Carpenter et ai..: Mosquitoes of Southern U. S. 133 



3. Subventral tuft of siphon very large, multiple, as long as siphon; siphon small, 



not inflated, with a pair of strong dorsal reflexed spines subapicaliy; antennae 



inflated discolor (Coq.), p. 159 



Subventral tuft of siphon multiple, very small or obsolete; siphon large, more or 

 less inflated medially, without a pair of strong dorsal reflexed spines subapical- 

 iy; antennae not inflated 4 



4. Upper head hair (C) and lower head hair (B) multiple 



confmnis (L. Arr.), p. 155 



Upper head hair (C) single or double, lower head hair (B) single, double or 

 triple 5 



5. Upper head hair (C) and lower head hair (B) single; antennae no longer than 



the head 6 



Upper head hair (C) double, lower (B) double or triple, antennae usually 

 longer than head 8 



6. Hair of lateral valve of siphon more than half as long as apical width of 



siphon 7 



Hair of lateral valve of siphon less than half as long as apical width of siphon 

 pygmaea (Theob.), p. 162 



7. Antennal and preantennal tufts strongly multiple (antennal tuft generally 8 to 



15-branched, preantennal tuft about 6 to 8-branched), conspicuously barbed; 

 antenna apically with a short spine, a moderately long spine and a membran- 

 ous papilla, and subapicaliy with 2 longer spines; comb with about 6 scales 



signipennis (Coq.), p. 164 



Antennal and preantennal tufts only about 2 to 4-branched, occasionally 

 rebranched toward rip, sparsely barbed; antennal tip with 3 long spines, one 

 short spine and a membranous papilla, ail apical in position; comb with 4 

 scales, rarely 5 cpauescens (Coq.), p. 140 



8. Siphon only slightly inflated; subapical spine of largest comb scale only about 



1/5 to 1/4 as long as apical spine Varipes (Coq.), p. 152 



Siphon strongly inflated; subapical spines of largest comb scale about 1/3 as 

 long as apical spine 9 



9. Lower head hair (B) triple, sometimes double, not reaching preclypeus, the 



branches nearly equal ; upper head hair (C) double, not reaching preclypeus, 

 the branches nearly equal honida (D. and K.), p. 146 



Lower and upper head hairs (B and C) double, reaching to or beyond pre- 

 clypeus 10 



10. Lateral abdominal hairs single or double on segments IV to VI; branches of 



lower head hair (B), as well as upper head hair (C), nearly equal 



ferox (Humb.), p. 143 



Lateral abdominal hairs multiple on segments IV lo VI; branches of lower head 

 hair (B), as well as upper head hair (C), not equal, one branch of each 

 being shorter and weaker than the other longipalpls Roth, p. 150 



PsoROPHORA (Psorophora) ciliata (Fabricius) 



Culex ciliata Fabricius, 1794, Ent. Syst., 4:401. 



adult female. — Very large species. Head: Integument of proboscis yel- 

 low, becoming dark at apical fourth; scales on basal half long, dark, suberect; 

 scales beyond middle of proboscis appressed, yellow, speckled with dark, those 

 at tip entirely dark. Palpi about one-third as long as proboscis, clothed with 

 dark suberect scales. Occiput white scaled, with a narrow longitudinal nude 

 stripe. Thorax: Integument of scutum dark brown; vestiture consisting of a nar- 

 row median longitudinal stripe of bright golden-yellow lanceolate scales, a sub- 

 median longitudinal line of golden-yellow lanceolate scales adjacent to a line of 

 slender black scales, and a large lateral area of broad appressed pale-yellow to 



