28 T. OKADA 



o-6. Legs yellow ; knees not absolutely black ; front metatarsi slightly longer than the other 

 segments together, mid and hind metatarsi much longer than the other segments together. 

 Preapicals on mid and hind legs, apicals prominent on mid leg. Wing slightly fuscous especially 

 on anterior half, with black patch below R 1 ; crossveins slightly clouded. C-index about 2-4 ; 

 4"V-index about 12; 4C-index about 09 ; 5x-index about i-6 ; Ac-index about 2-1. Ci- 

 bristles two ; C3-fringe on basal three-fourths. Halteres whitish yellow, not fuscous. Abdom- 

 inal tergites black ; iT yellow, 2T anteromedially yellow, 3T yellow on anterolateral margin. 

 Abdominal sternites pale yellow. 



Periphallic organs : Genital arch black, broad, ventrally broader and truncate, pubescent and 

 caudally with setae ; toe triangularly pointed caudally ; heel low, rectangular. Clasper oval 

 pale brown, darker anteriorly, setigerous and pubescent. Anal plate fusiform, pale brown, 

 setigerous but without microtrichia, ventral tip black. Phallic organs : Aedeagus pale brown, 

 slender, bifid on distal two-thirds ; ventral recurved process slender, nearly as long as aedeagus ; 

 apical hooked piece yellowish orange. Anterior paramere elongate, blade-like, pale yellowish 

 brown, medially with a few sensilla. Posterior parameres dark brown, fused to be a quadrate 

 lobe. Ventral fragma with distinct submedian spines. PI = 00. p.f. = ABCDeFgHIkLmN. 



Taplejung District, Sangu, mixed vegetation by stream in gully, c. 6,200', ix-x- 

 1961, 1 $ ; between Sangu and Tamrang, shrubs by path, c. 5,800', 6.XL1961, 3 <J ; 

 ibid., mixed shrubs in deep gorge, c. 5,200', x-xi.1961, 19 <$, 3 $ ; ibid., mixed plants 

 by damp cliff in deep river gorge, c. 5,200', 22.xi.1961, 3 <$, 1 $. Arun Valley, below 

 Tumlingtar, River Sabhaya, west shore, evergreen shrubs on sandy shore, c. 1,800', 

 9-17.xii.1961, ig, 1 $. (R.L.C.). 



Distribution : Nepal (new locality), Java, Africa. 



Differs from the original form (Java, de Meijere, 1914) in having pale yellow 

 halteres (fuscous in original form) and much smaller 4.V-index (2.3 in original form). 

 Occurrence of submedian spines on ventral fragma of phallic organ seems to be unique 

 among the genus Leucophenga, although it is prevalent in the subfamily Drosophi- 

 linae. 



Leucophenga nigripalpis Duda 

 (Text-figs. 62-66) 

 Leucophenga nigripalpis Duda, 1924a : 188 (Formosa). 



5*. Body about 2 mm. Head as broad as thorax. Eyes reddish brown, large, bare. Anten- 

 nae with second segment pale yellowish brown, third greyish yellow. Arista with about five to 

 six dorsal and two to three ventral branches and a moderate terminal fork. Palpus black, 

 slender, with an apical and a few ventral long black setae. Ocellar triangle black within the 

 bright red ocelli. Periorbit greyish yellow, short, medially constricted. Front pale yellowish 

 grey, somewhat glossy, flat, parallel-sided, anteriorly yellowish white and two-thirds as broad 

 as length down middle, posteriorly slightly narrower than one-third head width. Face flat, 

 yellowish white ; buccal margin slightly convex. Cheek white, narrow, about one-fifteenth as 

 broad as the greatest diameter of eye. Orbitals subequal in size ; anterior reclinate orbital 

 just outside and behind proclinate, four times as distant from posterior reclinate as from proclin- 

 ate. Postverticals small. Vibrissae rather short, second oral much shorter than vibrissa. 

 Clypeus pale brown. 



Mesonotum pale yellowish orange, laterally and caudally fuscous. Scutellum yellowish brown, 

 anterolaterally fuscous. Thoracic pleura pale yellowish orange, without dark patches. Two 

 humerals. Prescutellar longer than anterior dorsocentral. Acrostichal hairs in about ten 

 irregular rows. Anterior dorsocentrals short, about two thirds length of posteriors ; distance 



