36 



sapwood during the .summer and fall. It is quiescent during the 

 winter, but resumes feeding in the early spring, reaching full growth 

 by May or June. The caterpillar is then a little over 1 inch in 

 length, soft, and pale yellowish in color, with a shining, dark-brown 

 head. It transforms to a chrysalis within an elongate cocoon just 

 beneath or sometimes outside of the bark. The moths emerge in May 



Fig. 30. — lianmnoidea exitiosa: a, female; &, male; c, larva; d, t, female and male pupae; /, cocoon. 



(Marlatt.) 



or June. The female has dark-blue fore-wings; the male has clear 

 ones. It primarily attacks peach, but sometimes cherry and plum. 

 There is but one brood each year. 



THE PEACH TWIG-BORER. 



(Anarsia lineatella Zell. — fig 31. ) 



The presence of this insect in the winter is quite readilj^ known by 

 bits of frass attached to the bark, often at the crotches of branches or 



twigs. Each bit of frass covers 

 the entrance to a small burrow 

 lined with silk, within which the 

 young larva of this insect passes 

 the winter. It is now of a yellow- 

 ish color, with the head and thoracic 

 segments, as well as the last seg- 

 ment, almost black. Early in 

 spring, when the leaves are coming 

 out, the larviB abandon their bur- 

 rows and attack the tender leaf 

 shoots, boring into them from a 

 point a little below the apex, and 

 when one shoot commences to dry 

 the larva leaves it and attacks another. In about two weeks the larva 

 is full grown, and pupates in a slight open cocoon attached to the 

 bark or among the shriveled leaves. The tiny, grayish moth issues 

 in May. Two broods follow this, the larvae boring in the youns twiffs 



infested twig; 



Fig. 31. — Anarsia imeaiella 

 6, .same enlarged: c, larva in case, ri, larva en 

 larged. (Marlatt.) 



