788 3I0SQUIT0ES OF NORTH AMERICA 



Description of Female, Male, and Laeva of Aedes euplocamus: 



Female. Proboscis moderate, subcylindrical, uniform; labellae conically 

 tapered; vestiture black; setae curved, minute, black, those on labellae more 

 prominently outstanding. Palpi short, about one-fifth as long as proboscis, 

 black, with sparse bristly setge. Antennae filiform, the joints subequal, distal 

 ones slightly longer, rugose, blackish, pilose ; second joint somewhat thickened, 

 pale at base; tori subspherical, with a cup-shaped apical excavation, yellow, 

 brownish black on inner side ; hairs of whorls sparse, moderate, black, Clypeus 

 short, rounded triangular, convex, black, nude. Eyes black. Occiput dark 

 brown ; vestiture of narrow scales on the center of vertex, broad appressed ones 

 on the sides, silvery-white in middle and along margins of eyes, blackish-brown 

 laterally ; yellowish silvery erect forked scales on the nape ; setae along margins 

 of eyes black, those projecting between the eyes pale, 



Prothoracic lobes elliptical, remote dorsally, dark broM'n, similarly colored 

 to sides of mesonotum, with some dark elliptical scales and dark seta3. Meso- 

 notum dark brown, clothed with narrow curved scales, a large elongate silvery- 

 white patch medianly on anterior two-thirds, broadened posteriorly, tridentate 

 behind; golden brown on sides of disk and behind, pale around antescutellar 

 space, the brown scales smaller than the silvery ones. Scutellum trilobate, 

 clothed with dark brown scales and silvery ones medianly, each lobe with a group 

 of brownish-black bristles. Postnotiim elliptical, prominent, brown, nude. 

 Pleurge brown, coxse luteous, clothed with patches of elliptical, flat white scales 

 and rows of pale setae. 



Abdomen subcylindrical, depressed, tapering posteriorly; dorsal vestiture of 

 black scales, with lateral, basal, segmental, triangular white patches, a row of 

 inconspicuous, median, basal, segmentary small spots of dirty whitish scales, 

 obsolete on last two segments ; first segment with black scales and many fine pale 

 hairs; venter wholly yellowish-white scaled, Cerci black. 



Wings rather broad, hyaline; petiole of second marginal cell about half as 

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

 vein about its own leng"th distant from anterior cross-vein ; scales wholly black- 

 ish brown, the outstanding ones narrowly ligulate, dense and slightly broader 

 on forks of second vein. Halteres whitish, with dark knobs. 



Legs slender, moderately long; vestiture black with a bronzy and bluish re- 

 flection; femora pale whitish beneath except at tip; knees pale scaled; tibiae 

 and tarsi without distinct pale markings beneath. Claw formula, 1.1-1.1-1.1. 



Length: Body about 4 mm.; wing 3.5 mm. 



Male. Proboscis straight, moderately long, black scaled. Palpi exceeding 

 the proboscis by the length of the last joint ; end of long joint and last two joints 

 slightly swollen and with abundant long black hairs ; vestiture entirely brown- 

 ish-black. Antennae plumose, the last two joints long and slender, rugose, pilose, 

 black, the others short, narrowly black ringed at insertion of hair-whorls, pale 

 beyond; hairs long, dense, black shading to brown. Coloration similar to the 

 female, the median silvery patch of the mesonotum larger than in the female and 

 fused behind with the silver-scaled antescutellar area ; scutellum largely silver 

 scaled. Abdomen elongate, depressed, dorsally with narrow, yellowish-white, 

 basal segmental bands, dilated laterally only on the seventh segment; lateral 

 ciliation of abundant, long, fine pale hairs. Wings narrower than in the female, 

 the stems of the fork-cells much longer, the vestiture sparse. Claw formula, 

 2.1-2.1-1.1. 



Length : Body about 4 mm. ; wing 3 mm. 



Genitalia: Side-pieces over twice as long as wide, roimded at tip; apical 

 lobe narrowly continued to base ; basal lobe small, rounded prominent, densely 

 setose, with a long stout spine within. Clasp-filament slender, slightly swollen 



