252 MOSQUITOES OF NORTH AMEEICA 



bands, broader than in the female, the eighth segment nearly entirely white-scaled; 

 venter light-scaled, with apical dark bands, lateral margins of the abdomen with 

 numerous long pale cilia; tarsi marked as in the female. Length, 5 mm. 



One hundred and seventeen specimens, Cordoba, Mexico, bred from larvae in 

 puddles along the Rio San Antonio. (F. Knab.) 



Type Cat. No. 11968. U. S. N. M. 



Description of Female, Male, and Larva of Culex pinarocampa: 



Female. Proboscis moderate, uniform, labellifi conically tapered ; vestiture 

 black, a long patch of pale scales beneath near the middle ; labellge pale ; setsb 

 small, curved, black, those on labellae more prominently outstanding. Palpi 

 short, about one-fifth the length of the proboscis, clothed with blackish scales ; 

 some rather bristly setas. Antennae with the joints subequal, rugose, pilose, 

 black, second joint slightly enlarged; hairs of whorls short, sparse; tori sub- 

 spherical, with a cup-shaped apical excavation, brownish luteous, dark on inner 

 side. Clypeus rounded triangular, blackish brown, nude. Occiput dark brown, 

 clothed with narrow, curved scales on the vertex, flat ones on the sides, pale 

 yellowish brown, those at the sides and narrowly along margin of eyes white; 

 many erect, brown, forked scales on the nape, denser on sides; setae along 

 margin of eyes moderate, black. Eyes black. 



Prothoracic lobes elliptical, remote dorsally, brown, clothed with narrow, 

 curved white scales and many black setse. Mesonotum dark brown, with two 

 narrow impressed bare lines dorsally ; vestiture of narrow, curved, dark bronzy- 

 brown scales, some pale brassy ones along lateral and anterior margins, around 

 antescutellar space, and in a pair of subdorsal spots over roots of wings ; bristles 

 rather coarse and abundant. Scutellum trilobate, pale brown, clothed with 

 narrow, curved, pale-brassy scales, each lobe with a group of coarse brown 

 bristles. Postnotum elliptical, prominent, brown, nude, shining. Pleurae brown, 

 with patches of flat white scales and rows of short brown bristles ; coxje luteous, 

 some white and brownish scales on anterior pair. 



Abdomen subcylindrical, depressed, truncate posteriorly; dorsal vestiture of 

 dull-black scales, the segments, except the first, with narrow basal white bands, 

 enlarged into triangular patches at the sides ; venter yellowish-white scaled, the 

 last three segments with apical dark bands. 



Wings moderate, hyaline; petiole of second marginal cell less than half the 

 length of its cell, that of second posterior cell slightly shorter than its cell ; basal 

 cross-vein a little more than its own length distant from anterior cross-vein ; 

 scales brown, those on costa darker with a bluish reflection, the outstanding 

 ones linear, much denser on fork of second vein. Halteres pale, with brownish 

 knobs. 



Legs moderate; femora black-scaled, whitish scaled beneath nearly to tip, 

 knees yellowish-white scaled ; tibiae black-scaled, pale at bases and apices, with 

 a line of pale scales on inner side; tarsi with all the joints yellowish-white 

 scaled at bases and apices, broader on hind legs than on other two pairs, last 

 joint of hind tarsi entirely white, that of front and mid tarsi appearing entirely 

 pale in some lights, in others bronzy brown. Claw formula, 0.0-0.0-0.0. 



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



Male. Proboscis straight, uniform, black scaled, with a rather broad whitish 

 ring beyond the middle. Palpi exceeding the proboscis by more than the length 

 of last joint, black scaled, with bronzy luster ; long joint with a narrow pale ring 

 at basal third ; outer third of long joint and last two joints with numerous long 

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

 black, the others short, whitish, narrowly ringed with black at insertions of hair- 

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

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



