208 
A Monograph of Culicidae. 
¥forof*kor& 
8. fulvus. Wiedemann. 
Culex Jlavicosta. Walker. 
(Ausseurop. Zweiflug. Ins. p. 546 (1828), Wiedemann; Ins. Saund. p. 481, 
Walker.) 
Thorax yellowish in front, darker behind, with yellow scales 
in front and dark behind ; abdomen with rather hairy yellowish- 
brown scales; legs yellowish, with dark brown A>asai bands to 
the hind tarsi; wings brown at the tip, yellow along the costa. 
9 . Head yellow, with narrow, hair-like, small yellow scales 
and small black and ochraceous forked ones behind; palpi 
clothed with yellow scales, black at the apex; clypeus yellow; 
antennae with basal joint and base of the second joint yellowish, 
rest dark brown. 
Thorax yellowish in front, clear yellowish-brown behind, 
with small hair-like curved scales in front and forming a line 
down the middle with narrow hair-like dark scales behind and 
with two rows of golden bristles; scutellum yellowish-brown, 
with fine hair-like black scales and golden-brown bristles; 
raetanotum chestnut-brown; pleurae brownish, with a broad 
dark line over the coxae. 
Abdomen entirely covered with bright ochraceous scales with 
a distinct lustre ; venter dusky yellow. 
Legs covered with yellowish scales, apices of the femora 
black ; in the hind legs the metatarsi and tarsi have broad 
-basal dark bands, which involve most of the joints on the last 
three tarsi; ungues small, equal, and >simple.u-n Herr. 
Wings with the costa, first long vein and sub costal yellow 
scaled, the apex of the wing densely brown scaled and the rest 
of the wing field slightly ornamented with brown scales; first 
sub-marginal cell a little longer and narrower than the second 
posterior, its base nearer the apex of the wing than that of the 
second posterior, its stem yellow scaled about two-thirds the 
length of the cell; stem of the second posterior about as long as 
its cell; supernumerary and mid cross-veins in one line ; posterior 
not quite its own length distant from the mid cross-vein; fringe 
rather bronzy. 
Halteres ochraceous brown. 
Length. —5 to 6 mm. 
Habitat. —Amazon Region (Walker); Brazil (Wiedemann); 
Tropical? (Bigot). 
