LARVAL TAXONOMY OF THE TKOGINAE IN NORTH AMERICA 49 



with 4 sensory spots and about 14 to 18 setae dorsally; with 2 sensory 

 spots and 2 long setae ventrally. Maxilla with stipes bearing 1 to 3 

 setae on exterior surface. Maxillary stridulatory area with longitudinal 

 row of about 20 to 30 teeth. 



Prothorax with about 50 to 65 setae on lateral lobe. Infraepisternal 

 area with about 1 to 5 setae; infraepimeral area with about 8 to 12 

 setae. 



Mesothorax with about 30 to 50 setae on lateral lobe. Infraepisternal 

 area with to 2 setae ; infraepimeral area with about 15 to 21 setae. 



Metathorax with transverse row of about 10 to 14 spinules and 4 

 to 6 setae on smaller dorsal lobe (DL2). Anterior lateral lobe (LLl) 

 with about 10 to 20 setae. Posterior lateral lobe (LL2) with about 30 

 to 45 setae. Infraepisternal area with to 3 setae; infraepimeral area 

 with about 13 to 20 setae. 



Legs with each tibiotarsus with terminal whorl of 6 setae plus about 

 1 to 13 setae proximad of whorl. 



Abdomen with transverse row of about 8 to 12 spinules and about 

 25 to 40 setae on DLl of segment 7. 



Omorgus scutellaris (Say) 



Trox scutellaris Say, 1823, Journ. Acad. Nat. Sci. Philadelphia, vol. 3, p. 238. 



Description based on the following material. Eight larvae reared from 

 1 female collected in soil under a rabbit carcass 1 mile west of Valentine, 

 Jeff Davis Co., Tex., June 26, 1964, by David R. Smith and Charles W. 

 Baker. One larva reared from 1 female collected under a buzzard 

 carcass 1 mile west of Valentine, Jeff Davis Co., Tex., June 26, 1964, 

 by David R. Smith and Charles W. Baker. Three larvae reared from 

 an aggregation of adults collected by David R. Smith and Charles W. 

 Baker as follows: at a cow carcass about 18 miles south of Rodeo, 

 Hildago Co., N. Mex., July 25, 1964; at a buzzard carcass about 

 5.0 miles north of Rodeo, Hildago Co., N. Mex., July 24, 1964; at a 

 cow carcass about 6.0 miles east of Portal, Cochise Co., Ariz., July 25, 

 1964. 



LII: head capsule width 4.23 to 4.41 mm.; 2 specimens. 

 LIII: head capsule width 5.04 to 5.85 mm.; 10 specimens. 



Description of Third Stage Larva 

 Figures 9, 48, 50, and 51 



Cranium dark red bro\vn to black, with 1 or 2 dorsal epicranial 

 setae on each side and about 18 to 28 setae near each antenna. Each 

 anterior angle of frons with about 8 to 10 setae. Postclypeus with 



