INSECTS INJURIOUS TO WHEAT. 



91 



remain dormant over winter, bnt evidently commence 

 feeding again very early in the spring, a wheat-field having 

 shown the effects of their injuries from February first to 



Fig. 54. — A Crane-fly (Tipula Jiebes Loew). a, larva; h, pupa; c, 

 male adult. (After Weed.) 



April first. The larvae become full-grown from the latter 

 part of April until the middle of May, depending upon 

 the species and season. The full-grown maggots are about 

 an inch long, of a dirty-grayish color, and of a tough 



