12 MISSOURI AGRICULTURAL EXPERIMENT STATION BULLETIN 176 



pillar, while not primarily a pest of the orchard and nursery, is often a very 

 troublesome and destructive pest in the nursery or orchard. It passes the winter 

 in the egg stage in the larger bags suspended from twigs. In the spring the 

 eggs hatch and they begin feeding soon after trees come into foliage. Each 

 caterpillar makes for itself a bag or case as a protection and later it pupates in 

 this. Where abundant it will strip apple trees of their foliage. The adult male 

 moth develops wings, while the female remains within her protecting case 

 where late in the fall she deposits her eggs. 



CoNTROiv. The calyx spray for the codling moth will also control this 

 pest. In the nursery spray early in the spring so as to poison the young worms. 

 Hand picking of the bags in the fall after the foliage is off will also help con- 



FIG. 12. Apple-tree Leaf -roller; two 

 larvae slightly enlarged (After 

 Stedman) 



FiG. 13. Apple-tree Leaf -roller; pupa 

 slightly enlarged (After Stedman) 



FIG. 14. Apple-tree Leaf -roller; adults much enlarged (After Stedman) 



