AEDES ABFITCHII 689 



This species closely resembles Culex cantans, but differs In the median thoracic 

 stripe, the much more slender claws, its darker colour and smaller size. The larvae 

 are obviously different from those of cantans, possessing a very long anal siphon, 

 which has suggested the name. 



Described from two females and five males bred from larvae collected at Livings- 

 ton Park, New Jersey. 



Types in the collection of the New Jersey Experiment Station. 



ItescEiPTioN or Female, Male, and Laeva or Aedes abfitchii: 



Female. — Proboscis moderate, subcylindrical, flattened, the labellse conically 

 tapered; vestiture brownish-black with scattered pale scales, most abundant 

 before the middle ; setse minute, curved, black, those on the labellae more promi- 

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

 proboscis, clothed with black scales, tips and bases of joints with yellowish-white 

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

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

 remaining 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 whorls sparse, black. Clypeus shortly conical, prominent, 

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

 creamy white scales in the middle, a diffused patch of brown ones laterally, and 

 many slender erect forked black scales on the vertex ; cheeks clothed with flat 

 white scales, a small quadrate patch of black ones well up the sides at eye-mar- 

 gin; bristles bordering the eyes black, a tuft of pale ones projecting forward 

 between the eyes. 



Prothoracic lobes elliptical, remote dorsally, blackish, clothed with pale yellow 

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

 scales, a broad median stripe of golden brown ones, anterior margin narrowly 

 and the whole of sides of disk as well as the antescutellar area with pale yellow 

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

 group of black bristles and clothed with narrow, curved, pale yellow scales. 

 Pofitnotum elliptical, short, luteous, pruinose, nude. Pleurae and coxae pale 

 brown, clothed with elliptical white scales and rows of short pale bristles ; pro- 

 thoracic epimera clothed with narrow, curved, golden brown scales. 



Abdomen subcylindrical, flattened, posterior segments tapering; dorsal vesti- 

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

 basal band of creamy white scales and a narrow row of pale scales at tip; on 

 the sides the basal bands widen into large triangular spots, particularly on the 

 sixth and seventh segments; first segment with a large patch of white scales 

 and many pale ciliae ; venter clothed with creamy white scales and with median 

 segmental spots of black ones tending to form a longitudinal stripe. Cerci 

 black. 



Wings moderate, hyaline; petiole of the second marginal cell somewhat 

 shorter than its cell, that of second posterior cell about as long as its cell ; basal 

 cross- vein less than its own length distant from anterior cross-vein ; scales of 

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

 ones predominating the white ones most conspicuous on the subcostal and first 

 veins ; outstanding scales long, broadly linear, with blunt tips. Halteres entirely 

 pale. 



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

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

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

 apex, the stiff outstanding setas mostly black ; tarsi black, each joint of hind legs 

 with a broad basal ring of white scales, the first joint with many white scales 

 scattered over the surface and tending to form lines ; on the front and middle 



