INSECTS INJURIOUS TO THE GRAINS AND GRASSES. G5 



fully known. The common Flesh-fly {SarcopJiaga car- 

 naria Linn.), Fig. 39, is also very destructive, though 

 largely a scavenger. 



Fig. 37.— Tachina-fly. {Exo- 

 rista leucanice Kirk). (After 

 Riley.) 



Fig. 38. — Tachina-fly. (E. 

 lidvirauda Riley). (After 

 Riley.) 



Fig. 39. — Common ¥\e^\i-^j {SareojyJiagn carnaria Linn.), a, larva; 

 6, pupa; c, fly. Hair-lines show natural size. (After Riley.) 



Fig. 40. — Various stages of a Blister-beetle {Epicauta vittaia). 



(After Riley.) 



But of all the insects attacking locusts, the Blister- 

 beetles, which, unfortunately, are often known to its as 

 very injurious to various garden cro^DS, are probably of the 



