LARVAL TAXONOMY OF THE TROGINAE IN NORTH AMERICA 27 



Metathorax usually without setae on anterior lateral lobe, with 

 about 3 to 5 setae on posterior lateral lobe. Infraepisternal area usually 

 without setae; infraepimcral area usually with 1 seta. 



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

 single transverse row of about 10 to 14 spinules, DL3 with transverse 

 row of about 4 to 8 spinules. Segment 7 with transverse row of about 

 10 to 12 spinules on DLl. DL2 with diffuse transverse row of spiniform 

 setae and setae. DL3 with or without a few very small spiniform setae. 



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

 on LLl ; LL2 with about 3 setae; LL3 usually with 1 seta. 



Trox aequalis Say 



Trox aequalis Say, 1831, New species of . . . insects found . . . chiefly in 

 Louisiana, p. 5. 



Description based on the following material. Fifteen larvae with 

 3 associated adults collected in a buzzard's nest on Jackson's Island, 

 Md., July 13, 1912, by Carnochan and Barber. Nineteen larvae 

 with 1 associated adult collected in a buzzard's nest on Jackson's 

 Island, Md., June, 1919, by Carnochan and Barber. 

 Loaned by U.S. National Museum, 

 LI : head capsule width 0.86 to 0.90 mm. ; 2 specimens. 

 LI I: head capsule width 1.17 to 1.31 mm.; 12 specimens. 

 LIII: head capsule width 1.64 to 1.86 mm.; 20 specimens. 



Description of Third Stage Larva 



Figures 6 and 54 



Cranium light orange to light orange brown, with numerous prom- 

 inent pits. Median epicranial setae usually absent. With about 5 long 

 setae near base of each antenna. Exterior and anterior setae on frons 

 very short. Postclypeus usually with 1 long seta and 1 short seta on 

 each side. Epipharynx usually with 4 marginal setae on each side 

 of corypha. Sensory area of haptomerum usually with 4 smaller 

 sensory spots distad of 2 larger, setiferous sensory spots. Haptomerum 

 also usually with 1 seta on each side anterolaterad of sensory area, 

 seta on right side being only slightly removed from anterior border of 

 epipharynx. Anterior region of pedium usually with 2 sensory spots 

 distad of slightly arching, transverse row of about 10 sensory spots. 

 Hypopharynx with distal area with 2 sensory spots distad of trans- 

 verse row of about 10 sensory spots. Maxilla with lacinia with 3 unci 

 and about 10 marginal setae. 



Prothorax usually with 1 seta on anterior and posterior lateral lobes. 

 Infraepisternal and infraepimcral areas usually with 1 seta each. 



2S5-935— 68 3 



