Bui. 243, U. S. Dept. of Agriculture. 



Plate II. 



Fig. 1. — Showing stalks of bcctledcilled sugar-pine cones after the cones have fallen from the 

 tree: a. Entrance holes, showing small pitch tube made by beetle. FIG. 2. — A beetle- 

 attacked sngar-pine cone opened to show tunnel and egg gallery of cone beetle: a, 

 Kntrace; b, egg gallery; c, extension of egg gallery to surface where adult emerges. 

 Fig. 3. — Blighted sugar-pine cone opened to show developing broods of cone beetle. 

 Larvae and pupre as found July 9, 191-1. Fig. 4.— Blighted sugar-pine eone opened to show 

 position of overwintering adults of cone beetle: a, Cone beetle adults. (Original.) 



Stages of Cone Beetles in Sugar-Pine Cones. 



