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

the tube
tube.
CULICINI 125
; tuft of three to four hairs, situated at the middle of the
This species is widely distributed throughout Canada, the
Northern United States, Europe and Northern Asia. The lar-
vae are found during the early spring months and are usually
associated with A. fitchii, A. abserratus, A. intrztdens, etc. It
breeds in wooded swamps, early spring filled pools which have
a floor of decaying leaves and occasionally in grassy bogs. The
adults are found late into July in wooded areas and bite fiercely
when disturbed during the day.
s4~~~~ INTRUDENS Dyar
Aedes intrudens Dyar, Ins. Ins. Mens. 7, 23. 1919.
CziZex iflzpiger Felt (not Walker) Bull. 79, N.Y. State Mus.,
316. 1904.
Aedes inzpiger Howard, Dyar and Knab (not Walker) Mosy.
N. and Cent. Amer. and W.I. 4, 755. 1917.
Fenzale. Length 5-6 mm.; wing 4.5 mm. Proboscis black. Occi-
put black, densely clothed with yellow, curved scales; nape with many
yellowish, narrow, erect, slightly forked scales; cheeks with flat,
broad, yellow scales. Mesonotum with brownish-yellow scales all
over; oftentimes there may be slight indications of two narrow median
brown lines or the scales in old specimens may be almost yellowish
white. Abdomen black; each segment with a broad basal band of
white scales; venter white scaled. Wing scales all blackish-brown.
Legs slender, blackish-brown.
Male hypopygiwz. (Fig. 5, Pl. XI.) Side-pieces nearly three
times as long as wide; the apex just beneath and beyond the apical
lobe bears a dense patch of stout hairs; apical lobe distinct, rounded
apically and clothed with rather large somewhat retrorse setae; basal
lobe elongate and bears at its apex two close-set, stout spines; at base
of this lobe there is a prominent stout spine. Clasper short, swollen
medianly. Claspette with long, stout stem; the proximal part large,
setose, its apex sharply constricted and bearing a short, stout seta;
apical-half slender; filament large, angularly expanded at the middle,
the tip of the angle slightly recurved. Mesosome a short, stout cylin-
der, sharply constricted before the apex; narrowly open along its ven-
tral median line and open at the base and along the median dorsal
line. The chitinization of the mesosome is pronounced on the sides