CULEX CARAIBEUS 257 



Island of Santo Domingo, West Indies. 



Santo Domingo City, August G, 1905, larva in a flower-vase in hotel parlor 

 (A. Busek) ; Samara, September 26, 1905, larvae in a dirty water-course (A. 

 Busck). 



CULEX CARAIBEUS, new species. 

 Culex factor Dyar & Knab (in part), Journ. N. Y. Ent. Soc, xiv, 212, 1906. 

 Description of Female and Larva of Culex caraibeus (Male Unknown) : 



Female. Proboscis moderate, sabcylindrical, uniform, labellas conically 

 tapered; vestiture black, labellae paler, a paler shade in middle of shaft, particu- 

 larly beneath, but not forming a distinct ring; setae minute, curved, black, those 

 on labelliB more prominently outstanding. Palpi small, slender, one-fifth as 

 long as proboscis, black, with a few outstanding setae. Antennas with basal joints 

 somewhat shorter than apical ones, rugose, pilose, black ; tori subspherical, with 

 a cup-shaped apical excavation, luteous, blackish on inner side ; hairs of whorls 

 sparse, moderate, black. Clypeus rounded triangular, doubly excavated at base, 

 dark brown, nude. Eyes black. Occiput clothed dorsally with narrow, curved 

 sordid-whitish scales and many erect, forked black ones ; a patch of broader white 

 scales on the sides below, the eyes narrowly white-margined; a row of black 

 bristles along margins of eyes. 



Prothoracic lobes elliptical, remote dorsally, clothed with whitish scales and 

 black setje. Mesonotum brown, with two dorsal impressed darker lines, showing 

 faintly on anterior half; vestiture of hair-like, lustrous brown scales, not ob- 

 scuring the ground-color, bristles brown, numerous. Scutellum trilobate, 

 luteous, with pale-yellowish, narrow, curved scales, each lobe with a group of 

 black bristles, Postnotum elliptical, prominent, brownish luteous, nude. Pleurae 

 and coxffi pale greenish, with small patches of white scales and rows of small 

 brown bristles. 



Abdomen subcylindrical, truncated at tip; dorsal vestiture black, without 

 metallic reflection, segments, except the first, with transverse basal narrow 

 white bands, joined at sides to large triangular basal white patches, visible from 

 above on sixth and seventh segments ; a row of pale hairs at tips of segments ; 

 venter entirely creamy-white scaled. 



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

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

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

 scales blackish, the outstanding ones broadly linear, denser towards tip of wing. 

 Halteres whitish. 



Legs moderate, femora white beneath almost to tip ; knees dark ; tibiae and 

 tarsi brownish black, tips of tibia paler, all the legs with paler bronzy luster 

 beneath; hind tarsi with very small, indistinct brown rings on both ends of 

 joints, tips of last joints black. Claw formula,, 0.0-0.0-0.0. 



Length : Body about 3.5 mm. ; wing 3 mm. 



Larva, Stage IV (plate 101, fig. 333). Head somewhat wider than long, 

 bulging in the region of the eyes; antennae long, rather stout, spinulate, a 

 large tuft at outer third, the part beyond it slender, smooth; dorsal head- 

 hairs in threes, ante-antennal tufts multiple. Body with thorax finely spiculate ; 

 lateral abdominal hairs in twos after second segment ; lateral comb of eighth seg- 

 ment of many spines in a triangular patch. Air-tube about seven times as long 

 as wide, tapering slightly to tip, pecten vshort and reaching less than to basal 

 third ; four tufts beyond it, two-haired and rather short, the subapical one moved 

 out of line, and situated towards tip of tube; terminal hooks minute. Anal 

 segment longer than wide, ringed by the plate, which is spiculate on its posterior 

 border ; dorsal tuft of three hairs of different lengths on each side ; ventral brush 

 17 



