116 American Midland Naturalist Monograph No. 3 



ADULT MALE. — Coloration similar to that of female. TERMINAlia. The 

 male terminaha of this species appears to be indistinguishable from that of 

 O. signijera (Fig. 59C). 



LARVA. (Fig. 58). — Head shghtly broader than long. Antenna less than 

 half as long as head, smooth; antennal tuft multiple, barbed, inserted at basal 

 fourth of shaft, short. Head hairs: Preantennal (A) multiple, barbed, nearly 

 as large as upper (C) ; lower (B) and upper (C) multiple, barbed, extending 

 to or beyond the preclypeus; postclypeal (d) multiple, barbed, shorter than 

 upper (C) ; sutural (e) long, single; trans-sutural (f ) large, multiple, barbed; 

 supraorbital single or double, lightly barbed; sub-basal conspicuous, 7 to 11- 

 branched, barbed. Upper lateral abdominal hairs long, 2 to 3-branched. Abdom- 

 inal segment VI to VIII without dorsal sclerotized plates. Comb of eighth 

 segment consisting of two rows of thorn-shaped scales, the anterior row with 

 about 14 to 17 short scales and the posterior row with about 9 to 11 long scales 

 (scales of anterior row become longer medially and overlap the bases of those 

 of the posterior row) ; individual scale long, pointed and fringed on basal half 

 with small spines (small scales on ventral portion of anterior row are often 

 fringed apically with subequal spines) ; subsiphonal tuft small, barbed, 3 to 5- 

 branched. Siphon about two to two and one-half times as long as basal width; 

 pecten absent; subventral tuft with 3 to 5 branches rarely longer than the width 

 of the siphon, barbed, inserted at basal third of siphon. Anal segment longer 

 than wide, dorsal plate fading ventrally and not meeting on midventral line; 

 a small linear sclerotized area near base of segment; lateral hair 2 to 3- 

 branched; dorsal brush consisting of a long lower caudal hair and a shorter 

 multiple upper caudal tuft on either side; ventral brush well developed, con- 

 fined to the barred area; gills 4, blunt, shorter than the segment, dorsal pair 

 longer than the ventral pair. 



distribution.! — Eastern and central United States. Southern States: Ala- 

 bama (171); Florida (35); Georgia (4th Sv. C. Med. Lab. records, 1945, 

 unpublished); Louisiana (Hathaway, 1944, unpublished); Mississippi (125); 

 Missouri (70); North Carolina (166); Virginia (50). Other States: Kansas 

 (128); Nebraska (129); New York (116); Texas (141). 



bionomics. — Nothing is known of the habits of the adults of this species. 

 It breeds in rot cavities of trees and occasionally in artificial containers. The 

 larvae are usually found associated with the larvae of O. signifera. 



Orthopodomyia signifera (Coquillett) 



Culex signifer Coquillett, 1896, Can. Ent. 28:43. 



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

 with black and white scales, the white scales arranged so as to form longitudinal 

 striae dorsally. Palpi about one-third as long as proboscis, dark scaled, streaked 

 with white scales dorsally. Occiput clothed dorsally with numerous narrow 

 white scales and long dark erect forked scales; eye margins and lateral portions 

 of occiput white scaled. Thorax: Integument of scutum dark brown, clothed 



1 The following state records are based on adult specimens: Georgia, Florida, 

 Kansas, Nebraska, and Texas. 



