ATTACKING THE LEAVES. 



2G7 



two, in the female. The body is black, crossed in the female 

 by two white bands, in the male by one only. The male 

 moth has the antennae elbowed and thickened near the middle, 

 in the female they are uniform and thread-like. 



Fia. 277. 



There are two broods of the insect during the summer. 

 The first moths, which have passed the winter in the chrysalis 

 state, appear early in June, and deposit their eggs singly on 

 the leaves of the vine, which are soon hatched, the young 

 worm at once manifesting its leaf-folding propensities by 

 turning down a small portion of the leaf on which it is placed 

 and living within the tube thus formed. As it increases in 

 size, a larger case is made, often the whole leaf being rolled 

 into a large cylinder, wider at one end than at the other, and 

 firmly fastened with stout silken threads. In this hiding- 

 place the little active wriggling creature lives in comparative 

 safety, issuing from it to feed on the surrounding foliage. It 

 is so very rapid in its movements, both backwards and for- 

 wards, that it frequently escapes detection by suddenly slipping 

 out of its case when disturbed and falling to the ground. 

 The length of the full-grown caterpillar is about three- 

 quarters of an inch ; the body is yellowish green at the sides, 

 a little darker above, glossy and semi-transparent, with a few 

 fine yellow hairs on each segment. The head is reddish 

 yellow, and the next segment behind it has a crescent-shaped 

 patch above of the same color; on the third segment there 

 are two or three black spots on each side, and on the twelfth 



