LARVAL TAXONOMY OF THE TROGINAE IN NORTH AMERICA 47 



Description of Third Stage Larva 

 Figure 26 



Cranium dark red brown, with about 16 to 24 setae near each 

 antenna. Each anterior angle of frons with about 7 to 1 1 setae. Epi- 

 pharynx with about 18 to 25 stout setae near anterior border on each 

 side of corypha. Paria with about 10 to 25 anterior setae and about 

 7 to 12 stouter posterior setae on each side. Glossa with 4 sensory spots 

 and about 18 to 20 setae dorsally; with 2 sensory spots and 2 long setae 

 ventrally. Maxilla with stipes bearing 1 to 4 setae on exterior surface. 

 Maxillary stridulatory area with longitudinal row of about 20 to 30 

 stridulatory teeth. Lacinia with 1 or 2 exterior setae. 



Prothorax with about 65 to 80 setae on lateral lobe. Infraepisternal 

 area with about 6 to 10 setae; infraepimeral area with about 15 to 

 20 setae. 



Mesothorax with about 50 to 85 setae on lateral lobe. Infraepisternal 

 area usually with 1 to 4 setae; infraepimeral area with about 28 to 

 40 setae. 



Metathorax with transverse row of about 9 to 15 spinules and 8 to 

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

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

 55 to 75 setae. Infraepisternal area with about 4 to 7 setae; infraepimeral 

 area with about 30 to 44 setae. 



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

 12 to 16 setae proximad of whorl. 



Abdomen with transverse row of about 13 to 20 spinules and 20 to 

 35 setae on DLl of segment 7. 



Omorgus punctatus (Germar) 



Trox punctatus Germar, 1824, Insectorum species novae, vol. I, p. 113. 



Description based on the following material. Six larvae reared from 

 2 females collected at cow carcasses within 10 miles of Rodeo, Hildago 

 Co., N. Mex., July 24-26, 1964, by David R. Smith and Charles W. 

 Baker. 

 LIII: head capsule width 3.69 to 4.04 mm.; 6 specimens. 



Description oj Third Stage Larva 

 Figure 27 



Cranium dark red brown to black, with about 15 to 20 setae near 

 each antenna. Each anterior angle of frons with about 7 to 9 setae. 



