DIPTERA FROM NEPAL 33 



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

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



Paratypes : 4 <£, same data as holotype ; 9 <$, 2 $, Taplejung District, between 

 Sangu and Tamrang, mixed shrubs in deep gorge, c. 5,200', x-xi.1961 ; 1 <$, Sangu, 

 mixed vegetation by stream in gully, c. 6,200', ix. 1961-1.1962 ; 1 <$, north of Sangu, 

 dry grass above river bank, c. 5,000', 5.1.1962 ; 1 $, Dobhan, evergreen trees over- 

 hanging stream in deep gully, c. 3,500', 30.1.1962 ; 2 $, between Sangu and Tamrang, 

 mixed plants by damp cliff in deep river gorge, c. 5,200', i-ii.1962 ; 1 <£, ibid., mossy 

 ground under bushes by hill stream, c. 5,500', 20.x. 1961 (R.L.C.), BMNH, 1 $ from 

 between Sangu and Tamrang, at the Tokyo Metropolitan University. 



Allied to L. albiceps de Meijere, 1914, (Java and Formosa) but differs in having 

 palpus black apically, 4-5T unspotted, and 3T silvery shining. 



Leucophenga rectinervis sp. n. 



(Text-figs. 81-85, 94) 



<J, $. Body about 3 mm. Head slightly broader than thorax. Eyes bright reddish brown ; 

 ocelli bright red. Antennae pale yellowish white, third segment relatively slender. Arista 

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

 pale yellowish white, slender, gently curved upward, rounded at tip, with a strong apical and a 

 few weaker ventral setae. Ocellar triangle black. Periorbit pale yellowish white, slightly 

 glossy, obscurely demarcated from front. Front flat, pale yellowish white, matt, parallel-sided, 

 anteriorly somewhat narrower than length down middle, posteriorly about one-third as broad as 

 head width. Face white, laterally concave. Clypeus pale yellowish white. Cheeks pale, 

 narrow, about one-twentieth as broad as the greatest diameter of eye. Occiput black. Pro- 

 clinate orbital slightly shorter than other orbitals ; anterior reclinate outside and just posterior 

 to proclinate. Only one prominent oral. 



Mesonotum yellowish brown, silver pollinose. Scutellum dark yellowish brown, matt, 

 apically white. Thoracic pleura pale yellowish grey, with an obscurely demarcated dark cloud 

 on pteropleuron. Humeral callus pale, with two numerals, lower shorter. Prescutellars long, 

 parallel with each other, slightly longer than anterior dorsocentral. Acrostichal hairs in about 

 ten irregular rows. Anterior dorsocentrals shorter than posteriors ; distance between 

 anterior and posterior dorsocentrals about one-third distance between anterior pair. Anterior 

 scutellars divergent ; posterior scutellars longer than anteriors and nearer to each other than to 

 anteriors. Sterno-index about o-6. Legs yellowish white ; all metatarsi much longer than the 

 other segments together. Preapicals on all legs ; apicals prominent on mid leg. Wing hyaline, 

 veins brown ; crossveins clear. R 2 + 3 nearly straight, not curved to costa at tip ; costa weak 

 beyond i? 4 + 5 ; i? 4 + 5 and M nearly parallel. Wing tip slightly pointed. C-index about 3-0 ; 

 4V-index about 2 o ; 4C-index about 1 o ; 5x-index about 1 -3 ; Ac-index about 2 o. Ci-bristles 

 two ; C3-fringe on basal two-thirds. Halteres white. Abdominal tergites yellowish white, 

 with black spots as follows : two small on 2T, three large on 4T, five large on 5T (median one 

 small and longitudinal), two on 6T. 3T largely black. Caudal sternites black. 



Periphallic organs : Genital arch black, broad, not narrowing above, pubescent and setigerous, 

 ventrocaudally obliquely truncate, heel low. Anal plate narrow, pale yellow, pubescent and 

 setigerous. Clasper large, black, oval, pubescent and with short setae. Phallic organs: 

 Aedeagus entirely bifid, black, medially somewhat broadened ; ventral recurved process pale 

 brown, long, blade-like, apically pointed. Anterior paramere pale, fusiform, with a longitudinal 

 row of a few sensilla on distal half. Posterior paramere pale yellow, contiguous with orange 

 hooked piece of aedeagus. PI = 00. p.f. = ABCDeFgHikLmN. 



