66 T. OKADA 



medially broadened. Anterior paramere bind, black, slender, basally recurved ventrocaudally 

 and attached to hypandrium. Posterior parameres fused to form a large dorsally folded quad- 

 rate flap. Ventral fragma quadrate, finely pubescent medially, and distally with a pair of short 

 submedian processes. PI = 0-3. p.f. = aBCdEf gHiKLmN. Egg-guide lobe brown, dist- 

 ally orange, fusiform, apically pointed, with about fifteen sharply pointed black marginal teeth, 

 apical tooth largest, and with a prominent pale subterminal hair. Basal isthmus thick, black, 

 half as long as lobe. 



Holotype <J. East Nepal : Taplejung District, river banks below Tamrang 

 Bridge, c. 5,500', x-xi.1961 {R.L.C.), BMNH. 



Allotype ?. Same data as holotype (R.L.C.), BMNH. 



Paratypes : 6 $, 3 $, 1 ex. (abdomen missing), same data as holotype ; 1 $, 

 Taplejung District, below Sangu, mixed vegetation on sheltered slopes above river, 

 c. 4,000', 3.1.1962 (R.L.C.), BMNH, 1 <$ and 1 $ (below Tamrang Bridge) deposited 

 at the Tokyo Metropolitan University. 



Small body size, minute postverticals, non-carinate face and relatively short 

 anterior reclinate orbital are the features characteristic of the Neotropical genus, 

 Diathoneura Duda. Differing from the American species of the genus, however, the 

 present species has eyes with thick pilosity. Frota-Pessoa (1947) treats this genus 

 as a synonym of Clastopteromyia Malloch, 1924 (in Malloch and McAfee, Proc. Biol. 

 Soc. Wash. 37 : 27), but Wheeler (1952) considers them to be distinct genera. 



DROSOPHILA Fallen 

 Drosophila Fallen, 1823 : 4. 



Type-species : Musca funebris Fabricius, 1787 : 345 (Sweden). 



Key to Subgenera 



1 Preapicals prominent only on hind tibiae ........ 2 



- Preapicals prominent on all three tibiae ........ 3 



2 The longest axis of eye nearly rectangular to body axis, o* with submedian spines of 



novasternum short and usually paired. Egg-guide teeth usually yellowish brown 



HIRTODROSOPHILA Duda (p. 77) 



- The longest axis of eye considerably oblique to body axis. $ novasternum with 



submedian spines rather long and in two pairs. Egg-guide teeth black 



DORSILOPHA Sturtevant (p. 81) 



3 Prescutellars present. $ with submedian spines of novasternum exceedingly long and 



stout. Egg-guide teeth yellowish brown SCAPTODROSOPHILA Duda (p. 67) 



- Prescutellars absent, o* with submedian spines of novasternum usually short and 



weak or frequently absent .......... 4 



4 The longest axis of eye very oblique to the body axis. Ocellars inserted well outside 



ocellar triangle. Clasper teeth and egg-guide teeth relatively large in size and few 



in number DICHAETOPHORA Duda (p. 73) 



- The longest axis of eye nearly rectangular to the body axis. Ocellars inserted inside 



ocellar triangle. Clasper teeth and egg-guide teeth relatively small in size and 

 large in number ............ 5 



5 Abdominal tergites with medially contiguous black cross-bands. Egg-guide teeth 



usually black SOPHOPHORA Sturtevant (p. 81) 



- Abdominal tergites usually with medially interrupted black cross-bands or spots. 



Egg-guide teeth usually yellowish brown DROSOPHILA Falleri, s. str. (p. 96) 



