202 



COLEOPTERA— BEETLES 



Fig. 155. — Scolytus rugulosus' a, beetle; b, same, in profile; c, pupa; 

 d, larva. All magnified about ten times. (Bur. Ent., U. S. Dept. Ag.) 



s- 





Fig. 156.— Scolytus rugulosus. Section of injured tree. (Photo from 

 Ohio Exp. Sta.) 



