72 T. OKADA 



Face yellowish grey. Carina yellowish grey, high, broad, long. Clypeus yellowish brown. 

 Cheek yellowish brown, very narrow, about one-fifteenth as broad as the greatest diameter of 

 eye. Occiput dark brownish black. Postverticals long, slightly shorter than inner verticals. 

 Anterior reclinate orbital short, just outside and shortly behind proclinate, one-third as long as 

 proclinate, one-fourth as long as posterior reclinate, thrice as distant from posterior reclinate as 

 from proclinate. Second oral half as long as vibrissae ; succeeding orals as long as second. 



Mesonotum dark brown, matt, humeral callus paler, along dorsocentral line pale. Scutellum 

 flat, dark brown, somewhat velvety, elongate. Thoracic pleura dark brown, paler below. Two 

 humerals, lower shorter. Prescutellars as long as anterior dorsocentrals. Acrostichal hairs in 

 six rows. Anterior dorsocentrals one-third as long as posteriors ; distance between anterior 

 and posterior dorsocentrals about half distance between anterior pair. Anterior scutellars 

 divergent, slightly longer than posteriors, which are nearer to each other than to anteriors. 

 Sterno-index about 0-7 ; median sternopleural as long as posteriors. Legs yellow, including 

 coxa. Preapicals on all legs ; apicals prominent on mid leg. All metatarsi much longer than 

 the other tarsal segments together. Wing very fuscous especially along costal margin, relatively 

 large ; veins dark ; crossveins not clouded but distinct. i? 2 + 3 nearly straight, not curved to 

 costa apically ; i? 4 + 5 and M slightly divergent ; costa reaching M. C-index about 4-5 ; 4"V-index 

 about 1-5 ; 4C-index about 0-5 ; 5x-index about 1-3 ; Ac-index about 1-4. Ci-bristles two ; 

 C3-fringe on basal one-third. Abdomen elongate ; abdominal tergites yellowish brown, each 

 with a caudal, medially contiguous, latero-anteriorly curved, black cross-band. Abdominal 

 sternites pale yellow. 



Periphallic organs : Genital arch pale brownish black, densely pubescent and setigerous, 

 dorsally not distinctly narrowing, ventral half broader, apically sharply truncate. Clasper pale 

 brownish black, hemispherical, not extending below genital arch, outer margin with about 

 thirteen strong black pointed teeth in a slightly concave row, occupying entire length of outer 

 margin. Anal plate small, elliptical, separated from genital arch, setigerous and pubescent, 

 ventrally obtusely pointed. Phallic organs : Aedeagus bifid, black, crescentic in lateral aspect ; 

 basal apodeme one and a half times as long as aedeagus, brownish black, straight. Anterior 

 paramere small, slender, pale yellowish brown, pubescent, attached to hypandrium. Posterior 

 parameres (?) fused to form a large pale brown flat oval process, finely serrated along distal margin. 

 Hypandrium brown, large, triangular, distally narrowly pointed and with a stout long submedian 

 spine. Ventral fragma quadrate, anterolateral corners shortly projected forward, with deep 

 median notch. PI = 0-5. p.f. = ABCdefgHIkLMN. Egg-guide elongate elliptical, swollen 

 dorsally, pale yellowish brown, distally and ventrally darker, apically narrowly rounded, with 

 about twenty two marginal and two apical discal pointed brown teeth, upper two teeth being 

 very long, and with a subterminal hair near apex. Basal isthmus very short and pale. 



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

 in deep river gorge, c. 5,200', 22.xi.1961, 2 $, 1 $ ; between Sangu and Tamrang, 

 mixed shrubs in deep gorge, c. 5,200', 1 $, 1 $, x-xi.1961, (R.L.C.). 



Distribution : Nepal (new locality) , Formosa. 



Drosophila (Scaptodrosophila) alternata de Meijere subgen. comb. n. 



(Text-figs. 196-200) 



Drosophila alternata de Meijere, 191 1 : 402 (Java). 



Drosophila (Paradrosophila) alternata (de Meijere) Duda, 1924a : 207 (Java) ; Duda ; 1931 : 194 



(Sumatra) ; Mayer, 1935 : 467 (Sumatra). 



ct. Body about 2 mm. Head as broad as thorax. Eyes dark red, large, finely pilose. 

 Antennae with second segment orange-brown, conical ; third greyish black, basally orange- 

 brown, oblong, twice as long as broad. Arista with about four dorsal and two ventral branches 

 and a small fork. Palpus yellowish brown, with a few setae. Ocellar triangle medially black, 



