Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 75. (Budapest 1983)

Roháček, J. ; Papp, L.: Revision of the East Palaearctic species of the Leptocera (s. str.) fontinalis-group (Diptera, Sphaeroceridae)

guished particularly by very long and slender postgonite with characteristic apex. Distiphallus highly similar to that of L. finalis. Ejaculatory apodeme present, well developed. ?. Head, thorax, legs, wing and preabdomen as in male unless mentioned otherwise. Total body length 2.02-2.42 mm; ratio t

2 mt* = 1.81-1.95. Wing measurements: length 2.14-2.56 mm, width 0.83-1.05 mm, C-index = 1.61-2.ÖO, f

a-/

p

: t

p = 2.36-3.20. 5th sternum unmodified, densely setulose. Postabdomen (Figs 15, 16). 6th tergum simple, transversely oblong, with a long bristle in posterior corners. 7th tergum short, very transverse, with a narrow, darkly pigmented, transverse stripe. 8th tergum divided into 2 lateral plates, each bearing about 3 bristles and a slender ventral projection reaching far on ventral side of postabdomen. 9th tergum darkly pigmented,' completely fused with cerci and without dorsal setulae. 6th sternum simple, shortly uniformly setulose. 7th sternum narrower than 6th sternum, with 4 longer setae besides short setulae on posterior margin. 8th sternum plate-shaped, flat, rather long, with projecting posterior corners and with 2 small setulae on each side of the posteromedial structure. Internally there is a "spectacles-shaped" sclerite round the vagina though much less distinctly developed then in some groups of the Limosina complex (see ROHÁÖEK 1982b). 9th sternum anteriorly of complex structure but membraneous, posteriorly divided into 2 pieces and ventrally densely setulose. Spermathecae (Fig. 17) egg- to pear-shaped, with thorn-like tubercles on proximal part of body and with very long and slender sclerotized parts of ducts. Cerci fused with 9th tergum and unusually long haired, especially their apical sinuate hair almost as long as 9th tergum and cerci together. Distribution - Widely distributed in Mongolia (Bajan-Ölgij, Chövsgöl, Uvs, Central, Archangaj and Bajanchongor aimaks) (PAPP 1973, 1974) but unrecorded from adjacent areas till now. Discussion — L. parafinalis is closely related to L. finalis (COLL.) and resembles it in outer body features as well as general construction of the male genitalia and female terminállá. However, it can be safely distinguished from L. finalis by longer and more robust bristles on mid tibia (see Figs 21,22), more upcurving -#

4 + 5

, shape of the fore part of telomere, slender pseudocerci, long and very slender postgonite, characteristic bare 9th female tergum fused with long haired cerci etc. Leptocera (Leptocera) finalis (COLLIN, 1956) Material examined — USSR: 1 d: Amurskaya obi., g. Zeya, 8 VIII 1981, A. SHATALKIN; 1 ? : ibid., 15 VIII 1981; 1 ? : 31 VIII 1981; 1] o': 12 IX 1981 (1 d HNHM, others MGU). For redescription, figures of the male and female tarminalia, distribution and biology see ROHÁCEK 1982a. L. finalis has previously been recorded only from northern areas in Europe, south to England, Denmark and North Poland 1. c. New to the East Palaearctic. Leptocera (Leptocera) spinitarsata L. PAPP, 1973 (Figs 23-27, 41) Leptocera (Leptocera) spinitarsata L. PAPP, 1973, Acta zool. hung., 19: 424, d. Type material — Holotype o" : Mongolia, Chentej aimak, 150 km ONO von Öndörchaan, 10 km S von Kerulen, 1000 m, Exp. DR. Z. KASZAB, 1965, 30 VII" 1965 (Nr. 331). Deposited in HNHM (examined). Description— d. Total body length 2.30 mm, general colour brownish black, dark greyish brown pollinose, dull. — Head brownish black. Frons brown to reddish brown anteriorly to black posteriorly. Narrow interfrontalia and orbits silvery grey, rest of frons brownish grey pollinose. Cephalic bristles strong. Postverticals thin but crossing; 3 stronger interfrontals becoming longer anteriorad and 1 small and weak one more anteriorly ; an additional microseta laterad to latter interfrontal seta. About 5 minute additional setulae inside and below orbitals. Frontal lunule, face and gena brown, dusted. Facial cavity dark brown, rather shiny. Genal bristle of medium length. Eye normal, its diameter about 3.2 times as long as the smallest genal width. Antennae blackish, 3rd segment dark brown. Arista about 3.9 times as long as antenna, short haired. Thorax brownish black, dark brown pollinose. Mesonotum only slightly shining, pleurae dull. 2 humeral bristles (the external very long) and 1 microseta on humeral callus. 5 (2 +3) dorso-