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

CULICIDAE
Canada and the northern border of the United States, Europe
and Asia.
ANOPHELES WALKERI Theobald
fllzophe1e.s xlallzeri Theobald, Mon. Culicidae 1, 199. 1901.
Female. Length 5 mm.; wing 5 mm. Proboscis long, black. Palpi
slightly shorter than the proboscis, slender, clothed with narrow,
lanceolate scales, roughened on the first segment, appressed on the
others, black, with dull silvery-white narrow rings at articulations
of first and second, second and third segments and at apex of last
segment. Occiput brownish-black, whitish near the margin of the
eyes; vestiture of erect, narrowly triangular, slightly forked, black
scales, a few recumbent slender white scales anteriorly in the middle
line. Mesonotum brown, a narrow lighter, pruinose stripe on each
side anteriorly ; clothed with short, golden brown hairs; bristles at
roots of wing stout, dark brown.
Wing veins clothed with black and brown, narrow, nearly linear
scales, the black scales showing massing as in A. yuadriwzaculatz~s but
never so dense (Fig. 3, PI. VIII). The marginal fringe is entirely
black. Legs black, apices of femora and tibiae yellowish.
iMale hypopygium. (Fig. 3, Pl. IX.) Side-piece at least one and
one-half times as long as wide, slightly tapering to apex; apex broadly
rounded; clothed with hairs and setae, scales absent. Internal spine
well developed, about one-third down the side-piece. Basal spines,
two, large. Cl as p er longer than side-piece, broad at base, narrowed
beyond but not expanded at apex. Claspette bilobed, nearly reaching
apex of mesosome; dorsal lobe bears at apex two large club-shaped
processes which are united at their bases; ventral lobe bears a stout,
sharp pointed spine at apex; slightly mesad is a second sharp pointed
spine. Mesosome long and narrow : leaflets four pairs, all narrow, the
posterior two pairs longer. Ninth tergite consists of a narrow band,
slightly chitinized ; lateral processes long and pointed.
Larva. The larva is almost identical with that of qzladriwzaczlla-
tus. The characters indicated in the key may aid in identifying the
species.
This species occurs sparingly throughout eastern North
America west to Minnesota. It is very rare. Although the
female was described by Theobald ( 1901) from specimens col-
lected at Lake Simcoe, Ontario, the males and larvae were first
obtained and described by Matheson and Shannon ( 1923).
The larvae were obtained very sparingly in small pools in a
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