APPLE INSECTS — BUDS AND FOLIAGE 



03 



Fig. 65. — Larva of the fruit-tree leaf-roller be- 

 ginning its nest on an apple leaf. Knight photo. 



stage. The caterpillars hatch about May 1, and enter the 

 opening buds, where they roll and fasten the leaves loosely 

 together with silken threads into a nest within which they 

 feed (Figs. 65 and 

 66). After the fruits 

 set, they are often in- 

 cluded in the nests 

 and ruined by the cat- 

 erpillars eating large 

 irregular holes in 

 them (Fig. 67). The 

 caterpillars get their 

 growth in 2 or 3 

 weeks, and are then 

 about f of an inch 

 long, light green in 

 color with the head, 

 legs and thoracic shield varying from brown to black. About ten 

 days are spent as a brown pupa (Fig. 68) in a delicate silken web 

 or cocoon in the nest early in June. The moths emerge, and 



soon lay the peculiar 

 patches of eggs on 

 the bark, thus com- 

 pleting the life-cycle 

 of the single annual 

 generation of this 

 leaf-roller. The 

 pretty little moths, 

 measuring about f of 

 an inch across the 

 expanded wings, vary 

 considerably in coloring and markings (Fig. 69). The front 

 wings are rust-brown in color, marked with bands and spots of 

 very pale yellow. 



Fig. 66. — Apple leaf rolled by the fruit-tree 

 leaf-roller. Knight photo. 



