Carpenter et al.: Mosquitoes of Southern U. S. 199 



liberally speckled with pale scales; inner surfaces pale. Hind tarsal segments 

 each broadly white-banded at base (the white markings of segment 1 quite 

 variable, ranging from a rather narrow basal band to one occupying most of 

 the segment) ; fore-and mid-tarsi with segments 4 and 5 entirely dark; basal 

 white bands of other segments narrower than the corresponding ones of hind 

 tarsus. Wing: Scales narrow, dark, sprinkled with a few pale ones, especially 

 on costa and subcosta. 



ADULT male. — Coloration similar to that of female. TERMINAlia. The 

 terminalia appears to be identical with that of A. sollicitans (Fig. 107C). 



larva. (Fig. 106). — Head much broader than long. Antenna less than 

 half the length of the head, nearly smooth; antennal tuft 1 to 3-branched, 

 smooth, inserted near middle of shaft, extending nearly to tip. Head hairs: 

 Preantennal (A) multiple, smooth or very finely barbed, extending beyond 

 insertion of antennal tuft; lower (B) and upper (C) single, smooth or weakly 

 barbed, usually a little longer than antennae; postclypeal (d) small, single or 

 branched; sutiiral (e) trans-siitural (f) and supraorbital small, usually single. 

 Upper lateral abdominal hairs usually 2 to 3-branched on segments I to V. 

 Comb of eighth segment of about 6 to 12 scales in either an uneven single row 

 or an irregular triangular patch; individual comb scale thorn-shaped, with 

 minute spinules on basal portion. Siphon two to two and one-half times as long 

 as wide; pecten of numerous teeth extending to or slightly beyond apical third 

 of siphon, with about 2 to 4 of the distal teeth widely spaced; subventral tuft 

 small (much shorter than width of siphon), smooth, 3 to 5-branched, inserted 

 beyond pecten at apical fourth of siphon; dorsal preapical spine about as long 

 as apical pecten tooth. Anal segment a little wider than long, ringed by the 

 dorsal plate; lateral hair short, single; dorsal brush consisting of a long lower 

 caudal hair and a shorter, multiple upper caudal tuft on either side; ventral 

 brush well developed, confined to the barred area; gills 4, longer than the 

 segment, bluntly pointed. 



distribution. — Central and western United States, southern Canada and 

 Mexico. Southern States: Kentucky (140); Missouri (1). Other States: Cali- 

 fornia (67); Colorado and Idaho (52); Iowa (155, 156); Kansas (79); 

 Minnesota (131); Montana (112); Nebraska (178); New Mexico and North 

 Dakota (52); Oklahoma (159); Oregon (116); South Dakota (52); Texas 

 (108); Utah (142); Wyoming (52). 



BIONOMICS. — The females bite readily during the day but are more active 

 in the evenings. They are strong fliers and have been taken several miles from 

 their breeding places. Larvae occur mostly in alkaline waters in rain-filled 

 depressions and irrigation ditches. 



Aedes (Ochlerotatus) sollicitans (Walker) 



Culex sollicitans Walker, 1856, Ins. Saund. Dipt., p. 427. 



ADULT FEMALE. — Medium sized to rather large species. Head: Proboscis 

 dark scaled, rather broadly ringed with white near middle; palpi short, dark, 

 with a few white scales at tips. Occiput dorsally clothed with a broad longi- 



