CULEX JUBILATOE 273 



Sixteen specimens, Taboga Island, Panama (A. H. Jennings, collector), bred from 

 larvae in water in old tubs in a pasture near the bathing beach. 



Ti/pe. No. 10916, U. S. National Museum. 



The larva is very close to that of Culex carmodyw Dyar & Knab, but has the pecten 

 of the air-tube longer. 



Desceiption of Female, Male, and Larva of Culex jubilator: 



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

 vestiture brownish black, darker towards tip, labellae pale, with short outstand- 

 ing setae. Palpi short, one-sixth as long as proboscis, dark brown. Antennae 

 rather long, the 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, clothed with narrow, curved pale- 

 brown scales and black bristles. Mesonotum blackish brown, clothed with narrow, 

 curved golden-brown scales, somewhat more yellowish on anterior edge and 

 around ante-scutellar space; bristles long and black. Scutellum trilobate, 

 clothed with narrow, curved pale-yellowish scales, each lobe with a tuft of black 

 bristles. Postnotum elliptical, prominent, dark brown, nude. Pleurae gray, 

 coxffi 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 segmental basal median triangular white spots, those on terminal 

 segments narrow, resembling bands; a row of lateral basal triangular white 

 spots; first segment entirely dark scaled above; venter whitish scaled, tips of 

 basal segments blacldsh. 



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 more than its own length from anterior cross-vein ; scales of veins out- 

 standing, dense, especially on forks of second and fourth veins, narrowly linear, 

 brown, those on costa black with a blue reflection. Halteres whitish, with 

 brownish knobs. 



Legs moderate, the femora white beneath nearly to tip, black above, knees 

 white ; tibiae and tarsi black, tibise whitish beneath, hind tarsi with very narrow 

 white rings at base and apex of each joint ; mid tarsi without rings at end of 

 fourth and on fifth joints ; fore tarsi unhanded. Claw formula, 0.0-0.0-0.0, 



Length : Body about 2.5 mm. ; wing 3 mm. 



Male. Palpi exceeding the proboscis by more than length of last joint, end 

 of long joint and the last two joints with numerous long black hairs, the penulti- 

 mate slightly thickened ; vestiture uniformly bronzy brown. Antennae plumose ; 

 last two joints long and slender, rugose, pilose, black, the others short, pale, with 

 black rings at insertions of hair whorls; hairs long, dense, black. Coloration 

 similar to the female. Wings narrower than in the female, the stems of the 

 fork-cells longer, vestiture less abundant. Abdomen elongate, subcylindrical 

 and slender on basal half, depressed and laterally expanded towards apex ; the 

 dorsal white spots large and almost forming bands on third, fourth, and fifth 

 segments, obsolete on seventh, eighth segment wholly white-scaled ; lateral cilia- 

 tion long, fine, pale yellowish. Claw formula, 1.1-1.1-0.0. 



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



Genitalia (plate 14, fig. 100) : Side-pieces over twice as long as wide, slender, 

 conically tapered at base and apex, a slight prominence at outer fourth, bearing 

 three rods Avith hooked tips, a large leaf-like appendage, a small expanded 



18 



