AMERICAN MUSEUM Novttates PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY CENTRAL PARK WEST AT 79TH STREET NEW YORK, N.Y. 10024 U.S.A. NUMBER 2697 JULY 11, 1980 RANDALL T. SCHUH AND JOHN D. LATTIN Myrmecophyes oregonensis, a New Species of Halticini (Hemiptera, Miridae) from the Western United States AMERICAN MUSEUM Novitates PUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORY CENTRAL PARK WEST AT 79TH STREET, NEW YORK, N.Y. 10024 Number 2697, pp. 1-1 1, figs. 1-9 July 11, 1980 Myrmecophyes oregonensis, a New Species of Halticini (Hemiptera, Miridae) from the Western United States RANDALL T. SCHUH1 AND JOHN D. LATTIN2 ABSTRACT Myrmecophyes oregonensis (Hemiptera, Miri- female genitalia, femoral trichobothria, and pre- dae, Orthotylinae, Halticini) is described as new tarsus. This saltatorial antlike species apparently from central and south central Oregon. This is the breeds on the native perennial bunch grass Agro- first record of the genus from the Western Hemi- pyron spicatum. sphere. Information is provided on the male and INTRODUCTION The present paper is the result of recent nymphs. Messrs. Michael Schwartz and Gary work in central and south central Oregon, Stonedahl collected material from two addi- where a single female mirid was found and tional localities. We thank Ms. Bonnie Hall which could not be placed in any genus pre- for the dorsal view drawings, Ms. Kathleen viously known from North America. Subse- Schmidt for the line drawings and Ms. Bren- quent collecting yielded numbers of males da M. Massie for help with the preparation and females such that comparisons with pre- of the manuscript. The Oregon State Uni- viously described taxa were possible. versity General Research Fund provided Mr. David Lightfoot made the initial cap- funds for the dorsal view drawings. ture in 1976, recognized the unusual nature Abbreviations in the locality data are: of the specimen, and made special efforts to American Museum of Natural History obtain additional material. Dr. Paul Oman (AMNH); California Academy of Sciences provided valuable assistance in collecting the (CAS); Zoological Institute, Leningrad (LM); large series in 1978 and 1979. Dr. James Oregon State University Systematic Ento- Kamm made available vacuum sampler col- mology Laboratory (OSU); National Muse- lections taken at the type locality in 1974 by um of Natural History, Smithsonian Insti- Mr. James Todd that contained adults and tution (USNM). 1 Associate Curator, Department of Entomology, American Museum of Natural History. 2 Professor, Department of Entomology, Oregon State University, Corvallis, Oregon. Copyright ©) American Museum of Natural History 1980 ISSN 0003-0082 / Price $ 1. 10 2 AMERICAN MUSEUM NOVITATES NO. 2697 FIG. 1. Myrmecophyes oregonensis. 1980 SCHUH AND LATTIN: MYRMECOPHYES OREGONENSIS 3 FIG. 2. Anupus umericunus. 4 AMERICAN MUSEUM NOVITATES NO. 2697 Myrmecophyes oregonensis, new species tum; height of face below eyes slightly greater Figures 1-19 than twice the height of an eye (fig. 4); anten- nae inserted well below ventral margin of eye, DIAGNOSIS: Recognized by its elongate all segments cylindrical, one slightly enlarged, face, with the height of the face below the two increasing slightly in diameter distally, eye slightly greater than two times the height diameter of three and four subequal to distal of the eye, the substylate eyes projecting portion of segment two (see measurements); well beyond the lateral margins of the prono- labium very stout, reaching to posterior mar- tum, the generally highly polished shining gin of second abdominal sternite (fig. 5); body surface, the strongly basally constrict- pronotum more or less quadrate in dorsal ed abdomen, striking antlike habitus, and the view, anterior margin smoothly convexly form of the male genitalia. curved, flattened, and weakly reflexed; lat- DESCRIPTION: Brachypterous male. Fig- eral margins smoothly rounded in all views, ures 1, 3-5. Small, antlike; pronotum, hem- posterior margin concave across scutellum; elytra, and abdomen jet black; scutellum pronotal lobes not demarcated, disc with two with reddish cast posteromesially; head, weak, proximal depressions; scutellum de- meso- and metathoracic pleura, and legs ex- clining steeply from midline, without carinae cept tarsi, medium orange-brown; antennal or impressed lines; hemelytra greatly re- segments one and two pale yellow brown; duced, undifferentiated, reaching only to frons and labrum usually infuscate; tibiae posterior margin of abdominal tergite two; distally, all tarsi, and antennal segments three claval suture represented posteriorly by a and four nearly black; spines on antennal distinct carina, lateral and posterior hemel- segment one and all femora and tibiae black. ytral margins narrowly but distinctly re- Dorsum except scutellum highly polished, flexed; abdomen greatly expanded posterior shining; scutellum shagreened, with whitish to basal segments, especially in lateral view, bloomlike appearance; thoracic pleura and lateral margins evenly rounded in dorsal all appendages dull; head and pronotum with view; dorsal margin of genital capsule a few nearly erect black hairs; claval portion strongly sloping posteroventrally in lateral of hemelytra and abdominal tergites three, view; protibiae relatively short, distinctly in- four, and five with weakly shining, appressed, creasing in diameter distally, mesotibiae and scalelike setae; remainder of abdominal dor- metatibiae cylindrical; metafemora not con- sum with scattered, short, reclining setae, ab- spicuously enlarged; six mesofemoral tricho- dominal venter with numerous, relatively bothria (fig. 6), seven metafemoral tricho- long, light, reclining setae; mesial and ventral bothria (fig. 7), basal structure of surface of antennal segment one with ap- trichobothria as in figure 16, trichoma com- proximately 10 erect black spines of length pact, bothrium recessed; tarsi as in figure 1, slightly greater than diameter of segment, claws relatively broad basally, smoothly segments two, three, and four with short re- curved and tapering distally, pulvilli absent; clining vestiture mixed with slightly longer claw hairs absent, basal claw spicules pres- reclining black setae; femora with some in- ent (figs. 17-19; see Schuh, 1976), parem- conspicuous, reclining, pale setae and a few podia fleshy, recurved, convergent apically. semierect black spines on dorsal surface; MALE GENITALIA: Figures 8-10. Vesica tibiae with scattered, erect spines about as with a well-developed secondary gonopore, long as tibial diameter. two confluent subterminal, spinose lobes, Head vertical; vertex broad, smooth, ecar- and two heavily sclerotized spines, one lan- inate, nearly flat in frontal view at about level ceolate, the other with a curved distal por- as dorsal margin of eyes (figs. 4, 5); eyes rel- tion and a median thumblike projection; left atively small, substylate, well removed from paramere with more or less cylindrical shaft, anterolateral angles of pronotum and pro- tapering distally, hooked apically, and with jecting well beyond lateral margins of prono- a row of erect setae subapically on outer 1980 SCHUH AND LATTIN: MYRMECOPHYES OREGONENSIS 5 4 6 8 7 FIGS. 3-10. Myrmecophyes oregonensis. 3. Dorsal view of male. 4. Frontal view of head of male. 5. Lateral view of male. 6. Mesofemoral trichobothria. 7. Metafemoral trichobothria. 8. Left para- mere. 9. Right paramere. 10. Lateral view of aedeagus, including phallobase. margin; right paramere with a long basal Posterior wall anterolaterally with fine, shaft, flattened and spoon shaped distally closely spaced, transverse striae, posteriorly with a single row of erect setae. with a distinctly sclerotized trapezoidal BRACHYPTEROUS FEMALE: Figures 11- platelike area with a "finger-like" projection 13. Very similar in coloration, vestiture, and arising laterobasally; sclerotized structures body surface texture to male, body propor- in vulvar area between bases of anterior tions different (compare figs. 3-5 and 11-13 ovipositor valves symmetrical; rings of bursa and measurements); abdomen more conspic- copulatrix lightly sclerotized, not inflexed uously bulbous than in male. laterally. FEMALE GENITALIA: Figures 14, 15. MEASUREMENTS (MALE AND FEMALE, RE- 6 AMERICAN MUSEUM NOVITATES NO. 2697 12 FIGs. 11-15. Myrmecophyes oregonensis. 11. Dorsal view of female. 12. Frontal view of head of female. 13. Lateral view of female. 14. Posterior wall of female genitalia. 15. Dorsal view of bursa copulatrix and associated structures of female. 1980 SCHUH AND LATTIN: MYRMECOPHYES OREGONENSIS 7 ¢- ^ - 9 1 . _ 'A a .;. J--rwi _ u r- j -~~~~~~~~~~ .~~m I A9 FIGS. 16-19. Myrmecophyes oregonsis. 16. Mesofemoral trichobothrium, 2200x. 17. Base of claw, lateral view, 2100x. 18. Lateral view of claw, 800x. 19. Lateral view of claw, 1850x. SPECTIVELY): Total length 2.53, 3.03; length M. Schwartz, R. T. Schuh; AMNH, LM, of head .28, .45; width of head .88, 1.03; in- OSU), 566, 9??. Harney County: same terocular space .45, .58; height of head .90, data as holotype (AMNH, CAS, LM, OSU, 1.03; length of pronotum at midline .41, .50, USNM), 15 6 6, 6 9Y; same data as holotype width of pronotum .63, .70; length of scutel- but June 11, 1974, Range 6, in, ex Agropyron lum .30, .28; width of scutellum .48, .50; spicatum, D-Vac sample (26 6, 2??), maximum length of hemelytra .48, .63; Range 6, in, ex Festuca idahoensis, D-Vac length of claval commissure .30, .33; length sample (266), Range 6, in, misc., D-Vac of metatibia 2.00, 2.15; antennal segments- sample (16, 1 ), Range 7, in, ex Agropyron one .40, .38, two 1.33, 1.25, three .90, .93, spicatum, D-Vac sample (1 9), Range 7, in, four .33, .35. ex Festuca idahoensis (13), Range 7, out, HOLOTYPE: Brachypterous male. Ore- ex Agropyron spicatum, D-Vac sample (16), gon, Harney County, Headquarters Squaw Range 7, out, misc., D-Vac sample (16, 1?) Butte Experiment Station, 55 km. W of (all J. Todd; OSU); same data as holotype Burns, 1540 m., June 15, 1978, J. D. Lattin but July 1, 1976 (D. Lightfoot; AMNH), 1 9; and P. Oman; deposited in American Mu- entrance, Squaw Butte Experiment Station, seum of Natural History. June 15, 1978 (J. D. Lattin, P. Oman; OSU), PARATYPES: OREGON. Deschutes 466, 2?Y.