CHAPTER VIII 



INSECTS INJURIOUS TO SMALL GRAINS * 

 The Hessian Fly t 



The Hessian fly is much the most destructive of the insects 

 attacking wheat, to which its injury is practically confined; 

 for though it occasionally injures barley and rye, it has never 



FIG. 98. The Hessian fly (Mayetiola destructor): a, female fly; 6, flaxseed 

 stage or pupa; c, larva; d, head and breast-bone of same; e, pupa; 

 /, puparium; g, infested wheat-stem showing emergence of pupae and 

 adults. (After Marlatt, U. S. Dept. Agr.) 



been reared on other grains or grasses. Its name was received 

 from the fact that it was first noticed on Long Island in 



* Mayetiola destructor Say. Family Cecidomyiidoe. 



t See "The Principal Insect Enemies of Growing Wheat," C. L. Marlatt, 

 Farmers' Bulletin No. 132, U. S. Department of Agriculture. 



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