DIPTERA FROM NEPAL 39 



Face pale yellowish white, somewhat narrowing below. Carina high, long, yellowish white, 

 reaching buccal margin. Cheeks pale yellowish white, slightly less than one-fourth as broad as 

 the greatest diameter of an eye. Occiput pale yellowish grey. Proclinate orbital slightly 

 inside posterior reclinate ; anterior reclinate minute, not distinguishable from adjacent micro- 

 trichia, outside other orbitals, almost equally distant from proclinate and posterior reclinate. 

 Vibrissae strong, second oral slender. 



Mesonotum yellowish brown, matt. Scutellum pale yellowish grey, matt, slightly pollinose. 

 Thoracic pleura pale yellowish white, somewhat fuscous above. Only one humeral. Acro- 

 stichal hairs in about six rows. Distance between anterior and posterior dorsocentrals about 

 five-sevenths distance between anterior pair. Anterior scutellars divergent, small, one-third 

 length of posteriors, which are somewhat divergent and nearly equidistant from each other and 

 from anteriors. Posterior sternopleural long, others missing. Legs yellow, anterior femur 

 with a few long hairs below ; claws long ; all metatarsi subequal to the next three segments 

 together ; last tarsal segment large. Preapicals on all legs ; apicals prominent on mid legs. 

 Wing hyaline, second costal incision very deep ; tip pointed. i? 2 + 3 apically curved to costa ; 

 7? 1+5 and M medially somewhat convergent. C-index about 11 ; 4V-index about 3-6 ; 4C- 

 index about 33 ; 5x-index about 57 ; Ac-index about 36. Ci -bristles two ; C3-fringe on 

 nearly entire length. Halteres yellowish brown. Abdominal tergites matt black ; iT pale 

 yellowish grey, with dark patches ; 2T yellowish white laterally. Abdominal sternites pale. 



Periphallic organs : Pregenital lobe long, club-shaped, pale orange. Genital arch pale 

 yellowish brown, nearly bare, ventrally pointed ; heel very high. Clasper apparently fused to 

 genital arch, crescentic, pale brown. Anal plate pale brown, setigerous, narrow but long, 

 ventrally curved anteriorly. Phallic organs not examined. 



Holotype <$. East Nepal : Taplejung District, Dobhan, east bank of River 

 Tamur, mixed vegetation by stream in deep gully, c. 3,500', i-ii.1962 (R.L.C.), 

 BMNH. 



Resembling M. tectifrons (de Meijere, 1914) (Java) in having pointed wings and 

 only one ventral branch of arista, but differs in the paler body, R 2+3 not straight, 

 and carina well developed. Belonging to the subgenus Oxystyloptera Duda, 1924. 



Microdrosophila sp. 



1 ex. Head much broader than thorax. Eyes green-black, thickly grey pilose. Antennae 

 with second segment globular, yellowish brown, paler below ; third dark brown, oval, paler 

 caudally. Arista with four dorsal and three ventral branches and a large terminal fork. Palpus 

 yellowish brown, subapically with two strong black setae. Occllar triangle glossy black, convex. 

 Periorbit glossy grey, broad, medially somewhat constricted, anteriorly truncate, four-fifths as 

 long as front. Front greyish yellow, anteriorly paler, black inside periorbits, with a pair of 

 large triangular anteriorly pointed black patches. Clypeus pale brown, medially with a dark 

 narrow cross stripe. Face yellow, very broad, parallel-sided. Carina large, high, pale. Cheek 

 greyish white, three-eighths as broad as the greatest diameter of eye. Occiput yellowish grey. 

 Anterior reclinate orbital minute, just outside proclinate, nearer to proclinate than to posterior 

 reclinate, which is longer than anterior reclinate. Second oral two-thirds as long as vibrissa, 

 succeeding orals slender. 



Mesonotum greyish yellow, matt, with five narrow dark brown longitudinal stripes, median 

 one broadest. Scutellum greyish yellow, with a pair of broad dark longitudinal stripes. Thoracic 

 pleura pale yellowish grey, with two dark longitudinal stripes. One long humeral. Acro- 

 stichal hairs in six rows. Distance between anterior pair of dorsocentrals equal to distance 

 between anterior and posterior pairs. Anterior dorsocentrals two-thirds as long as posteriors. 

 Anterior scutellars divergent, as long as posteriors, which are nearer to each other than to 

 anteriors. Sterno-index about 08. Legs yellow, fore and hind metatarsi subequal to next 



