94 



INSECTS INJURIOUS TO THE APPLE. 



Tig. 92. 



Leaf-crumpler, the young of which appear late in the sum- 

 mer and attain about one-third of their growth before winter 



sets in. After construct- 

 ing their places of abode, 

 they remain in them all 

 winter in a torpid state. 

 Fig. 93 represents one of 

 these cases well covered 

 with withered leaves. As 

 soon as the warmth of a 

 spring sun causes the buds 

 to expand, the caterpillar 

 resumes its activity, and, 

 leaving its case in search 

 of food, — for which pur- 

 pose it usually chooses 

 the night-time, — it draws 

 the opening leaves towards 

 its case, so as to secure a 

 safe retreat should danger threaten, and, fastening them by 



threads of silk, enjoys its meals 

 in comparative safety. Its length, 

 when full grown, is about six-tenths 

 of an inch, the body tapering 

 slightly towards the hinder ex- 

 tremity. The head is dark red- 

 dish brown, and the body a dark, 

 dull greenish brown ; the first seg- 

 ment has a horny plate at the top, 

 and a flattened blackish prominence 

 on each side, below the plate; on 

 each of the other segments there are 

 several small blackish dots, from 

 every one of which there arises a 

 single brown hair. At c, Fig. 92, the head and anterior seg- 

 ments of this caterpillar are shown. 



PiQ. 93. 



