40 T. OKADA 



three segments together, mid metatarsi subequal to the following segments together. Pre- 

 apicals on all legs ; apicals prominent on mid leg. Wing hyaline, 21 mm. in length ; first 

 costal section apically much swollen and black ; second costal break deep. R 2 + 3 straight. 

 Wing-tip somewhat pointed. i? 4 + 5 and M parallel. C-index about i -8 ; 4.V-index about i g ; 

 4-C-index about 1-3 ; 5x-index about 2-0 ; Ac-index about 3-3. Ci-bristles two ; C3-fringe 

 on basal half. Halteres missing. Abdomen missing. 



Taplejung District, between Sangu and Tamrang, mixed shrubs in deep gorge, 

 c. 5,200', x-xi.1961, 1 ex (R.L.C.). 



Characters intermediate between Styloptera Duda, 1924 and Microdrosophila 

 Malloch ; first costal section apically swollen and black as in Styloptera, acrostichal 

 hairs in six rows as in Microdrosophila. A deep incision at the second costal 

 break suggests that this species belongs to the subgenus Oxy styloptera Duda. 



Microdrosophila pauciramosa sp. n. 



(Text-figs. 101-103) 



$. Body about 1-5 mm., yellowish brown. Head broader than thorax. Eyes deep purple- 

 red, oval, pilose, with caudal margin straight. Antennae dark yellowish brown, third segment 

 quadrate, slightly longer than broad. Arista with only three dorsal and two ventral sparsely 

 arranged branches and a large terminal fork. Palpus pale yellow, broad, with two stout bristles 

 below near apex. Ocellar triangle black ; ocelli pale. Periorbit large, somewhat convex, 

 pale yellowish brown, anteriorly broadened and reaching anterior margin of front. Front pale 

 yellowish grey, medio-anteriorly orange, anteriorly twice as broad as length down middle, 

 posteriorly somewhat wider and about five-ninths as broad as head width. Clypeus dark brown. 

 Face yellowish white, slightly narrowing below, buccal margin white. Carina high, long, 

 reaching near buccal margin. Cheek pale yellowish white, darker above, about one-third 

 as broad as the greatest diameter of eye. Occiput pale yellow, darker below. Proclinate 

 orbital slightly shorter than posterior reclinate, close to and outside posterior reclinate ; anterior 

 reclinate minute, just outside posterior reclinate. 



Mesonotum dirty yellowish brown, slightly glossy, with three indistinct longitudinal dark 

 patches. Scutellum dirty yellowish brown. Thoracic pleura pale yellow, darker above. 

 Humeral callus dark brown. Only one humeral. Acrostichal hairs in about eight rows. 

 Distance between anterior pair of dorsocentrals about one and a half times distance between 

 anterior and posterior pairs. Anterior scutellars slightly shorter than posteriors, divergent ; 

 posterior scutellars as long as posterior dorsocentrals. Sterno-index about 0-4. Legs pale 

 yellowish brown ; front metatarsi subequal in length to next three segments together, mid and 

 hind metatarsi subequal to the rest of segments. Fore femur and mid coxa with long hairs 

 below. Preapicals on all legs ; apicals prominent on mid leg. Wings hyaline ; crossveins 

 clear ; first costal section distally curved posteriorly and swollen ; costa reaching M ; R 2 +s 

 subapically gently curved to costa ; i? 4 + 5 and M parallel. C-index about 1 -g ; 4"V-index about 

 5-2 ; 4C-index about 2-7 ; 5x-index about 75 ; Ac-index about 4-3. Ci-bristles two ; C3- 

 fringe on basal two-thirds. Halteres greyish brown. Abdominal tergites dirty yellowish brown, 

 laterally darker, with irregular dark brown clouds, posterior margin narrowly grey. Abdominal 

 sternites pale. Cerci broader than long. 



Holotype $. East Nepal : Taplejung District, Sangu, mixed vegetation by 

 stream in gully, c. 6,200', xi.1961 -i.1962 (R.L.C.), BMNH. 



Somewhat resembles M. cristata Okada, i960 in having obscurely demarcated 

 mesopleural dark stripe, gently curved i? 2+3 , and orbitals close to each other, but 

 differs from it in having fewer aristal branches, posterior reclinate orbital not inside 

 proclinate and lesser range of C3-fringe. 



