THE LOCUST OR SHORT-HORNED GRASSHOPPER 351 



female clasps itself to the body of the female grasshopper until 



Fig. 173. — Insect enemies of locusts. 



To the left, egg-masses of locusts (c/. Fig. 186 B) are shown; fo the right, larvae of 

 blister beetles (rf. Fig. 197, p. 38.3) and of bee-Pies that were found in the distorted remnants 

 of the egg-masses stiown as larger bodies. (From Farmers' Bulletin No. ti91, U. S. Dept. 

 Agr.) 



the latter lays her eggs. As the grasshopper digs the hole (cf. Fig. 



18G), the parasite thrusts her 



long abdomen into the opening 



and lays eggs that hatch into 



parasites which enter the eggs 



of the grasshopper and develop 



at their expense. Likewise, 



the adult grasshoppers are 



destroyed in large numbers by 



the larvae of other parasitic 



insects. These larvae which 



may be found developing 



within the body cavity of the 



adult grasshoppers are the 



young of certain parasitic 



flies (cf. Fig. 198 A, p. 385) 



that lay their eggs upon the 



bodies or wings. The maggot which hatches from such an 



Fig. 174. — Young locust stung by a 

 wasp, Priononyx atrata (cf. Figs. 201 

 and 202, p. 388), and on which a 

 parasitic fly, Sarcophaga kellyi (cf. Fig. 

 198, p. 385), afterwards deposited 



an egg. 

 (From Bulletin No. 293, U. S. Dept. Agr.) 



