96 T. OKADA 



No specimens were found in the present collection. The author (1955) recorded it 

 from Central Nepal. 



Distribution : Nepal, India, Borneo, Formosa, Ryukyu, Japan (Amami Is.). 



Subgenus DROSOPHILA Fallen 

 Drosophila Fallen, 1823 : 4. 



Type-species : Musca funebris Fabricius, 1787 : 345. 



Key to Species 



1 Body and legs dark brownish black. $ anal plate contiguous with genital arch 



virilis section, robusta group . . lacertosa (p. 97) 



- Body and legs usually yellowish or yellowish brown, if dark brown, fore femur with a 



row of spinules. <J anal plate separated from genital arch quinaria section 2 



2 Fore femur antero-ventrally with a longitudinal row of short stout spinules 



immigrans group 7 



- Fore femur antero-ventrally without a row of spinules ..... 3 



3 Second oral as long as or only slightly shorter than vibrissa. Palpus with a few 



prominent ventral setae .......... 4 



- Second oral small or minute, at most half as long as vibrissa. Palpus with only one 



long apical seta ...... grandis group 5 



4 Two long sternopleurals. Posterior parameres fused to form a large distal bow 



bizonata group . trizonata (p. 97) 



- Three long sternopleurals. Posterior parameres apparently absent 



histrio group, part . . trisetosa (p. 99) 



5 Mesonotum with six dark longitudinal stripes .... editinares (p. 103) 



- Mesonotum without distinct dark longitudinal stripes ..... 9 



6 Thoracic pleura with three distinct dark longitudinal stripes . acutissima (p. 101) 



- Thoracic pleura without distinct dark longitudinal stripes, with only one faint small 



dark patch above ........ flexicauda (p. 101) 



7 Front and thoracic pleura with distinct dark longitudinal stripes ... 8 



- Front and thoracic pleura without distinct dark longitudinal stripes . . . 11 



8 Mesonotum and scutellum brownish black ; humeral callus and lateral sides of 



scutellum yellow. Wing slightly fuscous along costa . cubicivittata (p. 105) 



- Mesonotum and scutellum pale yellowish brown, with dark longitudinal stripes . 9 



9 Mesonotum with six dark longitudinal stripes. Scutellum with two dark longitudi- 



nal stripes. Arista with only five branches including a ventral branch and a 

 terminal fork ........ notostriata (p. 107) 



- Mesonotum with five or seven dark longitudinal stripes. Scutellum with or without 



distinct dark longitudinal stripes ......... 10 



10 Mesonotum with seven dark longitudinal stripes. Scutellum with two dark longi- 



tudinal stripes. Legs with dark ring ..... annulipes (p. no) 



- Mesonotum with five dark longitudinal stripes. Scutellum without distinct dark 



longitudinal stripes. Legs without dark ring . . . pentastriata (p. 109) 



11 Wing intensively clouded along costa. Posterior half of mesonotum and scutellum 



largely brownish black. Femora largely black . . fuscicostata (p. in) 



- Wing without dark clouds along costa. Mesonotum uniformly yellowish brown or 



yellowish orange. Femora yellow . . . . . . . . 12 



12 Tips of longitudinal veins i? 2+3 , -^4+5 an d M black. $ front not silvery shining. 



ct fore metatarsi thick and with a tuft of long hairs . . immigrans (p. 112) 



- Tips of longitudinal veins not black. <$ front silvery shining. $ fore metatarsi not 



thick and without a tuft of long hairs ...... nasuta (p. 112) 



