680 MOSQUITOES OF NORTH AMERICA 



Descbiption of Female, Male, and Larva of Aedes stimtjlans : 



Female. Proboscis moderate, subcylindrical, flattened, the labellae conically 

 tapered; vestitnre brownish-black intermixed with sordid-white scales, espe- 

 cially beneath; setse minute, curved, black, those on the labellae more promi- 

 nently outstanding. Palpi stout, short, about one-fourth as long as the pro- 

 boscis, clothed with black scales, the bases of the joints with yellowish-white 

 scales ; setae moderate, black. Antennae with the basal joints somewhat shorter 

 than distal ones, second joint larger and thicker and pale at base, the remain- 

 ing joints rugose, blackish, pilose ; tori subspherical, with a cup-shaped apical 

 excavation, luteous, brown and with a patch of small white scales on the inner 

 side ; hairs of the whorls sparse, black. Clypeus convex, shortly conical, brown- 

 ish, nude. Eyes black. Occiput blackish, broadly clothed with narrow, curved, 

 dull yellowish white scales, many slender, erect, forked, black scales on the nape ; 

 cheeks clothed with flat, dull white scales, a small patch of black ones well up 

 the sides near eye-margin ; bristles bordering the eyes black, a tuft of pale ones 

 projecting forward between the eyes. 



Prothoracic lobes elliptical, remote dorsally, brown, clothed with dull whit- 

 ish scales and black bristles. Mesonotum dark brown, clothed with narrow, 

 curved scales, rich bronzy brown on the disk, the anterior and lateral margins, 

 the antescutellar space, and a subdorsal line on either side of it of sordid silvery 

 scales ; bristles moderate, black. Scutellum trilobate, luteous, each lobe with a 

 group of black bristles and with vestiture of pale sordid yellow-silvery scales. 

 Postnotum elliptical, prominent, luteous, pruinose, nude. Pleuras and coxas 

 pale brown, clothed with flat, elliptical, white scales and rows of short pale 

 bristles. 



Abdomen subcylindrical, flattened, the posterior segments tapering; dorsal 

 vestiture of black scales with a few pale ones intermixed, each segment with a 

 broad basal mediauly produced band of sordid creamy white scales, on the sides 

 the bands widen into large triangular spots, dorsally visible on fourth, fifth and 

 sixth segments ; first segment with a patch of white scales and with many pale 

 hairs ; venter clothed with sordid white scales with a few black ones intermixed, 

 sometimes forming a series of median spots. Cerci black. 



Wings rather broad, hyaline ; petiole of second marginal cell somewhat shorter 

 than its cell, that of second posterior cell of about the same length as its cell ; 

 basal cross- vein about its own length distant from anterior cross-vein ; scales of 

 veins black with dull white ones intermixed, rather evenly distributed, the white 

 scales predominant only on the subcostal vein, the black ones elsewhere; out- 

 standing scales long, broadly linear with blunt tips, blackish; fringe dusky. 

 Halteres entirely pale. 



Legs moderately slender ; femora clothed with dull creamy scales below, black 

 and whitish ones about evenly intermixed above, the tips narrowly pale ; tibiae 

 with black and whitish scales intermixed, the black ones predominating at apices, 

 the stiff outstanding setae mostly black ; tarsi black, on hind tarsi each joint with 

 a broad basal ring of white scales, the first joint with some white scales scat- 

 tered over the surface ; on the front and middle tarsi the bands are narrow, the 

 last two joints of front tarsi and the last of the middle ones wholly black. Claw 

 formula, 1.1-1.1-1.1. 



Length : Body about 5 mm. ; wing 4.5 mm. 



Male. Proboscis slender and straight. Palpi exceeding the proboscis by 

 nearly the length of the last joint; end of long joint and last two joints some"^- 

 what thickened and bearing many long brown hairs with some black and dull 

 yellow ones intermixed ; long joint clothed with black and whitish scales, with a 

 broad pale median ring, the last two joints broadly pale scaled at base. Antennae 



