REPORT ON MOSQUITOES. 233 



Description of the Adult. 



This is a large mosquito, 7 mm., or a little over one-quarter of 

 an inch in length, exclusive of the beak. The beak is 3>^ mm., 

 long or one-half the length of the body. Across the wings it 

 measures 11 mm., or .44 of an inch. The head is yellowish 

 brown, the sides and part of the top are taken up by the large 

 black eyes; the beak is dark brown, almost black, without mark- 

 ings of any kind, the palpi in the female (figs. 69, 2) short, dark 

 brown, four- jointed, clothed partly with scales and set with 

 moderately long hairs, the apical joint small, knob-like and re- 

 tracted. The male palpi (fig. 41, 6) are long, three-jointed, 

 brownish black, paler at the base, without markings, thickly scaled 

 and with fan-like tufts of hair toward the tip. 



The antenna of the male is plumose, half as long as the palpi 

 and brown in color, all the joints cup-shaped with a circle of long 

 hair, except the two terminal ones; these long and slender, cov- 

 ered with short hair, and the base of the apical joint with six long 

 hairs. The antenna of the female is longer, very slender, but 

 with approximately the same number of joints, set with hair of 

 irregular lengths and a circle of six long, bristle-like hairs at the 

 base. 



The thorax is reddish brown, clothed with short, upright, 

 golden-yellow hairs. The legs are brown, femur paler, almost 

 white, beneath with the knees white. The tarsi are blackish, all 

 narrowly white-ringed at the base, the rings not well defined, 

 merging into the black and becoming almost obsolete toward the 

 tip on all feet. 



In the male the anterior claw-joint (fig. 69, 4) is inwardly 

 excavated and set with spines and bristles. The outer claw is 

 smaller than the inner, but both have a single tooth in the mid- 

 dle, slightly nearer the base. The claw-joint of the mid tarsi is 

 only slightly excavated and with claws the same as those of the 

 anterior tarsi (fig. 69, 5). The posterior claw-joint is normal, 

 very small, and with simple claws of the same size. 



In the female the anterior and mid claw-joints are alike, with a 

 single tooth on each of the claws. The posterior joint is of the 

 same size but the claws are simple, as in the male. 



The abdomen is dark brownish black, with yellowish white 

 bands at the base of each segment, considerably narrowed cen- 

 trally. The bands become wide laterally, more noticeable pos- 

 teriorly, and at segment seven broaden to such an extent so as to 

 entirely cover the dorsal surface. Beneath, the entire surface is 

 pale yellow. 



