a handbook of the mosquitoes of north america - Systematic Catalog ...

CULICIKI 195
blackish scales and bristles with a broad, bare stripe each side; be-
yorid this a very narrow line of similar scales, not reaching anterior
margin ; sides with a broad patch of flat, white scales; other parts
bare except a few white scales on antescutellar space. Abdomen
clothed with scales having a bright bluish lustre, the apices of seg-
ments with a narrow line of white scales; venter pale scaled. Femora
yellow scaled, the apices with upstanding black scales; tibiae with
short outstanding scales having a slight bluish reflection; tarsi largely
black scaled; the first two segments, especially on hind legs, with
narrow basal white rings. Wing scales narrow, brownish-black.
Male hypopygium. (Fig. 1, Pl. XVIII.) Side-piece stout, about
twice as long as wide; apical and basal lobes absent. Claspette with
stour stem and terminates in a large capitate head, densely clothed
with coarse setae. Clasper large, most irregular in shape, with a
large thick extension at middle, and terminating in a rounded apex
with a claw. Mesosome a stout cylinder, tapering at both ends, open
on venter and closed on the dorsum. Lobes of the ninth tergite small,
each bearing two stout spines.
Larva. “Head subquadrate, wider than long. Antennae small,
spinulated. Upper head-hair single, lower divided into three or four
beyond the middle. Lateral comb of the eighth segment of many
spines in a large patch, the posterior row of large spines, each with
long central spine and small spines on the corners. Air-tube four
times as long as wide, tapered outwardly; pecten of long teeth not
reaching the middle of the tube; a single long hair beyond. Anal
segment longer than wide, encircled by the plate, dorsal tuft a long
hair and short tuft on each side; lateral hair single, small ; ventral
brush of long tufts the length of the segment. A4nal gills longer than
the segment, slender, tapered.” (Dyar, 1928.)
P. hozcwdii occurs in the southern United States, Mexico
and some of the West Indian Islands. The larvae are found
in temporary rain-pools where they feed on other mosquito
larvae.
PSOROPHORA DISCOLOR Coquillett
C&x discolor Coquillett, Can. Ent. 35, 256. 1903.
Female. “Proboscis broadly pale yellowish in the middle, black-
ish at base and tip. Head and prothoracic lobes with hair-like pale
scales. Mesonotum with fine pale and brown scales, longitudinally
lined, forming narrow brown central line and broader lateral ones;
pleurae and coxae with few fine, pale scales. Abdomen blackish