THE INSECT WORLD. 235 



made. The larva hatches and the httle wound throuoh whicli 

 the egg was laid heals so completely that no trace ot it is visible 



Fig. 242. 



Work of the potato-stalk borer, Tricliobaris j-nutata, m potato-vines. 



in the fully developed fruit. When the nut is ripe and drops to 

 the ground the larva is full grown, and eats a round hole in the 



