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)

marginal scutellar bristles, as usual. 2 sternopleurals, the posterior strong and long. — Legs blackish brown, except for the slightly paler trochanters, knees and tarsi. Chaetotaxy of mid tibia as in Figs 4, 5, thus with short posteroapical pair of bristles. Basitarsus with a strong ventral bristle. Ratio t

2

: mt

2 ( = mid tibia : mid basitarsus) = 1.97. — Wing (Fig. 38) with pale brownish membrane and brown veins. First costal sector sparsely haired. C hardly reaching beyond R

i+5

. R

2+3 long, very slightly bent up to C. R

4+5 distinctly curved up to C but less than that of L. fontinalis. — Discal cell of medium length, tapered distally, with short pigmented processes of M

1+2 and M

3+i beyond r

p

, the latter being continued by a colourless venal fold. A long and sinuate. Alula large, broad, apically tapered. Wing measurements: length 2.30 mm, width 0.95 mm, C-index = 2.02, f

a-/

p

: t

p = 3.00. Haltères dirty yellowish brown. Abdomen dark brown, pollinose, subshiny. Terga finely and sparsely haired ; 3rd-5th tergum with long bristles in posterior corners (becoming longer posteriorad). Sterna densely and shortly setulose. 5th sternum is the widest sternum (Fig. 6), rather densely setulose on disc, with some longer bristles at posterior margin and with small membraneous and finely pubescent posteromedial area •which is smaller and with finer pilosity than that of L. fontinalis. Genitalia. — Periandrium (Fig. 1) shortly and sparsely haired but with a long caudal bristle and dense micropubescence lateroproximaly. Hypandrium relatively long, Y-shaped. Intraperiandrial sclerite large, subanal plate absent. Pseudocerci relatively removed each from other and bearing comparatively short hairs and a slender ventral projection. Telomere (Fig. 2) bipartite. The fore part very wide and short (low), with long, bent, finely pubescent (particularly on inner side) anterior projection; its posterior lobe highly characteristic with respect to the shape and pigmentation, armed by short setulae and 1 robust posterior spine arising on darkly pigmented projection. Hind part of telomere bearing a group of long setiform hairs on proximal half (as in L. fontinalis) and 1 robust apical spine and 2 anterior bristles in distal half; also the external apical small pale projection developed as usual. Aedeagal complex (Fig. 3) most resembling that of L. fontinalis in having similarly shaped postgonite but the structure of distiphallus is slightly different (more curved dorsal sclerite, finely spinulose ventral part). Ejaculatory apodeme well developed. ç unknown. Distribution — Known only from unique holotype male from the USSR: Far East, Amur area. Discussion — L. vomerata sp. n. seems to be closely allied to L. fontinalis (FALLEN) because it has similarly formed telomere (particularly its hind part) and aedeagal complex (especially postgonite). It can hardly be distinguished from the latter species by outer features (although R

i + 5 is somewhat less curved and acrostichal macrochaetae are shorter); the main differences can be found in the structure and armature of the fore part •of telomere and male 5th sternum. Leptocera (Leptocera) equispina L. PAPP, 1973 (Figs. 7—14, 49) Leptocera (Leptocera) equispina L. PAPP, 1973, Acta zool. hung., 19: 423, o* ç . Type material — Holotype d* : Mongolia, Central aimak, Ulan-Baator, Zaisan im Bogdo ul, 1600 m, Exp. DR. Z. KASZAB, 1966, 6 VI 1966 (Nr. 499). — Paratypes: 1 ç : Mongolia, Bulgan aimak, zw. Somon Chischig-Öndör, 1390 m, Exp. DR. Z. KASZAB, 1968, 15 VI-23 VII 1968 (Nr. 965); 1 $ : Bulgan aimak, 7 km NW von Somon Chanzargalant, 1350 m, Exp. DR. Z. KASZAB, 1968, 16 VI 1968 (Nr. 969). AU in HNHM (examined). Description: — d*. Total body length 1.73 mm; general colour brownish black, dark greyish brown pollinose, subshiny. — Head brownish black; frontal triangle rather shining, interfrontalia and orbits silvery grey dusted and glittering; rest of frons blackish grey dusted, dull. Cephalic chaetotaxy as in L. fontinalis; postverticals weak but crossed. 3 stronger and 1 small interfrontals (recognized from basal scars); about 5 minute additional setulae inside and below orbitals. Carina brown, facial cavity blackish and rather shining. Carina somewhat prominent between antennái bases. Gena greyish dusted, genal bristle rather long but thin. Eye normal in size, its diameter about 3.5 times as long as the smallest genal width. Antennae blackish brown with paler 3rd segment. Arista about 3.6 times as long as antenna, short haired. Thorax brownish black; mesonotum more shining despite brownish grey pollination; pleurae duller. 2 humerais plus 1 microseta on humeral callus. 5(2+3) dorsocentrals becoming shorter .anteriorad; 8 rows of acrostichal microsetae in front of suture; medial acrostichals hardly enlarged,