CULEX ABOMINATOR 379 



Description of Female, Male, and Labva of Culex abominatoe: 



Female. Proboscis rather long and slender, uniform, clothed with black 

 scales ; labellse long, conically tapered, dark ; setge minute, curved, black, those 

 on labellffi more prominently outstanding. Palpi stout, one-fifth as long as 

 proboscis, black scaled, setae rather coarse. Antennse moderate, joints subequal, 

 rugose, coarsely pilose, black ; tori subspherical with a cup-shaped apical exca- 

 vation luteous, brown on inner side; hairs of whorls sparse, moderate, black; 

 second joint scarcely enlarged, pale at base. Clypeus rounded triangular, promi- 

 nent, blackish pruinose. Eyes black. Occiput brown, clothed with yellowish- 

 white scales on vertex, narrow curved ones on median line, flat ones on sides ; 

 margin of eyes and lower part of sides white ; scattered erect, forked pale scales 

 on vertex ; a row of bristles along margin of eyes. 



Prothoracic lobes elliptical, remote dorsally, clothed with a few pale scales 

 and black bristles. Mesonotum brown, clothed with rather large, narrow, curved 

 dull golden scales, those around ante-scutellar space paler; setae rather long, 

 coarse, black. Scutellum trilobate, brown, with narrow pale golden scales, each 

 lobe with a tuft of black bristles. Postnotum elliptical, prominent, brown, nude. 

 Pleurae and coxae brown, with patches of elliptical white scales and rows of pale 

 bristles. 



Abdomen subcylindrical, depressed, truncate at tip ; vestiture black above Tvith 

 a faint-brownish luster, each segment except the first with a very narrow, trans- 

 verse, uniform basal band of dull-white scales, band on second segment produced 

 in middle ; bands expanded on sides to form large lateral triangular spots, visible 

 dorsally on sixth and seventh segments ; eighth segment dark scaled ; venter 

 black scaled, each segment with a rather broad white basal band ; hairs at apices 

 of segments rather coarse, pale ; tip densely bristly. 



Wings moderate, hyaline ; petiole of second marginal cell one-third as long as 

 its cell, that of second posterior cell much shorter than its cell ; basal cross-vein 

 distant more than its own length from anterior cross-vein ; scales of veins dense, 

 outstanding ones on second, third and fourth veins narrowly ovate, those on fifth 

 and sixth veins ligulate; scales bronzy brown, with a blue reflection on costa. 

 Halteres whitish with large black knobs. 



Legs moderate, vestiture black with a bronzy and bluish reflection, femora 

 whitish scaled beneath to tips ; knees and apices of tibiae narrowly white ; tibi^ 

 and tarsi black scaled with bronzy and blue luster. Claw formula, 0.0-0.0-0.0. 



Length: Body about 2.5 mm.; wing 2.5 mm. 



Male. Proboscis long, straight, slender, gradually and slightly enlarged to- 

 wards apex, entirely black scaled. Palpi long and slender, scarcely enlarged 

 towards apex, exceeding proboscis by nearly the length of the last two joints, 

 apex of long joint and the last two joints with sparse stiff black hairs; vestiture 

 bronzy black, long joint with a very narrow pale ring before middle. Antennae 

 plumose ; last two joints long and slender, rugose, pilose, black, the others mod- 

 erately short, whitish, with black rings at insertions of hair-whorls ; hairs long, 

 dense, black. Coloration similar to the female; vestiture of mesonotum some- 

 what paler. Abdomen depressed, gradually enlarged towards apex; dorsal 

 bands medianly produced on second and third segments ; lateral ciliation mod- 

 erately long, rather abundant, pale brown. Wings scarcely narrower than in 

 female, venation similar, vestiture also similar. Claw formula, 1.1-1.1-0.0. 



Length : Body about 3 mm. ; wing 2.5 mm. 



Genitalia (plate 10, fig. 69) : Side-pieces much enlarged, subspherical, ex- 

 cavated on inner side, as broad as long; inner process divided, outer part 

 columnar, bearing four rods with hooked tips and a large, distorted leaf -like ap- 

 pendage ; inner portion furcate, inner limb very short, each bearing a filament 



