Bui. 1137, U. S. Dept. of Agriculture. 
PLATE III 
Wheat Plants Infested by the Hessian Fly Compared with an 
Uninfested Plant. 
A, B, and'C, Spring-wheat plants infested by the Hessian fly; D, healthy plant of the same 
age for comparison. The infested plants aire much dwarfed and show the same dark-green 
color in comparison with the healthy plant as is shown in Plate II, D and E. E, "Winter- 
wheat plants infested by the Hessian fly, showing larvae (1) and puparia (2) (flaxseeds) 
of the insect. The leaf sheaths have been stripped away. 
