Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 68. (Budapest 1976)

Huddleston, T.: A revision of Elasmosoma Ruthe (Hymenoptera, Braconidae) with two new species from Mongolia

of the International Code of Zoological Nomenclature. I therefore regard luxemburgense as a valid nominal species. This species very closely resembles E. pergandei ASHM. from which it may be distinguished by the characteristics of its hypopygium. In luxemburgense the hypopygium is broad but relatively short, shining and punctate with extremely long hairs. The apex of the hypopygium is slightly emarginate and with a small triangular membranous area centrally. The propodeum is reticulate-coriaceous between prominent rugae, with a strong but irregular transverse carina. The colour pattern of the gaster is similar to pergandei with tergite 2 and the base of tergite 3 yellow. The two Specimens examined are mounted on separate card points on the same pin. I designate as lectotype the specimen on the top mount. 2 $ : Luxemburg, 29.7. 07. F. rufibarbis, WASMANN (NHM). Host record : Formica rufibarbis FABRICIUS (determination confirmed by B. BOLTON). Elasmosoma pergaiulei ASHMEAD Elasmosoma pergandei ASHMEAD 1895: 283. Holotvpe $, USA: Washington, DC. T. PERGANDE, 29. V. 1895 (USNM, 23985) (examined). This appears to be the most widespread species of Elasmosoma. The most characteristic feature of pergandei is the hypopygium (fig. 5) which is long, broad, shining and punctate with a marginal fringe of hairs. The depth of the emargination at the apex of the hypopygium varies slightly ; the hypopygium in the six female specimens from McHenry Co., Nu, appears to be thinner and the emargination of its apex slightly deeper than that of typical pergandei. These differences are insufficient to justify the separation of the six specimens as a new species, they must therefore remain atypical pergandei until enough material is available for their true position to be determined with confidence. The length of the hair fringe also varies slightly — possibly due to wear. In mounted Specimens the hypopygium of pergandei is almost invariably flat and projects beyond the sides of the gaster whereas in most other species the structure frequently dries in the folded position. It is scarcely conceivable that two Series, one of conspecific males the other of conpecific females, taken over at the same period of time in the same malaise trap, should be of different species. The series of three males from McHenry Co. ND., must therefore be regarded as the hitherto unknown male of pergandei. If the female series is found eventually to be distinct from pergandei the males of course will fall into the new Species which t will then be necessary to erect. 9 9. USA : Moorestown, NJ., VI. 7. 37., R. T. WHITE (BMNH) Chelan, Wash., 5. 30. 41, H. W. PRESCOTT; Colo. 2175, coll. C. F. BAKER; McHenry Co. ND., Sec. 36, T. 156, R. 78, in a Malaise trap on the following dates — 27. V.-3. VI. 1969 (two specimens), 6-11. VII. 1969, 11-17. VII. 1969 (two specimens), 29. VIII.-2. IX. 1969. (USNM). —Mongol i a, Bajanchongor aimak : Talvn Bilgech bulag, Quelle zwischen Tost ul und Cagaan Bogd ul Gebirge, 1200 m, 23. VI. 1967 (Nr. 838) (HNHM); Oase Echin gol, cca 90 km NO« vom Grenzposten Cagaanbulag, 950 m, 27-29. VI. 1967 (Nr. 857) (HNHM), Exp. KASZAB. rfrf USA: McHenry Co. ND., Sec. 36, T. 156, R. 78, 3-11. VI. 1969, 11-18. VI. 1969, 22-24. VII. 1969 (USNM). Host records: Formica fusca var. subsericea SAY, Formica ruf a intégra NYE, Campo~ notus castaneus (LATR.). Elasmosoma petulatis MUESEBECK Elasmosoma petulans MUESEBECK, 1941: 200. Holotvpe 9J USA: Ohio, Jackson, L. G. WESSON, 15. VII. 1938 (USNM, 55665) (not examined). I have seen one of the female paratypes of this species — it is as MUESEBECK has described save that the first tergite of the gaster is distinctly broader distally than long. Paratype $, USA: Ohio, Jackson, L. G. WESSON, 15. VIII. 1938 (USNM); USA: Wyoming GTNP Moose Island, 6700' Aug. 15th. 1964, J. CUMMINGS "Alighting on anus of Formica opaciventris" (USNM). Host record : Formica sanguinea rubicunda EMERY.