NO. 3557 SUBGENUS CULEX—BRAM 109 
with a dense tuft of short, pointed spines; basal arm moderate in 
length, prominently curved; three cercal setae present in a compact 
group. External process broad on the proximal half, then sharply 
tapering to a point which reaches slightly beyond the ventral cornu; 
a prominent additional sclerite on the inner margin of the proximal 
half. Ventral cornu large, rounded and rugulose. Median process 
with four to six distinct, sharply pointed teeth. Basal process short, 
straight, and bluntly rounded. 
Larva: Antennal tuft located in a constriction near the outer 
third; antennal shaft spiculate basally. Postclypeal head hair 4 
short, single; frontal head hairs 5, 6, and 7 multiple, long, and barbed. 
Mentum with about 17 teeth; the apical tooth longer and broader 
than the lateral teeth; subbasal lateral teeth longer than other lateral 
teeth. Thorax glabrous. Comb with many scales in a patch; each 
scale rounded apically and fringed with subequal spinules. Siphonal 
index about 6.0; four siphonal tufts consisting of single setae inserted 
beyond the pecten. Pecten with about 10 to 14 teeth on the basal 
third of the siphon; each tooth with one to four coarse barbs on one 
side. Anal segment completely ringed by the saddle which has 
several fine spicules distally. 
MATERIAL EXAMINED.—Five adult males and associated terminalia 
from Costa Rica, one from Colombia, one from the Dominican 
Republic, and three from the United States. The lectotype male 
terminalia was also studied. 
DistrisuTIon.—Reported from the southwestern United States, 
Mexico, and Panama. The author has seen specimens in the U.S. 
National Museum collection from: Santa Anna, Costa Rica; Bara- 
hona, Santo Domingo, Dominican Republic; and Catera al Colegio, 
Bogota, Colombia. 
Culex (Culex) tramazayguesi Duret, 1954 
FIGURE 33¢ 
Culex (Culex) tramazayguesi Duret, 1954, p. 23. 
SysTEeMATIcs.—Examination of Duret’s (1954) original figures and 
description of this species suggests the possibility that it is not a 
member of the subgenus Culex, however, since actual specimen 
have not been examined, the species is considered a member of the 
subgenus for purposes of this study. 
Culex tramazayguesi is readily distinguished from all other members 
of the subgenus by the characteristic shape and number of the ap- 
pendicles on the apical lobe of the basistyle. 
SALIENT CHARACTERS.—Adult female: See table 1. 
Male terminalia: Basistyle conical, about twice as long as the basal 
width. Apical lobe of the basistyle prominent, divided into two sec- 
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