art. 1. MOSQUITOES OF THE UNITED STATES—DYAR. 21 
A medium-sized, blackish mosquito, the mesonotum dark brown 
with fine, narrow, blackish scales. Abdomen black above, with or 
without narrow segmental basal whitish bands, joining the lateral 
spots; venter whitish scaled, with diffuse black bands at the apices 
of the segments. Legs black, the femora whitish beneath, tips of 
tibiae white. Wing scales narrow, all dark. 
The scales on the mesonotum are very fine and hairlike, giving a 
velvety appearance. The tenth sternites of the male genitalia have 
a tuft of spines, the outer three or six of them stout and toothlike; 
mesosomal plate with two or more even teeth and a small one between 
the upper and lower limbs, the tooth from the base very long, with 
radial pecten between its base and the margin. 
The larvae live in permanent pools in swamps and holes in coral 
rock, usually without vegetation, sometimes occurring in clear wells. 
Distribution—Greater Antilles and southern Florida. The species 
is considered a race of the earlier described Culex nigripalpus Theo- 
bald, which inhabits the tropical mainland from Trinidad to Panama 
and Central America. 
United States Records. 
FrLoripA: Miami, October 29, 1921 (G. F. Moznette). 
Pokatee, March 19, 1905 (A. N. Caudell). 
Green Cove Springs, 1905 (A. N. Caudell). 
Jacksonville, March 4, 1905 (H. G. Dyar). 
Group TARSALIS. 
CULEX (CULEX) TARSALIS Coquillett. 
Culex tarsalis CoQuILLETT, Can. Ent., vol. 28, p. 43, 1896. 
Culex willistoni Gites, Handb. Gnats or Mosq., p. 281, 1900. 
Culex affinis ADAMS, Kans. Univ. Bull, vol. 20, p. 25, 1903. 
Culex kelloggii THEOBALD, Can. Ent., vol. 25, p. 211, 1903. 
Culex peus SPEISER, Insektenborse, vol. 21, p. 148, 1904. 
A medium-sized mosquito, the mesonotum bronzy-brown scaled, 
frequently ornamented with narrow silvery-white lines each side of 
the posterior portion, running back to the scutellum. The abdomen 
is blackish or brown, with moderate basal segmental white bands, 
the one on the basal segment triangular; venter whitish scaled, with 
angular transverse black bands, which form cusps directed pos- 
teriorly. Proboscis dark, with a white ring near the middle. Legs 
brown, the femora white beneath, the tarsi with white rings at both 
ends of the joints, small on front and middle legs, distinct on the hind 
pair, a white line on the outer side of femora and tibiae. Wing 
scales wholly dark, fine and hairlike, forming a little tuft at the 
base of the third vein. 
6 See Dyar, Ins. Ins. Mens., vol. 9, p. 28, 1921, for the synonymy. 
