DIPTERA FROM NEPAL 107 



dark brown longitudinal stripes, upper two anteriorly convergent and fused. Two numerals, 

 upper longer. Acrostichal hairs in six rows. Anterior dorsocentrals half as long as posteriors ; 

 distance between anterior and posterior dorsocentrals half distance between anterior pair. 

 Anterior scutellars divergent, posteriors missing. Sterno-index about 06 ; median sterno- 

 pleural as long as anteriors. Legs yellow ; all metatarsi subequal in length to the other seg- 

 ments together. Fore femur anteroventrally with a row of about ten short stout black spinules 

 on distal two-thirds. Preapicals on all legs ; apicals on mid leg. Wings hyaline, somewhat 

 fuscous along casta. C reaching M ; /? 2 +3 medially convex forward, gently curved to costa 

 apically ; /? 4+5 and M nearly parallel. C-index about 39 ; 4V-index about i-6 ; 4C-index 

 about 06; 5x-index about 1 -4 ; Ac-index about 21. C 1 -bristles two ; C3-fringe on basal half . 

 Halteres white. Abdominal tergites matt yellowish white, each with four large quadrate caudal 

 black patches, iT yellowish white. Abdominal sternites yellowish grey. 



Periphallic organs : Genital arch pale grey, pubescent and setigerous, anterior and posterior 

 margins nearly straight and parallel, ventrally rounded and darker. Clasper pale grey, nearly 

 quadrate, distal margin convex caudally on upper half and with a straight row of about eight 

 black teeth on lower half. Anal plate brown, oval, setigerous and pubescent, narrowly projected 

 caudoventrally, apically with about four stout black pointed bristles. Phallic organs : Aedeagus 

 yellowish orange, elliptical at lateral aspect, laterally flattened, ventro-anteriorly projected 

 roundly ; basal apodeme rod-like, half as long as aedeagus. Anterior paramere small, conical, 

 pubescent, attached to aedeagus basally, apically with a few sensilla. Ventral fragma quadrate, 

 pale grey ; hypandrial plate large, quadrate, pale grey ; median notch deep and broad. PI = 

 2-2. p.f. = aBCdEfg HIklmn. 



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

 stream in gully, c. 6,200', xi. 1961-L1962 (R.L.C.), BMNH. 



Peculiar among the immigrans-group in having black mesonotum, striped front, and 

 anal plate ventrally narrowly projected with stout apical bristles. D. (D.) annu- 

 lipes Duda, 1924 and D. (D). circumdata Duda, 1924, as well as the two succeeding 

 species in this paper, have also striped fronts, but their mesonota are similarly 

 striped, thus differing from the present species. 



Drosophila (Drosophila) notostriata sp. n. 



(Text-figs. 316-322) 



o". Body about 26 mm. Head slightly narrower than thorax. Eyes dark brownish red, 

 pilose. Antennae with second segment dark brown, especially anteriorly ; third yellowish 

 orange, anteriorly black. Arista with only two dorsal and one ventral branches and a large 

 terminal fork. Palpus yellowish brown, distally broadened, apically darker, with a few stout 

 ventral and an apical setae. Ocellar triangle black. Periorbit dull yellow, medially slightly 

 narrowing, anteriorly somewhat curved inward and blunt, about two-thirds as long as front. 

 Front yellowish orange, matt, with a pair of broad anteriorly convergent dark brown stripes, 

 anteriorly somewhat narrowing, as broad as length down middle, posteriorly slightly narrower 

 than half head width. Clypeus reddish brown, with a black median spot on buccal margin. 

 Face yellowish grey. Carina high, grey, relatively short. Cheeks yellowish brown, about one-fifth 

 as broad as the greatest diameter of eye. Occiput yellowish brown, laterally dark. Postverti- 

 cals relatively short. Anterior reclinate orbital one-third as long as posterior reclinate and of 

 proclinate, slightly nearer to proclinate than to posterior reclinate. Proclinate inside others. 

 Second oral about one-third as long as vibrissa ; succeeding orals shorter. 



Mesonotum dull yellow, matt, with six narrow brownish black longitudinal stripes, outermost 

 pair interrupted at sutures. Scutellum dull yellow, matt, with two broad brown longitudinal 

 stripes. Thoracic pleura brownish black, grey pollinose, paler at sutures. Two long humerals, 



