268 American Midland Naturalist Monograph No. 3 



width of siphon; two 2 to 3-branched subdorsal tufts present; dorsal preapical 

 spine as long or longer than apical pecten tooth, recurved. Anal segment longer 

 than wide, completely ringed by the dorsal plate; lateral hah usually 3-branched; 

 dorsal brush consisting of a long lower caudal hair and an upper caudal tuft of 

 3 hairs on either side (one of the upper caudal hairs nearly as long as the lower 

 caudal); ventral brush well-developed, confined to the barred area; gills 4, 

 shorter than the segment, tapered. 



distribution. — Eastern United States from Florida northward to Michi- 

 gan and westward to Kansas. Southern States: Alabama (96); Arkansas (30) 

 Florida and Georgia (96); Kentucky (140); Louisiana and Mississippi (96) 

 Missouri (1); North Carolina (166); South Carolina and Tennessee (96) 

 Virginia (49). Other States: Delaware (106); Kansas (128); Michigan (88) 

 Oklahoma (159). 



BIONOMICS. — Adult specimens of C. peccator are frequently found in 

 diurnal shelters, particularly in damp situations. They are occasionally taken 

 in New Jersey type light traps. Since the females cannot be separated with 

 certainty from other members of the subgenus Melanoconion in this region, 

 nothing is known of their feeding habits. This is a summer species, but adults 

 have been collected from April to December in the extreme South (4th Sv. 

 C. Med. Lab. records, 1942-1944, unpublished) . Larvae occur in stream pools 

 and in marshy areas. 



CuLEx (Melanoconion) pilosus (Dyar and Knab) 



Mochlosivrax pilosus Dyar and Knab, 1906. Jour. N. Y. Ent. Soc, 14:223. 

 Culex pilosus King and Bradley, 1937. Ann. Ent. Soc. Amer., 30:353 (additional 

 synonymy given). 



ADULT FEMALE. — Small species. Head: Proboscis long, dark, slightly 

 swollen at tip; palpi very short, dark. Occiput principally clothed with broad 

 appressed scales, dark brown with bronze to metallic blue-green reflection on 

 antero-dorsal portion, gradually fading to dingy-white laterally; a small median 

 area of pale lanceolate scales present posteriorly; dark erect forked scales 

 numerous. Cibarial armature consisting of 3 teeth (122). Thorax: Integument 

 of scutum dark brown, clothed with fine dark bronzy-brown scales. Abdomen: 

 Tergites dark brown or black scaled dorsally with bronze to metallic blue-green 

 reflection and with basal white-scaled patches laterally (occasionally narrow 

 white basal bands present dorsally on some segments). Sternites each with a 

 white band basally, the band joining the white lateral tergal patches; dark api- 

 cally. Legs: All legs dark scaled with bronze to metallic blue-green reflection, 

 except for pale inner surfaces of femora. Wing: Scales all dark. Plume scales 

 narrow; squame scales broader, ligulate to ovate. 



ADULT MALE. — Coloration similar to that of female. TERMINALia (Fig. 

 150). Lobes of ninth tergite (IXT-L) widely separated, slender, finger-like, 

 about four times as long as broad, with tips slightly convergent; vestiture con- 

 sisting of three or four short setae distributed on each lobe in addition to 

 several small basal setae. Tenth sternite (X-S) crowned with a comb-like row 



