LEPIDOPTERA. 
36l 
ally the larvae soon after hatching migrate down the branch 
towards the trunk of the tree until a fork of considerable 
size is reached before they begin their tent. This is neces¬ 
sary* as the completed tent often measures two feet or more 
in length. 1 he larvae leave the nest daily in order to feed ; 
and spin a silken thread wherever they go. The larvae be- 
Fig. 442 .—Clisiocantpa americana , eggs, tent, larva, cocoons, and adult. 
come full grown early in June ; one of them is represented 
on a partially-eaten leaf in the figure. When ready to 
transform they leave the trees and make their cocoons in 
some sheltered place. These cocoons are quite peculiar in 
appearance, having a yellowish white powder mixed with 
the silk. The pupa state lasts about three weeks. 
The easiest way to fight this pest is to destroy the webs 
containing the larvae as soon as they appear in the spring. 
This should be done early in the morning, or late in the 
