112 American Midland Naturalist Monograph No. 3 



CULISETA (ClIMACURA) MELANURA (Coquillett) 



Culex rmlamirus Coquillett, 1902, Jour. N. Y. Ent. Soc, 10:193. 



ADULT FEMALE. — Medium sized species. Head: Proboscis very long, 

 slender, dark scaled; palpi short, dark. Occiput clothed with narrow yellowish 

 scales and numerous dark erect forked scales; a patch of broad whitish scales 

 present laterally. Thorax: Integument of scutum dark brown to reddish brown, 

 clothed with fine dark bronzy-brown scales, paler on prescutellar space. A few 

 dark spiracular bristles present; postspiracular bristles absent. Abdomen: Ter- 

 gites dark brown to black scaled, with bronze to purplish reflection, and with 

 small yellowish-white basal patches laterally, usually not visible from above; 

 faint narrow yellowish-white dorsal transverse bands sometimes present on 

 some segments. Venter primarily dingy-white to yellowish scaled, usually 

 blended with a few dark scales. Legs: Legs entirely dark scaled except for pale 

 inner surfaces of femora. Wing: Wing moderate in size with points of origin 

 of cross veins 3-4 and 4-5 from vein 4 separated by more than the length of 

 either cross vein; longitudinal veins densely clothed with dark slightly broad- 

 ened ligulate scales; a tuft of dark setae arising from base of subcosta on under 

 side of wing (Fig. 55D). 



ADULT MALE. — Coloration similar to that of female. Palpi long, the ter- 

 minal segments slender, cylindrical, bearing numerous long hairs. TERMINAlia 

 (Fig. 55C). Lobes of ninth tergite (IXT-L) only slightly raised, weakly 

 sclerotized, separated by the width of one lobe, each bearing several setae. 

 Tenth sternite (X-S) extending to near apex of basal lobe, heavily sclero- 

 tized, with two or three strong recurved teeth at tip. Phallosome (Ph) large, 

 less than twice as long as broad, subcylindrical (wider across apical third than 

 across base), open ventrally, closed and carinate dorsally beyond middle, 

 pointed at apex. Claspette absent. Basistyle (Bs) two and one-half times as 

 long as basal width, distinctly cone-shaped, rounded at apex, clothed with 

 numerous long setae; basal lobe (B-L) conical, appressed to basistyle, bearing 

 four or five stout spines apically and numerous smaller setae on sides; apical 

 lobe absent. Dististyle (Ds) two-thirds as long as basistyle, glabrous, slender, 

 a little broader basally than apically, terminating in a short, pointed claw 

 (Ds-C). 



LARVA. (Fig. 57). — Head broader than long. Antenna nearly as long as 

 head, slender, spinose; antennal tuft large, multiple, barbed, inserted on a pro- 

 jection at outer fourth of shaft and extending beyond tip. Head hairs: Prean- 

 tennal (A) multiple barbed; lower (B) long, single, sparsely barbed, extend- 

 ing well beyond anterior margin of head; upper (C) multiple, sparsely barbed, 

 about one-third as long as B; postclypeal (d) single, nearly as long as C; 

 sutural (e) and tran-sutural (f) double or triple; supraorbital long, single. 

 Upper lateral abdominal hairs multiple on segments I and II, double on III 

 to V, and usually single on VI; subdorsal hairs small on segments III to VII. 

 Comb of eighth segment of about 25 bar-like scales in a single row; individual 

 scale long, slender, pointed basally, rounded and fringed apically with sub- 

 equal spinules. Siphon slender, sides nearly parallel, 6 to 7 times as long as 



