitalia, lateral, without claspers; 26, right clasper, outer side; 27, left clasper, outer side. 20 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURES 28-38.—Ochrotrichia (O.) pectinifera, new species: 28, genitalia, dorsal; 29, genitalia, lateral; 30, right clasper, outer side.—O. (O.) tagala, new species: 31, genitalia, dorsal; 32, geni- talia, lateral.—O. (O.) tenanga (Mosely) : 33, genitalia, dorsal; 34, genitalia, lateral; 35, tenth tergum of male from Fortin de las Flores.—O. (O.) felipe Ross: 36, ninth and tenth terga, dor- sal.—O. (O.) palitla, new species: 37, genitalia, dorsal; 38, genitalia, lateral. NUMBER 1 1 8 21

FIGURES 39-46.—Ochrotrichia (O.) filiforma, new species: 39, genitalia, lateral; 40, genitalia, dorsal.—O. (O.) escoba, new species: 41, genitalia, lateral; 42, genitalia, dorsal.—O. (O.) cruces Flint: 43, genitalia, lateral; 44, genitalia, dorsal.—O. (O.) intermedia, new species: 45, genitalia, dorsal; 46, genitalia, lateral. 22 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

52

fiouREs 47-56.—Ochrotrichia (O.) panamensis, new species: 47, genitalia, dorsal; 48, geni- talia, lateral.—O. (O.) attenuata, new species: 49, genitalia, lateral; 50, genitalia, dorsal.—O. (M.) nigritta (Banks): 51, genitalia, lateral: 52, genitalia, dorsal.—O. (M.) arizonensis, new species: 53, genitalia, lateral; 54, genitalia, dorsal.—O (M.) biungulata, new species: 55, geni- talia, lateral; 56, genitalia, dorsal. NUMBER 1 1 8 23

68 FIGURES 57-68.—Ochrotrichia (M.) penicillata, new species: 57, genitalia, lateral; 58, genitalia, dorsal.—O. (M.) trigonella, new species: 59, genitalia, lateral; 60, genitalia, dorsal.—O. (M.) continentalis, new species: 61, genitalia, lateral; 62, genitalia, dorsal.—O. (M.) quadrata, new species: 63, genitalia, lateral; 64, genitalia, dorsal.—O. (M.) Umniscata, new species: 65, geni- talia, lateral; 66, genitalia, dorsal.—O. (M.) aberrans, new species: 67, genitalia, lateral; 68, genitalia, dorsal. 24 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 69.—Distribution of Ochrotrichia (O.) flagellata, new species, # ; O. (O.) pectinata, new species, -^-; O. (O.) caimita, new species, A ; O. (O.) aldama (Mosely), •

FIGURE 70.—Distribution of Ochrotrichia (O.) stylata (Ross), #. NUMBER 1 18 25

FIGURE 71.—Distribution of Ochrotrichia (O.) tarsalis (Hagen),

FIGURE 72.—Distribution of Ochrotrichia (O.) pacifica, new species, #; O. (O.) arranca (Mosely), -^-; O. (O.) moselyi, new species, A: 0. (O.) pectinifera, new species, • 26 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

FIGURE 73.—Distribution of Ochrotrichia (O.) tenanga (Mosely), #: O. ('OJ attenuate, new species, ^-.

FIGURE 74.—Distribution of Ochrotrichia (O.) tagala, new species, # ; O. (O.) felipe Ross, -Jr) O. (O.) palitla, new species, A ; O. (O.) escoba, new species, •. NUMBER 1 1 8 27

»s to

FIGURE 75.—Distribution of Ochrotrichia (O.) filiforma, new species, #; 0. (0.) cruces Flint, -^; O. (O.) intermedia, new species,A; O. (O.) panamensis, new species, •

FIGURE 76.—Distribution of Ochrotrichia (M.) nigritta (Banks), 0: O. (M.) arizonensis, new species, -^-; O. (M.) biungulata, new species, A- 28 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY

> 19 ^ T i— u \ 19 10 1 ^* s n

\ JO 19 ^~

JO L '.i i I 0 1 1 i rr no IO9 I0O » I »o • 9 to /7J \

FIGURE 77—Distribution of Ochrotrichia (M.) penicillata, new species, #; O. (A/.,) continen- talis, new species, ^-; O. ('A/.^) trigonella, new species, A-

FIGURE 78.—Distribution of Ochrotrichia (M.) Umniscata, new species, %; O. (M.) quadrata, new species, •^; O. (M.) aberrans, new species, A-

* U-S. GOVERNMENT PRINTING OFFICE: 1972 O 484—31S/17

Publication in Smithsonian Contributions to Zoology

Manuscripts for serial publications are accepted by the Smithsonian Institution Press, sub- ject to substantive review, only through departments of the various Smithsonian museums. Non- Smithsonian authors should address inquiries to the appropriate department. If submission is invited, the following format requirements of the Press will govern the preparation of copy. Copy must be typewritten, double-spaced, on one side of standard white bond paper, with 1%" top and left margins, submitted in ribbon copy with a carbon or duplicate, and accompa- nied by the original artwork. Duplicate copies of all material, including illustrations, should be retained by the author. There may be several paragraphs to a page, but each page should begin with a new paragraph. Number consecutively all pages, including title page, abstract, text, litera- ture cited, legends, and tables. The minimum length is 30 pages, including typescript and illus- trations. The title should be complete and clear for easy indexing by abstracting services. Taxonomic titles will carry a final line indicating the higher categories to which the taxon is referable: "(Hymenoptera: Sphecidae)." Include an abstract as an introductory part of the text. Identify the author on the first page of text with an unnumbered footnote that includes his professional mailing address. A table of contents is optional. An index, if required, may be supplied by the author when he returns page proof. Two headings are used: (1) text heads (boldface in print) for major sections and chap- ters and (2) paragraph sideheads (caps and small caps in print) for subdivisions. Further headings may be worked out with the editor. In taxonomic keys, number only, the first item of each couplet; if there is only one couplet, omit the number. For easy reference, number also the taxa and their corresponding headings throughout the text; do not incorporate page references in the key. In synonymy, use the short form (taxon, author, date:page) with a full reference at the end of the paper under "Literature Cited." Begin each taxon at the left margin with subse- quent lines indented about three spaces. Within an entry, use a period-dash (.—) to separate each reference. Enclose with square brackets any annotation in, or at the end of, the entry. For references within the text, use the author-date system: "(Jones 1910)" and "Jones (1910)." If the reference is expanded, abbreviate the data: "Jones (1910:122, pi. 20: fig. 1)." Simple tabulations in the text (e.g., columns of data) may carry headings or not, but they should not contain rules. Formal tables must be submitted as pages separate from the text, and each table, no matter how large, should be pasted up as a single sheet of copy. Use the metric system instead of, or in addition to, the English system. Illustrations (line drawings, maps, photographs, shaded drawings) can be intermixed throughout the printed text. They will be termed Figures and should be numbered consecu- tively; however, if a group of figures is treated as a single figure, the components should be indicated by lowercase italic letters on the illustration, in the legend, and in text references: "Figure 9b." If illustrations (usually tone photographs) are printed separately from the text as full pages on a different stock of paper, they will be termed Plates, and individual components should be lettered (Plate 9b) but may be numbered (Plate 9: figure 2). Never combine the numbering system of text illustrations with that of plate illustrations. Submit all legends on pages separate from the text and not attached to the artwork. An instruction booklet for the preparation of illustrations is available from the Press on request. In the bibliography (usually called "Literature Cited"), spell out book, journal, and article titles, using initial caps with all words except minor terms such as "and, of, the." For capitalization of titles in foreign languages, follow the national practice of each language. Underscore (for italics) book and journal titles. Use the colon-parentheses system for volume, number, and page citations: "10(2) :5-9." Spell out such words as "figures," "plates," "pages." For free copies of his own paper, a Smithsonian author should indicate his requirements on "Form 36" (submitted to the Press with the manuscript). A non-Smithsonian author will receive 50 free copies; order forms for quantities above this amount with instructions for pay- ment will be supplied when page proof is forwarded.