THE LEPIDOPTERA 



279 



sufficiently so to conceal the body which is generally "pale-yellowish or 

 greenish, with a broad, dusky stripe along the back and a yellow stripe 

 along the sides; they are covered with whitish hairs which spring from 



Fig. 289. — Branch covered by web of the Fall Wcbworm. {Frum \. H. Agr. Exp. Sta. 



Bull. 139.) 



black and orange-yellow warts" (Packard). The head is black. The 

 larvae pupate in the ground. 



Where there are two generations the moths appear in June or even 

 earlier and the second generation moths develop early enough in the 

 fall for the larvae from their eggs to become full- 

 grown before the leaves drop. Where there is 

 but one generation the webs appear the last of 

 July and in August, and reach full size in 

 September. 



Control. — There are several ways by which 

 to check the ravages of this insect. When the 

 webs first appear they may be stripped off by hand and the then 

 small larvae crushed. Branches attacked may be cut off if the tree is 

 of sufficient size not to be marred in this way. Spraying all around 

 the tent with a stomach poison, standard formula, will poison the leaves 

 next to be brought within the web by its further enlargement, and thus 

 provide the caterpillars with poisoned food. 



Fig. 2 9 .—Full-grown 

 larva of the Fall Webworm, 

 natural size. {Original.) 



