10 Farmers’ Bulletin 1217. 
green-bug problem, because the eradication and control of the pest 
rests to a very considerable degree with the growers themselves, as is 
shown by the exhaustive investigations already conducted by the 
department. 
Fig. 8.—Aphidius testaceipes ovipositing in the body of the spring grain-aphis. Hn- 
larged. (Webster.) 
Destroy volunteer grain during the summer and early fall. Do 
not depend upon the hazards of the weather to protect grain crops 
from the green-bug. 
Fic. 9.—Position of larva of Aphidius testaceipes in the body of the spring grain-aphis at 
the beginning of the change to a yellowish color. Much enlarged. (Webster and 
Phillips.) 
Obtain the cooperation of neighboring growers in putting such 
measures into effect, as individual efforts may be in vain. 
