5 o T. OKADA 



caudal tip somewhat elongated below. Clasper elliptical, with about three rows of black teeth 

 along outer margin. Decasternum orange, small, oval. Phallic organs : Aedeagus black, 

 medially paler, rhombic in ventral aspect, basally with a pair of short triangular vertical rods ; 

 apodeme slender, black, nearly twice as long as aedeagus. Anterior paramere fused to hypan- 

 drium, without prominent sensilla. Hypandrial plate crescentic, brown, inferiorly with a stout 

 short submedian spine. Ventral fragma large, ovoid, dark brown. Ejaculatory apodeme with 

 black stalk and dark brown triangular plate. PI = o-8. p.f. = aBCdef g HIklmN. Egg- 

 guide lobe pale orange, triangularly pointed apically, basally tapering and black, with about 

 eighteen marginal and five discal orange teeth, subapically with a rather stout yellow hair 

 above and below. Basal isthmus short, black. 



Holotype <$. East Nepal : Taplejung District, below Sangu, by stream in 

 shady ravine, c. 6,000', 30.x. 1961 (R.L.C.), BMNH. 



Allotype $. Same data as holotype {R.L.C.), BMNH. 



Paratypes : 2 $, same data as holotype ; 1 $, Taplejung District, Sangu, mixed 

 vegetation by stream in gully, c. 6,200', xi.1961-i.1962 (R.L.C.), BMNH (2 $), and 

 the Tokyo Metropolitan University (1 $, from Sangu). 



Easily distinguished from other members of the genus Liodrosophila in having two 

 large black markings on wings, front and mesonotum granulose. 



Liodrosophila onchopyga sp. n. 



(Text-figs. I34- I 39) 



o", $. Body about 1-0-1-5 mm., glossy black. Head broader than thorax. Eyes dark red, 

 very sparsely pubescent. Antennae with second segment dark orange, third narrower, dark 

 yellow, anteriorly and apically black. Arista with about four dorsal and two ventral long 

 branches and a large terminal fork. Palpus black, with a fine long terminal seta and a few short 

 ventral setae. Ocellar triangle glossy brownish black, convex. Periorbit glossy brownish black, 

 convex, anteriorly narrowing, four-fifths as long as front. Front flat, glossy brownish black, 

 shining blue, anterior one-fourth sometimes orange-brown, anteriorly one-third broader than 

 length down middle ; posteriorly two-thirds as broad as head width. Face yellowish grey, 

 concave. Carina high, narrow, yellowish grey, half as long as face. Clypeus black. Cheek 

 yellowish grey, anterior corner black, one-sixth as broad as the greatest diameter of eye. Occiput 

 black. Postverticals minute, upright. Anterior reclinate orbital minute, outside and slightly 

 behind proclinate, a little nearer to posterior reclinate than to proclinate ; proclinate slightly 

 shorter than posterior reclinate. Two well developed orals, second a little shorter than vibrissa. 



Mesonotum black, glossy, slightly bluish, with fine punctures, without pubescence. Scutellum 

 velvety black, tip grey pollinose. Thoracic pleura greyish brown, glossy. Three long humerals, 

 uppermost one somewhat shorter than others. Acrostichal hairs in two rows. Anterior 

 dorsocentrals about half as long as posteriors ; distance between anterior and posterior dorso- 

 centrals half distance between anterior pair. Anterior scutellars nearly parallel, less than half 

 as long as posteriors ; posteriors longer than scutellum, slightly more distant from each other 

 than from anteriors. Legs yellow ; mid and hind metatarsi longer than next three segments 

 together, front metatarsi slightly shorter than next three segments together. Preapicals promin- 

 ent on hind leg ; apicals on mid leg. Wing hyaline, crossveins clear ; i? 2 +3 gently curved to 

 costa apically ; i? 4 + 5 and M somewhat convergent apically. C-index about 1 -6 ; 4V-index about 

 2-0 ; 4C-index about 1-5 ; 5x-index about 1-7 ; Ac-index about 3-2. Ci-bristle one, short ; 



