HESSIAN FLY. 



Male, inagnifisd. 



Xatural Size. 



Mag. I^rva 



^. 



i 



Natural Size. 



StalK with insect 

 in flaxseed state. 



Female magnified, 



WHEAT MIDGE 



/ \ 



Male magnifiei, 



-Afegnified I.arva. 



Nat Size. 



Wheal as iajsaed. 



Female, magnified. 



Magnified Larva, 



JOINT WORM 



«^'"^*-T^"- 



IS© 



Magnified Pupa. 



Injured Stalk and Cells. 



Female. 



