BULLETIN 192. 



INSECTS INJURIOUS TO THE VINE. 



131 



This insect occurs, apparently, throughout the United States. It is 

 very common in the Eastern and Middle Western States, but there is 



FIG. 19. Larva of grape leaf-roller. 



a striking difference in habits between the insect there and what is 

 considered the same species here. In the East, the leaf is simply folded 



FIG. 20. Moth of grape leaf-roller, enlarged. 



over on the upper surface and the edges sewed down by strands of silk. 

 There the larva feeds by eating off the upper surface of the leaf, thus 

 skeletonizing it. Here the leaf is very distinctly rolled and instead of 



