DIPTERA FROM NEPAL 43 



yellowish brown, large, globular ; third as long as second, much narrower and paler. Arista 

 with about seven dorsal and three ventral very long branches and a small terminal fork. Palpus 

 orange-yellow, small, apically rounded and with a stout black and a few thinner ventral setae. 

 Ocellar triangle medially black. Frontal triangle large, convex. Periorbit large, convex, 

 anteriorly much broadened, pale yellowish grey, somewhat glossy, reaching anterior margin of 

 front. Front pale yellowish grey, somewhat glossy, anteriorly two-thirds as broad as length 

 down middle, posteriorly slightly more than half as broad as head width. Face pale yellow, 

 laterally concave. Carina high, long, pale yellowish white, wider below, reaching near buccal 

 margin. Clypeus pale yellow. Cheeks narrow below, yellowish white, about one-fifth as broad 

 as the greatest diameter of eye. Occiput pale yellow. Anterior reclinate orbital minute, just 

 behind proclinate ; proclinate about two-thirds as long as posterior reclinate, before and out- 

 side posterior reclinate. Only one long stout oral, others fine. 



Mesonotum yellowish brown, caudomedially and caudolaterally with indistinct dark brown 

 patches. Scutellum yellowish brown, slightly darker medially. Thoracic pleura pale yellowish 

 white, diffuse dark brown above. Only one stout humeral. Acrostichal hairs in six somewhat 

 irregular rows. Anterior dorsocentrals at the level of suture ; distance between anterior pair 

 of dorsocentrals about four-fifths distance between anterior and posterior pairs. Anterior 

 scutellars small, parallel, less than half as long as posteriors, which are divergent. Sterno-index 

 about 0-5. Legs yellowish grey ; all metatarsi subequal to the next three segments together. 

 Preapicals on all legs ; apicals prominent on mid leg. Wings hyaline, pointed at tip (slightly 

 below end of R i+& ) ; crossveins clear. R t + 3 gently curved to casta at tip ; i? 4 + 5 and M slightly 

 divergent. C-index about 1-7 ; 4V-index about 5-0 ; 4C-index about 3-0 ; 5x-index about 

 53 ; Ac-index about 30. Ci -bristles two ; C3-fringe on basal five-sixths. Halteres yellow. 

 Abdominal tergites yellowish grey, laterally and caudally dark brown. Abdominal sternites 

 pale. 



Periphallic organs : Genital arch pale yellow, broad, fusiform, pubescent, abruptly narrowing 

 above, ventroanteriorly pointed downward, caudoventral margin setigerous. Anal plate pale 

 yellow, oblong, setigerous, lower tip rounded. Clasper apparently absent. Phallic organs : 

 Aedeagus large, pale orange-brown, fusiform in lateral view, with a narrow anterior projection 

 subbasally, basal half rod-shaped, contiguous with a large distally truncate ventral recurved 

 process, which is nearly half as long as aedeagus. Apodeme of aedeagus short, rod-like. PI = 

 60. Anterior paramere elongate, pale yellow, proximally narrowing, subapically with a row 

 of a few sensilla. Posterior parameres fused to each other and to ventral fragma. Ventral 

 fragma like a narrow bow. p.f. = aBCdeFgHikLmn. Egg-guide pale yellowish brown, short, 

 triangular, apically pointed, with a long apical and two shorter submedian stout setae and 

 a fine subapical hair. 



Holotype <$. East Nepal : Taplejung District, Dobhan, small pockets of plants 

 on arid slopes above River Maewa, c. 3,500', 2. i. 1962 (R.L.C.), BMNH. 



Allotype $. Taplejung District, Sangu, mixed vegetation by stream in gully, 

 c. 6,200', xi. 1961-1.1962 (R.L.C.), BMNH. 



Paratype : 1 <J, same data as allotype, BMNH. 



Resembles M. maculata Okada, i960, (Japan) in having dark second antennal 

 segment, yellowish abdomen laterally dark, pale palpus, and large fusiform aedeagus, 

 but differs from it in having pointed wings, entirely black ocellar triangle, entirely 

 yellow halteres (knob darker in maculata), and triangular egg-guide (quadrate in 



maculata). 



