13 



Fig. 6. Work of bud-worm among opening leaves. 



Late in summer or early in autumn the half-grown caterpillars 

 desert the leaves and crawl upon the twigs, where they form 

 little silken cases, generally near the buds or in creases in the 

 bark. (Fig. 7.) In these they remain throughout the winter. The 

 following spring they emerge to feed upon the opening leaves. 

 They again make tubes, which serve as protective cases. After 

 feeding six or seven weeks they become full-grown : then they 

 form silken cocoons, generally in a rolled leaf or between two 

 leaves, in which they change to pupae, to emerge a short time 

 later as moths. 



The full-grown larvae are cinnamon brown in color with the 

 head, legs, and shield behind dead black. They are about 

 half an inch long and of the general form shown in Fig. 8, c. 



