DIPTERA FROM NEPAL 41 



Microdrosophila nigripalpis sp. n. 



(Text-figs. 104-107) 



$. Body about 2 mm., dark yellowish brown. Head slightly broader than thorax. Eyes 

 deep purplish black, thickly pilose. Antennae dark greyish brown ; second segment large, 

 oval ; third triangular, short, with long pubescence. Arista with seven dorsal and three 

 ventral long branches and a moderate terminal fork. Palpus black, slender, apically rounded, 

 with a few stout black setae below near apex. Ocellar triangle black ; ocelli pale yellow. 

 Periorbits quite large, anteriorly broadened, pale yellowish white, convex, reaching anterior 

 margin of front. Front short, anteriorly nearly four times as broad as length down middle, 

 posteriorly more than half as broad as head width, dark orange-brown, caudally black. Clypeus 

 pale yellow. Face pale, laterally concave. Carina pale yellow, large, long, evenly convex, 

 extending near buccal margin. Cheeks yellowish white, black above, about one-fourth as broad 

 as the greatest diameter of eye, narrow below. Occiput pale yellow, black below. Three 

 orbitals close to each other ; proclinate orbital about half as long as posterior reclinate, just 

 before and outside posterior reclinate ; anterior reclinate minute, slightly outside proclinate. 

 Only one stout oral. 



Mesonotum yellowish brown, with three broad black longitudinal stripes ; median stripe 

 diffuse, reaching apex of scutellum ; lateral stripes well demarcated, not extending in front of 

 suture. Scutellum laterally yellowish brown, medially dark. Thoracic pleura pale yellow 

 below, with broad black longitudinal stripe above. One humeral. Acrostichal hairs in about 

 eight rows. Distance between anterior and posterior dorsocentrals about three-fourths distance 

 between anterior pair ; anterior dorsocentrals slightly shorter than posteriors, situated near 

 the suture. Anterior scutellars missing ; posteriors slightly divergent, twice length of scutellum. 

 Sterno-index about 03. Legs yellowish grey ; mid and hind pairs with distal half of femur and 

 proximal part of tibia brownish black ; all metatarsi nearly as long as the other segments 

 together. Preapicals on all legs ; apicals prominent on mid leg. Wings hyaline, tip pointed ; 

 veins brown, crossveins clear ; costa reaching M ; second costal break deep. R 2 +z nearly 

 straight, weakly sinuated ; i? 4+5 and M parallel. C-index about 1-3 ; 4V-index about 4-1 ; 

 4C-index about 27 ; 5x-index about 6-o ; Ac-index about 40. Ci -bristles two ; C3-fringe on 

 basal six-sevenths. Halteres greyish black. Abdominal tergites matt black, posterior margins 

 narrowly pale ; iT laterally pale. Abdominal sternites pale yellow. Egg-guide triangular, 

 dark brown, apically with a very long and two shorter setae. 



Holotype $. East Nepal ; Taplejung District, old mixed forest above Sangu, 

 c. 6,200', 25-28. x.1961 (R.L.C.), BMNH. 



Allied to M . purpurata Okada, 1956, (Japan) in having black mesonotal and meso- 

 pleural longitudinal stripes and triangular egg-guides, but differs from it principally 

 in having palpus and halteres black and pointed wings. 



Microdrosophila nigrohalterata sp. n. 



(Text-figs. 114-118) 



o\ ?• Body about 2-5 mm., dark yellowish brown. Head broader than thorax. Eyes dark 

 purplish red, somewhat quadrate, weakly sinuous at inner margin, pilose. Antennae thick, 

 second segment dark yellowish brown, with two long stout setae ; third rounded at tip, greyish 

 brown, with long pubescence. Arista with about five dorsal and three ventral long branches and 

 a moderate terminal fork. Palpus dark brown or black, slender, with a few stout spical setae. 

 Ocellar triangle highly convex, pale yellowish brown ; mouth-parts yellowish white. Periorbit 

 large, highly convex, glossy greyish brown, anteriorly broadened, reaching near the anterior 

 margin of front. Clypeus yellowish white. Front glossy greyish brown, highly convex, 



