CULEX EEVELATOR 275 



Description of Feiniale, Male, and Larva of Culex revelator: 



Female. Proboscis moderately slender, uniform, labellge conically tapered; 

 vestiture brownish black, darker towards tip, labellos with short outstanding 

 set. Palpi short, one-fifth as long as proboscis, dark brown. Antennas moderate, 

 joints subequal, rugose, pilose, black; hairs of whorls sparse, moderate, black; 

 tori subspherical, with a cup-shaped apical excavation, dark brown. Clypeus 

 rounded triangular, dark brown, nude. Eyes black. Occiput blackish, clothed 

 with narrow, curved golden-brown scales and numerous erect, forked black ones 

 on vertex, broad , flat white ones on sides ; margin of eyes white scaled. 



Prothoracic lobes elliptical, remote dorsally, with brown bristles. Mesono- 

 tum blackish brown, clothed with narrow, curved coppery-brown scales, some- 

 what more yellowish on anterior edge and around ante-scutellar space, the 

 bristles long and black. Scutellum trilobate, clothed with narrow, curved pale- 

 yellovrish scales, each lobe with a tuft of black bristles. Postnotum elliptical, 

 prominent, dark brown, nude. Pleurae gray and luteous, coxte luteous, with a 

 few rather narrow elliptical whitish scales and fine pale bristles. 



Abdomen subcylindrical, depressed, truncate at tip; dorsal vestiture black, 

 with a row of basal segmentary narrow bands, triangularly widened in the 

 middle, joining a row of lateral white spots ; first segment dark scaled dorsally ; 

 venter brownish-vellow scaled, \vithout distinct bands. 



Wings moderate, hyaline; petiole of second marginal cell about one-fifth as 

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

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

 ing, dense, most so on fork of second vein, narrowly linear, brown, black along 

 costa with a blue reflection. Halteres whitish, with brownish knobs. 



Legs moderate; femora white beneath nearly to tip, black above, knees nar- 

 rowly white; tibiae and tarsi brown, tibiae pale beneath, hind tarsi with very 

 narrow white rings at base and apex of each joint ; front and mid tarsi with the 

 first four joints narrowly white marked. Claw formula, 0.0-0.0-0.0. 



Length: Body about 3 mm.; wing 3,2 mm, 



Male. Proboscis slightly thickened toward apex, with a pale shade beneath in 

 the middle. Palpi exceeding the proboscis by more than the length of the last 

 joint; end of long joint and last two joints with numerous long black hairs, the 

 tip of long joint and penultimate slightly thickened; vestiture entirely 

 blackish above with bronzy and blue luster, beneath with pale shining scales. 

 Antenna plumose; last two joints long and slender, rugose, pilose, black, the 

 others shorter, slender, brownish, with black rings at insertions of hair-whorls ; 

 hairs long, dense, brown. Coloration similar to the female. Wings slightly 

 narrower than in the female, the stems of the fork-cells longer; vestiture less 

 abundant. Abdomen long, slender, depressed apically; dorsal bands broader, 

 not produced at middle, the white scales predominating on eighth segment; 

 lateral eiliation long, dense, pale brown. Claw formula, 1.1-1.1-0.0. 



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



Genitalia (plate 16, fig. 114) : Side-pieces three times as long as wide, uni- 

 form, curved, rounded at tip ; a rounded prominence at outer third bears three 

 rods, a large leaf -like appendage, a smaller appendage somewhat within, and a 

 seta. Clasp-filament slender, a little enlarged at base with a small terminal 

 claw. Harpes divided, inner limb stout and bearing a crown of spines, outer limb 

 blade-like and curved. Harpagones di^dded into several lamellae. Basal lobes 

 illy developed, each bearing three small setas. 



Larva, Stage IV (plate 97, fig. 320) . Head rounded, wider than long, promi- 

 nent laterally in region of eyes; antennae large, spicular, the tuft at outer 

 third, the part beyond it slender; both pairs of dorsal tufts long, in threes, 

 ante-antennal tuft multiple. Skin spicular; lateral abdominal hairs double on 



