DIPTERA FROM NEPAL 109 



subequal. 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, as long as posteriors, which are somewhat nearer to anteriors than 

 to each other. Sterno-index about o-6 ; median sternopleural slender. Legs yellow ; fore 

 femur anteroventrally with a row of about ten stout black spinules on distal two-thirds, larger 

 and smaller teeth alternating. Preapicals and apicals on all legs. All metatarsi subequal in 

 length to the next three segments together. Wings hyaline, vein Cit and posterior crossvein 

 darker but not clouded, tip slightly pointed. R 2 +3 nearly straight ; B 4 + 5 and M slightly conver- 

 gent apically. C-index about 3-1 ; 4V-index about 1 -6 ; 4C-index about o-8 ; 5x-index about 

 1-5; Ac-index about 2-3. C 1 -bristles two ; C3-fringe on basal two-sevenths. Halteres yellow. 

 Abdominal tergites matt yellow, each with a medially widely interrupted, and laterally somewhat 

 broadened, posterior black transverse band, which is sometimes divided into four spots on 

 posterior tergites. 



Periphallic organs greyish brown. Genital arch tapering above, swollen subventrally, some- 

 what caudally curved apically, setigerous and pubescent, apically with several stout setae. 

 Clasper triangular, somewhat caudally projected on upper half, with a straight row of about six 

 stout black teeth along lower half of distal margin. Anal plate separated from genital arch as 

 usual, fusiform, setigerous and pubescent, with about thirty-five short stout black pointed 

 bristles in several rows ventro-apically. Phallic organs pale yellowish brown. Aedeagus 

 straight, pubescent, distally swollen and club-shaped, laterally angulated, with a few short conical 

 processes apically. Anterior paramere oval, half as long as aedeagus, with a few prominent 

 sensilla apically, basally attached to aedeagus. Posterior parameres apparently fused to form 

 a broad quadrate lobe. Ventral fragma quadrate ; hypandrial plate large and fusiform. 

 Apodeme of aedeagus slender, straight, as long as aedeagus. PI = 12. p.f. = ab'CdEfgHik 

 lmN. 



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

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



Allied to D. hexastriata Tan, Hsu, and Sheng, 1949 (China), but differs from it in 

 having dark longitudinal stripes on front, branches of arista much fewer, second oral 

 shorter, and acrostichal hairs in six rows (eight in hexastriata). The presence of a 

 "sinous bow" or "distal bow" of fused posterior parameres in this species suggests 

 a connection with the tripunctata-gx oup. Although some species of this group have 

 the row of spinules on fore femur, like the members of the immigrans-gvoup, this 

 resemblance was considered by Frota-Pessoa (1954 : 265) to be superficial, since the 

 latter group lacks the distal bow. 



Drosophila (Drosophila) pentastriata sp. n. 



(Text-figs. 192-195, p. 68, 219-220, p. 75) 



o*. Body about 2-4 mm., relatively slender. Head slightly broader than thorax. Eyes deep 

 red, thickly pilose. Antennae with second segment dark yellow ; third broader, oval, yellow 

 with anterior half black. Arista with about three dorsal and one ventral very long branches and 

 a very large terminal fork. Palpus and mouth-parts unfortunately missing. Ocellar triangle 

 black. Periorbit yellowish grey, somewhat glossy, somewhat narrowing anteriorly, four-fifths 

 as long as front. Front orange-yellow, with two broad dark brown anteriorly convergent 

 longitudinal stripes, proximal half of these diffusely dilated interiorly. Front anteriorly narrow- 

 ing and as broad as length down middle, posteriorly slightly narrower than half head width. 

 Clypeus yellow, medially with a narrow brownish transverse band. Face wide, greyish white, 

 parallel-sided, white along eye margin. Carina high, long, narrow, yellowish white. No frontal 

 hairs. Cheeks yellowish white, about two-sevenths as broad as the greatest diameter of eye. 



