440 MOSQTJITOES OF NORTH AMERICA 



Descbiption or Male and L>abva of Cuukx consoiatob (Female Unknown) : 



Male. — Proboscis long, straight, moderately stout and thickened along apical 

 half, vestiture entirely black. Palpi long, exceeding the proboscis by more than 

 the length of the last joint; long joint more than half the length of entire 

 palpus, slender at middle and thickened apically, just below its middle a pale 

 ill-defined constriction ; last two segments about equalling each other in length 

 and together not as long as preceding segment; terminal segment tapering and 

 pointed ; vestiture entirely black, except a narrow white ring at bases of last two 

 segments ; last two joints and apex of long joint with numerous very long black 

 hairs. Antennae plumose ; last two joints long and slender, rugose, pilose, black, 

 the others short, pale, with black rings at insertions of hair- whorls; hairs of 

 whorls long, brown; tori subspherical, with a cup-shaped apical excavation, 

 luteous. Occiput black, clothed with pale-yellowish, narrow, recumbent scales 

 on the vertex, broad, flat whitish ones on the cheeks, margins of eyes white; 

 some erect, pale, forked scales on the nape. 



Mesonotum brownish; vestiture of uniformly bright bronzy-brown, small, 

 narrow curved scales; setae brown, rather sparse, but coarse and very long. 

 Scutellum trilobate, with bronzy-brown scales ; a group of sets on each lobe, all 

 very long. Postnotum elliptical, prominent, pale brownish, nude. Pleurae light 

 greenish, a dark, transverse stripe below wing and another across middle. 



Abdomen narrow at base, depressed and broadening towards apex; vestiture 

 above deep black, with narrow whitish basal bands; first segment xmbanded and 

 with long pale setae; eighth segment entirely whitish scaled; venter yellowish- 

 white scaled, apices of segments blackish; lateral ciliation short, coarse, and 

 black; hind margins of segments with delicate pale cilia. 



Wings rather broad ; veins with narrow brown scales, those on fork of second 

 vein slightly broader and more dense ; second marginal cell long, nearly twice 

 as long as its petiole; stem of second posterior cell scarcely longer than cell; 

 basal cross-vein more than its own length from anterior cross-vein. 



Legs slender, rather long ; vestiture black with a bronzy luster ; femora pale 

 beneath and at sides nearly to apices ; posterior tibiae with smaU white tip ; all 

 the tarsi narrowly white ringed at bases of all the segments, the rings broadest 

 on hind tarsi. Claw formula, 1.0-1.0-0.0. 



Length : Body 3 mm. ; wing 2.5 mm. 



Genitalia (plate 12, fig. 87) : Side-pieces more than twice as long as wide, 

 tips conicaJly tapered; marginal appendages on two prominences, well sepa- 

 rated but contiguous at base, inner with three spines, outer situated at middle of 

 side-piece bearing four rods and a leaf-like appendage. Clasp-filament long 

 moderate, pilose at tip, with a small terminal appendage. Harpes furcate, one 

 branch with a rounded tip, the other produced into a slender column, bent over 

 at tip and bearing a row of teeth arranged like a comb. Harpagones probably 

 divided, obscured in specimen. 



Larva, Stage IV (plate 111, fig. 374). — Head missing. Body with skin 

 smooth; lateral abdominal hairs in twos after second segment, single on sixth. 

 Comb of eighth segment of many spines in a large triangular patch. Air-tube 

 very long and slender, straight, over sixteen times as long as wide, pecten of few 

 long teeth, on basal fifth of tube ; a single, rather long hair at middle on posterior 

 margin and another shorter one near apex; terminal hooks slender, simple. 

 Anal segment much longer than wide, ringed by the plate, which has a lateral 

 rosette of spines ; hairs all missing in our specimen ; ventral brush confined by 

 the chitinous ring. Anal gills longer than the plate, slender, pointed, equal. 



The larvae live in the water between the leaves of Bromeliaceae. 



Island of Trinidad, West Indies. 



Arima (F.W.Urich). 



