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

156 MOSQUITOES OF iYORTH AMERICA
chitinized plate; dorsal brush a long hair and a stout tuft on each
side; ventral brush well developed, confined to the barred area be-
hind the dorsal plate. Air-tube stout, slightly tapering beyond the
middle, nearly twice as long as wide; pecten extending to near the
middle of air-tube; tuft large, situated beyond the middle.
ana.
Aedes atlauzticxs occurs from southern New York to Louisi-
AEDES INFIRMATUS Dyar and Knab
Aedes infirmatus Dyar and Knab, Jour. N. Y. Ent. Sot. 14,
197. 1906.
Female. Length 4.5 mm.; wing 3.5 mm. Proboscis slender,
brown. Occiput brown with silvery scales in the middle, brown ones
on the sides and numerous erect, narrow scales on the nape. Mesono-
turn reddish-brown, a broad median patch of silvery scales extending
back to just beyond the middle, brown on the sides and posterior
half. Abdomen black, with lateral, segmental spots, white; venter
white scaled. Legs brown, the femora yellowish beneath. Wing
scales very narrow, dark.
Male hypopygiuwa. (Fig. 5, Pl. XV.) Side-pieces three times
as long as wide; apical lobe rounded, not prominent and with few
setae; basal lobe sharply conical clothed with short setae and a long,
stout, curving spine on the outer margin. Clasper slightly expanded
medianly. Claspette with a long, curving, cylindrical stem; filament
broadly expanded at middle with a retrorse branch bearing one or two
smaller ones, apex sharply pointed. Mesosome cylindrical, gradually
narrowing to the apex; widely open on the ventral side, closed on
the dorsum and at the base. Lobes of the ninth tergite short, ap-
proximate, and each bears a series of rather stout spines.
Larva. “Head rounded, bulging at the sides; antennae rather
long, slender sparsely spicular. Head hairs single, anteantennal tuft
multiple. Lateral comb of the eighth segment of rather numerous
scales in an irregular double row. Air-tube nearly three times as long
as wide, the pecten running a little beyond the middle, followed by a
hair-tuft. Anal segment rather longer than wide, ringed by the
plate, the ventral brush posterior. Dorsal tuft a long hair and brush
on each side; lateral hair single, small. Anal gills longer than the
segment, pointed.” (Dyar, 1928.)
Aedes infirwmtus is recorded from Georgia, North Carolina,
Florida, Louisiana, Arkansas and Texas.
It breeds in tem-
porary rain po,ols, especially those under palmettos.
The