INSECTS INJURIOUS TO VEGETATION 



37 



of the United States. The yellow eggs are laid in groups of 

 twenty to seventy-five on the undersurface of potato leaves. 



Fig. ig. — Potato beetle. Adult and young on plant, and adult enlarged. 

 (Photo by O'Kane.) 



The larva: which hatch from the eggs feed on the leaves until 

 they are full-grown, then they burrow into the ground, change into 



