CUIiEX STIGMATOSOMA 237 



cup-shaped apical excavation, yellowish, shading to black within, with a patch 

 of white scales on inner side ; hairs of whorls sparse, moderate, black. Clypeus 

 rounded triangular, prominent, with a slight median groove, dull black, nude. 

 Eyes black. Occiput black, clothed with narrow curved scales which are pale 

 brownish, ocular margin and sides white; many erect, serrate-tipped pale- 

 brownish scales on the nape. 



Prothoracie lobes elliptical, remote dorsally, blackish, clothed with narrow, 

 curved white and pale brown scales in the middle and many dark bristles. Meso- 

 notum blackish, clothed with narrow, curved bronzy-brown scales, some paler 

 scales along anterior margin; an obscure pale stripe stiarting behind the lateral 

 depression and running to posterior margin; ante-scutellar space edged with 

 white; bristles rather numerous, long, black. Scutellum trilobate, brown, 

 clothed with narrow, curved white scales, each lobe with a tuft of black bristles. 

 Postnotum elliptical, prominent, dark brown, nude. Pleurae and coxae pale 

 luteous, the pleurae with dark spots ; small patches of elliptical, flat white scales 

 and rows of small brown bristles. 



Abdomen subcylindrical, flattened, truncated posteriorly; dorsal vestiture 

 black, a yellowish-white band at base of each segment except the first, narrowing 

 at the side, joining a row of diffused white lateral patches ; venter white-scaled 

 with black scales intermixed, which form large, diffused, rounded, median sub- 

 apical patches. 



Wings ample, hyaline; petiole of second marginal cell nearly half as long as 

 its cell, that of second posterior cell nearly as long as its cell ; basal cross- vein 

 distant its own length from anterior cross- vein; scales brown, black on costa, 

 the outstanding ones dense, long, linear. Halteres whitish. 



Legs slender, long; femora black, white below nearly to tips; knees white; 

 tibiae black, with a few white scales on inner side and extreme base and tip 

 narrowly white ; tarsi black, each joint with a white band at base and tip ; front 

 and mid tarsi with the rings very narrow and present only on first and second 

 joints and base of third. Claw formula, 0.0-0.0-0.0. 



Length : Body about 4 mm. ; wing 4.5 mm. 



Male. — Proboscis straight, slightly longer than in the female. Palpi long and 

 slender, exceeding the proboscis by nearly the length of the last two joints, last 

 joint pointed, penultimate one slightly enlarged ; vestiture black, the long joint 

 with a pale ring before the middle, the others white at base above; beneath a 

 line of white scales along entire length of palpi ; apical third of the long joint 

 and last two joints with long, dense hairs. Antennae plumose, the last two joints 

 long and slender, rugose, pilose, black, the others short, pale, each with a narrow 

 black ring at insertion of the hair-whorl ; hairs long, fine and brown. Color- 

 ation similar to the female. Wings narrower than in the female, the vestiture 

 sparse. Abdomen elongate, depressed, parallel-sided; dorsal white bands 

 broader, that on seventh segment much produced at the sides ; lateral ciliation 

 long, fine and abundant, pale yellowish. Claw formula, 1.1-1.1-0.0. 



Length : Body about 4 mm. ; vring 3.5 mm. 



Genitalia (plate 15, fig. 107) : Side-pieces two and one-half times as long as 

 wide, tip conically tapered ; marginal filaments subapical at the end of a trun- 

 cate conical process consisting of three rods with bent tips, a small rod, a leaf- 

 like appendage, and a seta. Clasp-filament moderate, curved, slightly enlarged 

 at base, with an articulated terminal spine. Harpes furcate, the outer branch 

 long, curved, the inner conical, bearing a dense tuft of spines. Harpagones fur- 

 cate, one branch roundedly forked, the other divided into six irregular blunt 

 coarse teeth. 



Larva, Stage IV (plate 102, fig. 338). — Head rounded, widest through the 

 eyes ; antennae long and slender, a tuft at outer third, the part beyond it slender ; 



