DIPTERA FROM NEPAL 



17 



Mesonotum and scutellum dark brownish black, somewhat glossy. Scutellum triangular, 

 somewhat pollinose. Thoracic pleura white, with a broad black longitudinal stripe above. 

 One prominent humeral. Humeral callus somewhat pale. Acrostichal hairs in about ten 

 irregular rows. Anterior dorsocentrals apparently absent. Anterior scutellars long, divergent ; 

 posteriors half as long as anteriors, much nearer to each other than to anteriors. Sterno-index 

 about o-8. Legs greyish white ; knees dark brown ; fore and hind femora brown apically, 

 mid femur dark on distal half ; mid and hind tibiae proximally dark. Front metatarsus as long 

 as three succeeding tarsal segments together, subequal to the rest of tarsal joints in mid and hind 

 legs. Wing brown, anteriorly darker. R 2 + 3 strongly convex ; i? 4+5 and M strongly convergent 

 apically. Crossveins clouded, posterior crossvein somewhat sinuated. Cu distally curved 

 downward. C-index about 1 -8 ; 4V-index about 19 ; 4C-index about 1-3 ; 5x-index about 

 i-8 ; Ac-index about 200. Ci-bristle one, short ; C3-fringe on basal five-sixths. Abdominal 

 tergites dark brownish black, darker than mesonotum. 



Taplejung District, between Sangu and Tamrang, mixed plants by damp cliff in 

 deep river gorge, c. 5,200', 22. xi. 1961, 1$ (R.L.C.). 



Distribution : Nepal (new locality), Java, Sumatra, Formosa, S. Africa. 



LEUCOPHENGA Mik 



Leucophenga Mik, 1886 : 317. 



Type-species: Drosophila maculata Dufour, 1839 : 5° (Europe). 



In homologizing components of the phallic organs of this genus, the author (1956) 

 made some wrong interpretations, which are now amended. The main part of 

 aedeagus (misidentified as the main part of posterior paramere) is elongate, usually 

 partially bifurcated longitudinally, and distally with a hooked piece, which is 

 contiguous with the posterior parameres, and proximally with a stout ventral 

 recurved process (u, misidentified as the main part of aedeagus) (cf. pp. 1 21-122). 



Key to Species 



1 M distally abbreviated, not reaching wing margin 



- M distally not abbreviated, reaching wing margin 



2 Wing with more or less distinct dark markings . 



- Wing clear, without distinct dark markings 



3 Wing markings distinctly demarcated 



- Wing markings diffuse ...... 



4 Wing markings along costa and interrupted near middle 



- Wing markings along costa and on the crossveins 



5 Wing markings along costa and below R x 



- Wing markings only below R l . 



6 Third abdominal tergite very short . 



- Third abdominal tergite normal 



7 Scutellum laterally black, apically white 



- Scutellum dark brown, unicolorous . 



8 Halteres with black knob 



- Halteres yellow or white . 



9 Mesonotum and scutellum white, silver pollinose 



- Mesonotum yellowish brown, scutellum dark brownish black 



10 Thoracic pleura without black patches 



- Thoracic pleura with black longitudinal stripe . 



1 1 Thoracic pleura yellow, without dark patches or stripes 



abbreviata (p. 



18) 

 2 

 3 







6 





4 





5 



interrupta (p. 



21) 



ornata (p. 



21) 



costata (p. 



19) 



subpollinosa (p. 



21) 





7 



leu co zona ($) (p. 21) 



albifascia {$) (p. 22) 



9 



11 



argentata (p. 24) 



and apically white . 10 



halteropunctata (p. 25) 



leucozona (?) (p. 21) 



12 



