222 



INSECTS AFFECTING WHEAT. 



when the Hessian Fly larvse are about half-grown : 

 or in ease no such brood develops in the volunteer 

 wheat, a few strips in the field may be seeded to 

 wheat a few weeks before the regular planting time, 

 and the flies will lay their eggs in these, which are 

 afterwards to be plowed under. Thus the main crop 

 of wheat will escape infestation. 



The Chinch Bug. 



Blissus leucopterus. 



The Chinch Bug and the Rocky Mountain Locust 

 have long been known as the arch enemies of West- 

 ern agriculture. They have each destroyed millions 

 of dollars worth of property, and have often caused 

 great destitution over large areas. The Chinch Bug 



ft 



I'k 



m 



i' 



f 



118. Chinch Bug: a, b. eggs; c, <>,/. young : g, nymph or 

 pupa; A, adult. Magnified. 



flourishes best at the South, but occasionally occurs 

 in destructive numbers as far north as New York 

 and Minnesota. Like other injurious insects it is 



