37 
or sometimes in the immature fruit. The larva from the second brood 
makes the little burrows in the bark in which the insect passes the 
winter. The peach twig-borer feeds on all stone fruits. 
THE BAGWORM. 
(Thyridopleryx ephemerxformisHsiw. — figs. 32 and 33.) 
The winter cases or bags of this insect, 1^ to 2 inches long, are often 
seen hanging from the branches of shade trees, particularly arbor- 
Fig. 32. — Thyridopteryx-epkemerzeformis. Cases; d, one cut open. (Howard.) 
vitae, locust, and basswood, but are not so common on fruit trees, 
The adult insect is a moth; the female wingiess; the male with four 
Fig. 33.— Thyridopleryx ephemerseformis: a, larva; 6, head of same; c, male pupa; d, female pupa, 
e, adult female; /, adult male— all enlarged. (Howard.) 
transparent wings and a black body. The female never leaves her 
case alive, but in the fall deposits her eggs therein, drops out and dies, 
