Carpenter et al.: Mosquitoes of Southern U. S. 147 



preclypeus; upper (C) double, barbed, short, not reaching preclypeus (branches 

 of B as well as C nearly equal); postclypeal (d) small, multiple; sutural (e), 

 trans-sutural (f), and supraorbital multiple. Upper lateral abdominal hairs 

 multiple and longer on segments I and II, 3 to 4-branched on III, usually 

 double or triple on IV to VII. Comb of eighth segment of 6 to 8 scales in a 

 curved row; individual scale trifid, with subapical spines about one-third as 

 long as apical spine. Siphon strongly inflated, about four times as long as basal 

 width; pecten of about 3 to 5 widely spaced teeth on basal fourth of siphon; 

 individual tooth with one or more large coarse teeth on one or both sides; 

 subventral tuft minute, multiple, about as long as apical pecten tooth, inserted 

 laterally at apical third of siphon; hair of dorsal valve shorter than apical width 

 of siphon. Anal segment longer than wide, completely ringed by the dorsal 

 plate; lateral hair small, usually 6 to 8-branched near base; dorsal brush con- 

 sisting of a long lower caudal hair and a short multiple upper caudal tuft on 

 either side; ventral brush extending almost the entire length of the anal seg- 

 ment; gills 4, longer than the anal segment, each gradually tapering to a point. 



DISTRIBUTION. — Eastern United States. Southern States: Alabama and 

 Arkansas (153); Florida (4th Sv. C. Med. Lab. records, 1945, unpublished); 

 Georgia, Kentucky, Louisiana, Mississippi, Missouri, North Carolina, South 

 Carolina, Tennessee and Virginia (153). Other States: District of Columbia, 

 Illinois, Indiana, Iowa, Kansas, Maryland, Ohio, Oklahoma and Texas (153). 



BIONOMICS. — The females are fierce biters, attacking any time during the 

 day in shady places. The larvae have been taken by Eaton in Georgia in par- 

 tially shaded temporary pools following prolonged rains. Adults have been 

 collected from April to September in the southern states (4th Sv. C. Med. 

 Lab. records, 1942-1944, unpublished). 



PsoROPHORA (Janthinosoma) longipalpis Rothi 



Psorophora longipalpis Roth, 1945, Proc. Ent. Soc. Wash., 47:1 (synonymy given). 



ADULT FEMALE. (Adapted from Roth, 1945). — Medium sized species. 

 Head: Proboscis long, dark scaled; palpi dark, a little more than one-third as 

 long as proboscis, with the fourth segment straight, more than one and one- 

 half times as long as the other segments combined. Occiput dorsally with a 

 large median patch of both broad and narrow recumbent white scales; occiput 

 laterally with a patch of broad appressed violet scales, margined with broad 

 appressed white scales above and broad yellowish-white scales below. White 

 erect forked scales numerous on central portion of occiput. Thorax: Integu- 

 ment of scutum black, with a broad longitudinal median stripe of narrow dark 

 bronzy brown scales; the longitudinal median stripe margined laterally with 

 broad white to yellowish scales; lanceolate pale scales intermixed with broad 

 ones on the posterior third of the scutum; prescutellar space margined by 

 broad pale scales. Posterior pronotum with a few broad pale scales. Abdotnen: 

 First tergite yellow scaled; remaining tergites violet scaled dorsally, with small 

 apical patches of yellowish scales laterally on IV to VI (sometimes VII). 



1 This species has been confused with P. horrida. 



