ELEMENTARY ENTOMOLOGY 



Adults. The hoppers become full grown about the first of July. 

 The adult is about one and one half inches long, its wings expand 

 two and one half inches, and it is of a bright yellowish-green color. 



FIG. 70. The differential locust. (Enlarged) 

 (Authors' illustration, United States Department of Agriculture) 



The head and thorax are olive-brown, and the fore-wings are of 

 much the same color, without other markings than a brownish 

 shade at the base ; the hind-wings are tinged with green ; the 



hind thighs are bright 

 yellow, especially below, 

 with four black marks ; 

 the hind shanks are yel- 

 low with black spines 

 and a ring of the same 

 color near the base. The 

 adults at once attack any 

 crops available, often 

 finishing the destruc- 

 tion of those injured 

 by them as nymphs, but 

 in a few days their ap- 

 petites seem to become 

 somewhat appeased and 

 they commence to mate 

 and to wander in search 

 FIG. 71. Grasshopper ovipositing in a stump * suitable places lor 

 (Photograph by Weed) la Y m g the e gg 8 ' 



Egg laying. Rela- 

 tively few eggs are laid in cultivated ground, the favorite places 

 being neglected fields grown up in grass and weeds, the edges of 



