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



249 



basal width, the basal two-thirds stout, outer third tapered; pecten of about 8 

 to 12 rather evenly spaced teeth on basal third of siphon; individual tooth with 

 1 to 5 coarse teeth on one side; four or five pairs of subventral tufts inserted 

 beyond pecten (the subapical tufts inserted laterally; the apical and subapical 

 tufts usually double or triple; proximal tufts multiple, slightly barbed). Anal 

 segment longer than wide, completely ringed by the dorsal plate; lateral hair 

 long, single; dorsal brush consisting of a long lower caudal hair and a shorter 

 2-branched upper caudal tuft on either side; ventral brush well-developed, con- 

 fined to the barred area; gills 4, as long as the segment, each tapering to a 

 blunt point. 



DISTRIBUTION. — Occurs throughout the tropical and subtropical regions of 

 the world. Southern States: Alabama (170); Arkansas (30); Florida and 

 Georgia (96); Kentucky (140); Louisiana and Mississippi (96); Missouri 



Fig. 137. Larva of Culex quinquefascialus Say. A, Terminal segments. 

 B, Comb scale. C, Pecten tooth. D, Head. 



