REPORT OX MOSQUITOES. 333 



Description of the Adult. 



This is a small mosquito, the body measuring 3.5-4 mm.,^ 

 .14-16 of an inch in length and the beak just about half the 

 length of the body. The head is covered with creamy yellow 

 scales ; in the female there are two large patches of brown scales 

 in the central part of the occiput converging anteriorly; in the 

 male these patches are much reduced and widely separated. The 

 proboscis is black without bands or rings. The palpi in the 

 female (fig. 104, 2) are short, set with moderately long bristles, 

 three jointed, the second joint longer than the first, and the 

 terminal joint very small, though longer than broad and pointed 

 at the apex. In the male the palpi (fig. 104, 3) are about three- 

 fourths the length of those of the female, three jointed, the 

 second joint shorter than the first, the terminal joint minute and 

 circular in outline, first and second joints set with a few bristles 

 toward the apex. The antennae are dark brown in the female, 

 with the three basal joints pale yellowish; the male antennae are 

 banded brown and white, the first joint very large, the second 

 swollen, and the plumes brownish. 



The thorax is evenly reddish brown, sometimes with one or 

 more faint blackish lines down the center and the pleura are pale 

 brown with small irregular patches of dirty white scales. The 

 legs are wholly black, except the femora, which are creamy 

 white beneath and with a very small white dot at the knee. The 

 claws of the male anterior and mid tarsal joints (fig. 104, 4 and 5) 

 are unequal in size, the larger with a long, blunt median tooth, 

 the smaller simple. The male posterior claws (fig. 104, 6) and 

 all those of the female are ecjual, rather slender and with a single 

 median tooth near the base. The clothing and venation of the 

 wings are similar to those of Culex, but the lateral scales are 

 long and slender. 



The abdomen is black, above, with narrow cteamy basal 

 bands; in the female these bands are wide in the center, becom- 

 ing narrow toward the sides, save in the seventh segment, which 

 usually has a narrow band, broad at the sides. In the male the 

 bands are always wide, broadest at the extreme sides, often 

 forming a lateral margin to the apical segments. Sometimes 

 the basal bands are wholly obsolete, but this occurs in the females 

 only. The venter is thickly clothed with pale yellow scales. 



Habits of the Adult. 



Practically nothing is known of the adult in nature. Although 

 it has been 1)red from a number of widely separated localities be- 



