96 



INSECTS INJUKIOUS TO STAPLE CHOPS. 



and rye — are not often observed, or their injuries are 

 cliarged against the Hessian Fl)^, and not until they do 



Fig. 57. — Wheat straw Worm {Isosoma gr^mde Riley . n, ventral 

 view; h, side view of larva; c, antenua^; d, mandible; e, anal 

 segment, ventral view;/, adult female; g, forewing; h, hind- 

 wing; i, aborted wing. (After Riley.) 



Fig. ^%.—l80soma grande. Female of summer brood. (After Riley.) 



unusual and severe injury is the difference in the method 

 of their attack from that of the "fly " noticed. 



