14 



BULLETIN 967, U. S. DEPARTMENT OF AGRICULTURE. 



COAISCTATE LAEVA. 



Length of coarctate larva (tig. 15), 7.45 mm.; width. 4-08 mm.; 28 specimens 

 varied in length from 6.25 to 9 mm. and in width from 3.25 to 5 mm. Shape 

 much more robust than that of the coarctate larva of any other species thus far 



Fig. 15. 



-The gray blister beetle (Epicauta cinerca) : 

 larva ; l>, third larva ; c, pupa. 



Scarabaeidoid 



secured, being almost straight longitudinally on the venter and without the 

 angular lateral ridges, thus leaving them almost circular in abdominal cross 

 section ; color a rich reddish brown, darker than any other species with which 

 the writer has worked. 



PrPA. 



The single pupa (fig. 16, c) of this species 

 which was measured had a length of 12 mm. 



a h 



Fig. 16. — Epicauta cinerea: a, Coarctate 

 larva, lateral view ; 6, coarctate larva, 

 ventral view. 



Fig. 



17. — Epicauta sericahs, 

 Enlarged. 



Adult. 



and a width of 4 mm. In shape, color, and general appearance it resembles 

 the pupa of Afacrobasis immaciilata. but is not so large. 



Epicauta sericaxs Lec. 



Adult. 



Of 29 adult specimens of Epicauta sericans (fig. 17) the variation in length 

 was from 9.5 to 13 mm., with an average of 10.8 mm. ; color, light reddish brown 

 through yellow and gray to almost silvery ; antennae reaching to the elytra, the 

 segments except the second being nearly as broad as long. The second segment 

 is nearly twice as long as thick ; sides of elytra nearly parallel. 



