NO. 3557 SUBGENUS CULEX—BRAM 39 
normal in size, tapered to a bluntly rounded apical point, and possess- 
ing minute, longitudinal striations; one long, gently curved accessory 
seta next to the leaf. Dististyle normal. Tenth sternite crowned 
with a dense tuft of short, pointed spines; basal arm moderately long, 
curved, and somewhat flattened distally; three cercal setae present. 
External process not present. Ventral cornu large, gently curved, and 
tapering to a point. Median process with two or less small, lightly 
sclerotized denticles. Basal process absent. 
Larva: The larva and pupa of this species were described for the first 
time by Bachmann and Casal (1962). 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 
short, multiple. Mentum with about 12 subequal teeth. Comb with 
many scales in two or three rows; each scale rounded apically and 
fringed with subequal spinules. Siphonal index about 6.0; with six 
pairs of double or triple siphonal tufts beyond the pecten. Pecten 
with 12 to 13 teeth, restricted to the basal fourth of the siphon. Anal 
segment completely ringed by the saddle, which is covered with very 
fine spicules. 
MATERIAL EXAMINED.— The male terminalia of three specimens from 
Argentina. 
DistripuTIoN.—Reported from the states of Cordoba, Misiones, 
Santiago del Estero, Buenos Aires, and Mendoza, Argentina. A 
questionable record is from Brazil. 
Culex (Culex) brevispinosus Bonne-Wepster and Bonne, 1919 [1920] 
FiaureEs 9c, d 
Culex (Culex) brevispinosus Bonne-Wepster and Bonne, 1919 [1920], p. 171. 
Systematics.—This species is closest to Culex surinamensis, but 
can be distinguished by the clavate ventral cornu. The distinctive 
teeth of the median plate of the mesosome are also diagnostic. 
SALIENT CHARACTERS.—Adult female: See table 1. 
Male terminalia: Basistyle tubular, three times as long as the basal 
width; extremely minute spicules present (seen only with phase con- 
trast) in addition to normal, long setal pattern. Apical lobe of the 
basistyle rather flattened and undivided. Appendicles of the apical 
lobe as follows: three straight, thin rods which are subequal in length 
followed by approximately 10 straight, narrow setae; no leaf is present. 
Dististyle normal. Tenth sternite crowned with a sparse tuft of 
short, pointed spines; basal arm long and prominently recurved; two 
cercal setae present. External process moderate, gently incurved, 
and tapering to a point; not reaching the ventral cornu. Ventral 
cornu dentiform, close to the teeth of the median process. Median 
