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

198 MOSQUITOES OF NORTH AMERICA
cure air. Only a single species occurs in North America
(T. titillam is also recorded from southern Florida).
TENIORHYNCHUS PERTURBANS Walker
Culex perturbam Walker, Ins. Saund., Dipt., 428. 1856.
C~lex testaxeus Van Der Wulp, Tids, voor Ent. (2) 10, 128.
1867.
Tmiorhynchus richardi Ficalbi, Bull. Sot. Ent. Ital., 21, 50.
1889.
Culex oclzropz~ Dyar and Knab, Jour. N.Y. Ent. Sot., 15, 100.
1907.
FeTnaZe. Length 5 mm. ; wing 5 mm. Proboscis black, a broad
band of pale yellowish scales near the middle, the basal part with
black and pale scales intermixed, the black predominating. Occiput
dark brown, with numerous pale yellow, narrow, curved scales and
many erect forked scales, pale yellowish in the median area, black
at the sides. Mesonotum light brown, with narrow, curved, black and
pale yellow scales variously intermingled so as to form no definite
pattern ; two longitudinal bare impressed stripes. Bristles numerous,
brown to yellowish-brown. Abdomen black with segmental basal
barids of white scales, the basal bands are small or lacking on the last
few segments ; the black scales are generally mixed with a few pale
scales; venter with black and white scales intermixed, the white ones
predominating on the basal part of the segments. Wings with broad,
spatulate, black and white scales, the black ones predominating. Legs
slender; femora clothed with black and white scales, apical portions
almost entirely black scaled, a white spot at the apices and the hind
femora with a white ririg on outer half; tibiae with black and white
scales, the apices white scaled, and the hind tibiae with a white ring
on the outer half; first joint of all tarsi black scaled with a basal
narrow ring and a broad median ring, white; all the other tarsal
joints black with basal half white scaled.
Male hypopygiunz. (Fig. 4, PI. XVIII ; Figs. 6 and 7, Pl. XXV.>
Side-pieces stout, longer than wide, somewhat conical; apical lobe
lacking; basal lobe a large triangular flap lying on the median face
of the side-piece and terminates in a stout cylindrical, blunt spine.
Clasper with a stout basal portion, greatly enlarged beyond the middle,
and terminating in a sharp point which bears a short articulated spine.