LARVAL TAXONOMY OF THE TROGINAE IN NORTH AMERICA 33 



Mesothorax with about 1 3 to 1 7 setae on lateral lobe. Infraepisternal 

 area with to about 3 very small setae; infraepimeral area with 

 about 3 to 5 long setae. 



Metathorax usually without setae on anterior lateral lobe, sometimes 

 with 1 seta. With about 5 to 7 setae on posterior lateral lobe. Infra- 

 episternal area with about 1 to 3 very small setae, infraepimeral area 

 with about 2 to 4 long setae. 



Abdomen (dorsal aspect) with DLl of segments 1 through 4 with 

 transverse band of about 20 to 31 spinules, DL3 with transverse row 

 of about 6 to 12 spinules. Segment 7 with transverse band of about 24 

 to 32 spinules on DLl. DL2 with about 4 to 5 scattered, small spinules 

 plus row of setae. DL3 with about 2 to 5 small setae. 



Abdomen (lateral aspect) with segments 1 to 8 usually with 1 seta 

 on LLl; with 2 to 5 setae on LL2; with 1 to 2 setae on LL3. 



Trox pUcatus Robinson 



Trox {Trox) pHcatus Robinson, 1940, Trans. Amer. Ent. Soc, vol. 66, p. 153, 

 pi. 4, fig. 10. 



Description based on the following material. Forty-seven larvae 

 reared from adults collected at lights at the Southwest Research 

 Station, Cochise Co., Ariz., July 4-8, 1963, by Noel McFarland. Ten 

 larvae collected under a fawn carcass about 3.0 miles northwest of 

 McDonald Observatory, JefF Davis Co., Tex., June 27, 1964, by 

 David R. Smith and Charles W. Baker. 

 LI: head capsule width 1.27 to 1.40 mm.; 22 specimens. 

 LII: head capsule width 1.73 to 1.93 mm.; 11 specimens. 

 LIII: head capsule width 2.26 to 2.60 mm.; 24 specimens. 



Description of Third Stage Larva 



Cranium red brown to dark brown, with about 6 to 8 long setae 

 near each antenna. Postclypeus with 2 or 3 setae on each side, if 3, 

 then third very small. Epipharynx with about 6 to 8 stout marginal 

 setae on each side of corypha. Sensory area of haptomerum usually 

 with 2 smaller sensory spots distad of 2 larger, setiferous sensory spots. 

 Haptomerum also usually with 2 setae on each side caudolaterad of 

 sensory area. Anterior region of pedium usually with 4 sensory spots 

 distad of slightly arching transverse row of about 12 to 14 sensory 

 spots. Hypopharynx with smaller distal area usually with 2 sensory 

 spots distad of transverse row of about 12 sensory spots. Maxilla with 

 lacinia with 3 unci and about 14 to 16 marginal setae. 



Prothorax with about 1 to 3 setae on anterior lateral lobe and about 

 1 to 2 setae on posterior lateral lobe. Infraepisternal area usually with 

 1 seta; infraepimeral area usually with 2 setae. 



