APPLE INSECTS -^nUD^ AND FOLIAGE 



51 



about J of an inch lon^", to the smaller brandies (Fig. 52). 

 These dark brown, bark-colored cases are made lar<4-ely of silk, 

 particles of excrement and tlu^ 

 pubescence of the leaves. Turn- 

 ing around in its case, the 

 orange-colored cateri)illar witli 

 black head, thoracic shield and 

 legs, transforms in about a 

 month through a light brown 

 pupa to a pretty, little, dark 

 drab-colored Tineid moth (Fig. 

 53) with a wing expanse of 

 about J an inch. It emerges 



from the '' handh 



'ud of the 



Fig. 54. — Pistol-case- bearer, moth 

 resting on its empty ease. 



pistol (Fig. 54). On the basal 

 third of the front wings white 

 scales predominate in the fe- 

 males especially, the legs and antennae have alternating rings 

 of dark and white scales, and there is a conspicuous tuft of 

 scales on the basal joint of each antennae. The females glue 



their minute, pretty, cinnamon- 

 colored, inverted cup-like, ribbed 

 eggs to the surface of the leaves 

 (Fig. 55). The tiny caterpillars 

 hatch from these eggs in about a 

 wxek, or late in July, and eat little 

 holes in the leaves. They soon 

 construct of silk and excrement 

 little pistol-shaped cases to which 

 they build additions until about 

 September 1, when they begin to 

 migrate to the twigs and there 

 fasten their cases to the bark and hibernate until April. 

 Since 1877 this insect has been very injurious in apple or- 



FiG. 55. — Eggs of the pistol 

 case-bearer. Greatly enlarged. 



