NO. 
12. 
13. 
14. 
15. 
16. 
LG 
18. 
19. 
20. 
21. 
22. 
23. 
24. 
25. 
26. 
27. 
28. 
29. 
30. 
3557 
(11) 
(10) 
(13) 
(14) 
(15) 
(13) 
(17) 
(18) 
(19) 
(9) 
(21) 
(22) 
(23) 
(22) 
(25) 
(25) 
(27) 
(21) 
(29) 
SUBGENUS CULEX—BRAM 19 
Siphonal index about 6.0; upper and lower frontal head hairs 5 and 6 
with three or four priches yeas , . . . levicastilloi 
Siphonal index about 4.5; upper and foes forte Revd hairs 5 and 6 
moaultHple wars see Su ioe phi ded cee, Wiens) os Ske SUPINAMENSIS 
Four siphonal tufts ae S Beas CHM oe Gale Net Kureits, cs 0 LA 
Three siphonal tufts present . . : SES ee 
Anal gills long and Bee porated nel piphonale tuft angle or 
double lite (si. : eS NS 
Anal gills short aad nointed: apical Sianouall tuft peiple. Ghabilitator 
Siphonaliindexd(moriless eine Hh welace. ane Pein tia. 6 AG 
Siphonal index 8.0 or greater. . . . . . . . . Covagarciai 
Siphonal index 5.5 to 7.0; preantennal fond feat 4 with six or seven 
branches) ssn . . . .Nigripalpus 
Siphonal index 5.2 iS as 6; cpenenell fread ete 4 with eight to 10 
branchesigts, «1.4 aieaitu is) Pied biases aaah ulo eh woe ACEO at SCI Itar 
Siphonal index 6.0 or ee NV AL RT CRBS TRS MOET MIME ee to RS 
Siphonal index 8.0 or greater... . A atte _ brevispinosus 
Anal gills longer than the length of the anal segment; less than 15 
pecten teeth on the siphon . . . ee. wet SND) 
Anal gills shorter than the length of the ell <stinen about 16 pecten 
teethonthesiphon. . . AP | Sphinx 
Basal siphonal tuft located Sail aera Me Renee MAD Hea he ak Cerys 20 
Basal siphonal tuft located close to, or within the pecten . . declarator 
Lower frontal head hair 6 triple; L/S ratio about 4.5... . .bidens 
Lower frontal head hair 6 with four or five branches; L/S ratio about 
SL OMaN Nokes Cesel oom! Anueiihe Debes:.. s mollis 
Siphon with five or more iahonat ee a rely eet RN, 2s Be oe 
Siphon with less than five siphonal tufts ........... .29 
Siphonal tufts inserted inastraightline. .. . ane, pega ot ac 
One or more siphonal tufts inserted laterally out of ine Met 2 a eset oO) 
More than five siphonal tufts present on the siphon ..... . .24 
Five siphonal tufts present on the siphon. ..... . .. . tarsalis 
Six siphonal tufts present; upper and lower frontal head hairs 5 and 6 
with four branches... . . . .secutor 
Eight siphonal tufts present; upper ern lower one Al Head hairs 5 and 
6hwith more thant foursbranches’..) S925 ae 6.) oO) efinlayi 
SiphonallindexaGiOEtorSOtemie cb ecde oath balers eee acue tue eeeeionieet.leign a 20 
Siphonal index 5.0 orless. . . . eee SB ay Pee 
Five siphonal tufts present; pecten ae 15 tooth Ser W eryihrothorax 
Six siphonal tufts present; pecten with 10 teeth. . . . . . brethesi 
Pecten with 10 or more teeth; subapical siphonal tuft with five or less 
branches’. 27% Soe eae 
Pecten with less eine 10 teeth: Scanapical Biplionel tuft oh more than 
five branchesia /sunee . . . . apicinus 
Upper frontal head hair 5 ea foe perce ote frontal head hair 
6 with four branches; pecten with about 15 teeth . . . diplophyllum 
Upper frontal head hair 5 with six branches, lower frontal head hair 6 
with seven branches; pecten with about 10 teeth... . . .peus 
Siphenallandexi6,Oior less: So ee lee SUR ee Pees Sih 
Siphonal index greater than 6.0... . : . 30 
Postclypeal head hair 4 short, double; Heed Perecved to the base 
third fofithe siphon? 2.) 4/80. 03) We i ee pinarocampa 
