AEDES CANTATOK 701 



with narrow, curved bright bronzy brown scales, yellowish about the antescutel- 

 lar space, and a short stripe of light scales on either side of it. Scutellum trilo- 

 bate, luteous, clothed with yellowish scales, each lobe with a group of golden- 

 brown bristles. Postnotum elliptical, prominent, dark brown, nude. Pleurae 

 brown, coxae ocherous yellow, clothed with elliptical, flat, white scales in 

 patches and rows of pale bristles; epimera of prothorax clothed with bronzy 

 brown scales similar to those on mesonotum. 



Abdomen subeylindrical, flattened, the posterior segments tapering; vestiture 

 dull black, a broad ill-defined band of dull creamy white scales at base of each 

 segment, their apical margins very narrowly pale scaled, sixth segment with the 

 basal band very broad and laterally expanded, the last two segments almost 

 wholly whitish scaled above, a series of large, lateral, segmentary, basal, tri- 

 angular whitish patches joined to the basal bands, confluent on distal segments, 

 first segment white scaled and with many pale hairs ; venter clothed with dull 

 yellowish white scales, a medio-ventral row of elongate, indistinct black patches. 

 Cerci black. 



Wings moderate, hyaline ; petiole of second marginal cell much shorter than 

 its cell, that of second posterior cell about equal to its cell; basal cross- vein 

 slightly less than its own length distant from anterior cross- vein ; scales of the 

 veins brownish black, those on costa and first vein with blue reflection, the 

 outstanding one long and narrowly linear. Halteres entirely whitish. 



Legs moderately slender; femora with yellowish- white scales beneath and 

 mostly black ones above, extreme tips pale; tibiae with black and pale yellow 

 scales intermixed, a small pale spot at base ; tarsi black, each joint of hind ones 

 with a small yellowish-white basal ring; first tarsal joint of all legs with some 

 whitish scales on inner side ; last two joints of fore tarsi and last joint of mid 

 tarsi without pale rings. Claw formula, 1.1-1.1-0.0. 



Length : Body about 5 mm. ; wing 4.5 mm. 



Male. — Proboscis long and slender, straight. Palpi about as long as the pro- 

 boscis, the terminal joints slightly enlarged; vestiture brownish black, without 

 white ring at middle of long joint, some white scales at bases of last two; end 

 of long joint and last two joints with many dense black hairs. Antennae plu- 

 mose, the last two joints long and slender, rugose, pilose, black, the others short, 

 white, a broad black ring on the incrassated insertions of the hair-whorls ; hairs 

 of whorls long, dense, brown with yellowish luster. Coloration similar to the 

 female. Wings narrower than in the female, stems of the fork-cells longer ; ves- 

 titure sparse. Abdomen long, slender, depressed, the basal bands broader and 

 laterally prolonged, the last two segments mostly whitish scaled; lateral cilia- 

 tion long, abundant, pale yellow. Claw formula, 1.1-1.1-0.0. 



Length : Body about 5.5 mm. ; wing 4.5 mm. 



Genitalia (plate 27, fig. 184) : Side-pieces over twice as long as wide, slender, 

 curved, apical lobe prominent, rounded, continued along the side-piece to the 

 base ; basal lobe forming a rounded angle, bearing a stout spine and a group of 

 small setae. Clasp filament long and slender, slightly enlarged along middle 

 portion, with three small spines before the tip and a long terminal articulated 

 spine. Harpes flat, concave, inner margin thickened and revolute, tips tapered 

 to a point and bent outward. Harpagones with a long columnar base curved in 

 an arc, the terminal articulated filament broadly spatulate, slightly angled on 

 one side at the apical third. TJnci approximate, slender, revolute, forming a 

 rounded-tipped cylinder. Basal appendages small, with a few stout setae. 



Larva, Stage IV (see the figure of the entire larva, plate 67) . — Head rounded, 

 narrowed before the eyes, a slight notch at insertion of antennae, front margin 

 broadly arcuate. Antennae slender, subeylindrical, tapering a little, well spined 

 all over ; a small tuft a little before the middle ; four spines of different lengths 



