Carpenter et al.: Mosquitoes of Southern U. S. 197 



rings much narrower and on segments 1 to 3 only. Wnig: Scales narrow, dark. 

 ADULT MALE. — Coloration similar to that of female. TERMINALIA (Fig. 

 104C). Lobes of ninth tergite (IXT-L) about two-thirds as long as wide, 

 separated by a little less than the width of one lobe, each bearing several short 

 stout setae. Tenth sternite (X-S) prominent, heavily sclerotized. Phallosome 

 (Ph) stoutly conical, about two-thirds as broad as long, rounded apically, open 

 ventrally, closed dorsally. Claspette stem (Cl-S) rather stout, pilose, somewhat 

 curved, extending slightly beyond basal lobe and bearing a short seta near 

 apex arising from a prominent tubercle; claspette filament (Cl-F) as long as 

 stem, slender, curved. Basistyle (Bs) about three and one-half times as long 

 as width across middle, cylindrical, rounded at apex, clothed with scales and 

 numerous long setae; basal lobe (B-L) distinct, conical, bluntly rounded at 

 apex and bearing numerous short setae; apical lobe absent. Dististyle (Ds) 

 about two-thirds as long as basistyle, broader at basal third; terminal claw (Ds- 

 C) slender, one-fifth as long as dististyle. 



LARVA. (Fig. 105). — Head broader than long. Antenna about half as long 

 as head, slightly curved, spinose; antennal tuft multiple, inserted near middle 

 of shaft, not reaching tip. Head hairs: Preantennal (A) multiple, barbed, 

 extending beyond insertion of antennal tuft; lower (B) and upper (C) long, 

 barbed, usually single; postclypeal (d) small, branched; sutiiral (e) trans- 

 sutural (f) and supraorbital usually double or triple. Upper lateral abdominal 

 hairs usually double on segments III to V. Comb of eighth segment of about 

 15 to 18 thorn-shaped scales in a patch; individual scale with long apical spine 

 and smaller lateral spinules. Siphon three to three and one-half times as long 

 as wide; pec ten of numerous, evenly-spaced teeth not quite reaching middle of 

 siphon; subventral tuft multiple, inserted beyond pecten; dorsal preapical spine 

 as long as apical pecten tooth. Anal segment a little longer than wide, com- 

 pletely ringed by the dorsal plate; lateral hair single; dorsal brush consisting of 

 a long lower caudal hair and a shorter multiple upper caudal tuft on either 

 side; ventral brush large, confined to the barred area; gills 4, variable in length, 

 but usually about as long as the anal segment, each tapering to a blunt point. 



DISTRIBUTION. — Along the coastal plain from Florida to Delaware and 

 west to Texas. Southern States: Alabama, Florida and Georgia (52); Louisi- 

 ana and Mississippi (97); North Carolina (166); South Carolina (97); 

 Virginia (49). Other States: Delaware (106); Maryland (19) New Jersey 

 (164); Texas (108). 



BIONOMICS. — King et al. (96) state that the females are rather severe 

 biters. The larvae are found in temporary rain-filled pools. Both adults and 

 larvae occur throughout the year in the extreme South (4th Sv. C. Med. Lab. 

 records, 1942-1944, unpublished). 



Aedes (Ochlerotatus) nigromaculis (Ludlow) 



Crabhamia nigromaculis Ludlow, 1907, Geo. Wash. Univ. Bull., 5:85. 



ADULT female. — Medium sized species. Head: Proboscis dark scaled, 

 ringed with white near middle; palpi short, dark. Broad median area of occiput 

 clothed with pale yellow lanceolate scales and erect pale forked scales; a sub- 



