32 U.S. NATIONAL MUSEUM BULLETIN 2 79 



Prothorax usually with 2 setae on anterior lateral lobe and about 

 8 setae on posterior lateral lobe. Infraepisternal area usually with 1 

 seta; infraepimeral area with about 4 setae. 



Mesothorax with about 11 setae on lateral lobe. Infraepisternal 

 area usually without setae; infraepimeral area with about 6 setae. 



Metathorax with about 2 setae on anterior lateral lobe and about 

 1 1 setae on posterior lateral lobe. Infraepisternal area usually without 

 setae; infraepimeral area with about 6 setae. 



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

 transverse band of about 24 to 28 spinules, DL3 with single transverse 

 row of about 11 to 19 spinules. Segment 7 with transverse band of 

 about 6 to 12 spinules and about 17 small setae on DLl. DL2 with 

 transverse row of numerous setae. DL3 with transverse row of about 

 10 to 14 small setae. 



Abdomen (lateral aspect) with segments 1 to 8 usually with 1 to 2 

 setae on LLl ; LL2 with about 3 to 7 setae; LL3 with about 2 to 4 setae. 



Trox robinsoni Vaurie 



Trox robinsoni Vaurie, 1955, Bull. Amer. Mus. Nat. Hist., vol. 106, p. 47, 

 figs. 12, 13, 25P. 



Description based on the following material. Twenty-nine larvae 

 reared from adults collected under a bird carcass near Kerrville, Kerr 

 Co., Tex., September 12-13, 1964, by Larry J. Bottimer. 

 LI: head capsule width 1.45 to 1.55 mm.; 5 specimens. 

 LII: head capsule width 1.86 to 2.00 mm.; 7 specimens. 

 LIII: head capsule width 2.35 to 2.64 mm.; 16 specimens. 



Description of Third Stage Larva 



Figure 39 



Cranium deep red brown to brown, with about 4 to 8 long setae 

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

 if 3, then tliird is very short. Epipharynx with about 7 to 9 stout mar- 

 ginal 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 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. MaxiUa with lacinia 

 with 3 unci and about 14 to 18 stout marginal setae. 



Prothorax usually with about 1 to 2 setae on anterior lateral lobe 

 and usually with 1 seta on posterior lateral lobe. Infraepisternal and 

 infraepimeral areas usually with I long seta each. 



