INSECTS INJURIOUS TO CORN. 



ir. 



brood of larva? feed on the old stalks, tunneling them 

 between the second joint and the ground, and become 

 full-grown about harvest-time, when they go into winter 



— v.^ 



r^- 



FiG. 81. — Work of the larger Coru Stalk-borer, a, general appear- 

 ance of stalk infested by the early o;eneration of borers; h, same 

 cut open to sll0^v pupa and laryal b^rro^y. (After Howard, 

 U. S. Dept. Agr.) 



quarters as alread}^ described. " The damage done by the 

 second generation consists largely in weakening the stalk 

 so that it is readily blown to the ground, whereas damage 



