ATTACKING THE LEAVES. 



255 



their surface, while above and below this band the color is 

 almost black, the hinder margin being fringed with white. 

 On the body there is a line of white on each side, extending 



Fig. 2G4. 



from the head to the base of the thorax, where it unites with 

 another line of the same color, which extends down the middle, 

 and, dividing, sends a branch to each side. The abdomen is 



Fig. 2G.5. 



greenish olive spotted with white and black ; the wings, when 

 expanded, measure about three and a half inches across. 



The larva is found occasionally feeding on the leaves of the 

 grape-vine, but more commonly on jiurslane; it feeds also on 

 turnip, buckwheat, and apj)le leaves. It is very variable in 

 color. Tiie most common form is that shown in Fig. 2G5, 

 where the body is yellowish green, with a row of prominent 



