Carpenter et al.: Mosquitoes of Southern U. S. 75 



furcate at base; apex with three or four pairs of ligulate leaflets (Ph-L), the 

 more distal pairs longer; one or more pairs of the leaflets with a few short 

 coarse basal teeth. Claspette broad, fleshy, consisting of a dorsal lobe (CI-DL) 

 and a ventral lobe (CI-VL), fused basally but more or less distinct apically. 

 Dorsal lobe apically with about one to five stout blunt spines (often fused 

 to one another) ; ventral lobe usually bearing apically two large pointed spines 

 of unequal length, though occasionally with one or three (largest spine rarely 

 as broad as the blunt spine or fused spines of the dorsal lobe). Basis tyle (Bs) 

 conical nearly twice as long as broad, clothed with long setae and few or no 

 scales; two parabasal spines (P-S) and one internal spine (I-S) present. 

 D is t is tyle (Ds) about as long or slightly longer than basistyle and lacking 

 spicules (minute non-papillated hairs), curved, narrower medially, bluntly 

 pointed at tip; terminal claw (Ds-C) short, blunt. 



LARVA (Fig. 38). — Head: Inner clypeal hairs (2) simple, arising from 

 basal tubercles separated by at least the diameter of one of the tubercles; 

 outer clypeal hair (3) densely dichotomously branched, fan-shaped; post- 

 clypeal hair (4) small, branched, not reaching preclypeus; frontal hairs (5-7) 

 large, plumose; sutural (8) usually 8- to 10-branched; trans-sutural (9) 

 usually 6- to 8-branched. Antenna spinose; terminal hair (10) with several 

 branches, longer than the sabres; antennal tuft (11) inserted near middle, 

 several-branched, reaching base of sabres. Thorax: Prothoracic dorsal sub- 

 median hairs (1-3) consisting of a short inner hair (1), single or weakly 

 branched at tip; a much longer stout middle hair (2), with many branches; 

 and a short single outer hair (3). Prothoracic pleural group (9-12) of four 

 hairs; hair 9 long, 2-branched before middle or simple; hairs 10 and 12 long, 

 simple; hair 11 short, simple. Mesothoracic pleural group (9-12) of four 

 hairs; hairs 9 and 10 long, simple; hair 11 minute, simple; hair 12 simple, 

 about one-third as long as hairs 9 or 10; metathoracic pleural group (9-12) 

 of four hairs: hairs 9 and 10 lona, simple; h=i'r 11 minute, simple; hair 12 

 short, 2- to 4-branched. Metathoracic palmate (1) small with transparent leaf- 

 lets. Abdomen: Submedian dorsal hair (0) obsolete on segments IV and V; 

 palmate hair (1) well-developed on abdominal segments III to VII, rudimen- 

 tary on segments I and II; individual leaflets with serrations on outer third. 

 Antepalmate hair (2) on segments IV and V single, sometimes double. 

 Upper lateral hair (6) on segments I to III long, plumose. Pecten as 

 illustrated. 



distribution. — Eastern and central United States, north to the southern 

 part of Canadi and scu*h to Veri Cru-'. Mexico. It reach'^s its rr^atPSt 

 abundance in the southern United States. Southern States: Alabama (96); 

 Arkansas (30); Florida and Georgia (96); Kentucky (140); Louisiana and 

 Mississippi (96); Missouri (1); North Carolina, South Carolina and Ten- 

 nessee (96); Virginia (49). Other States: Connecticut (94); Delaware 

 (106); Illinois (94); Indiana (76); Iowa (155, 156); Kansas (79); Mary- 

 land (19); Massachusetts, Michigan and Minnesota (94); Nebraska (178); 

 New Hampshire (94); New Jersey (77); New York (116); Ohio (94); 



