Bui. 261 , U. S. Dept. of Agriculture. 
Plate II. 
The American Plum Borer. 
a, Adult, about twice natural size; 6, winter cocoon opened to show larva, enlarged about one- 
half; c, mass of winter cocoons embedded in frass and silk under scale of cherry bark; a, 
characteristic resting posture of adult; e, eggs, about natural size; /, cocoon opened to expose 
pupa, about twice natural size. (Original.) 
