Minute oak bark beetle, P i t y o p t h o r u s m i n u t i s s i m u s Zimm. 



1 Work in red oak, upper part showing galleries, the lower exit holes 



Eyed Elater, A 1 a >i s o c u 1 a t u s Linn. 



2 Adult 



Large carpenter bee, Xylocopa \Mrginica Drury 



3 Work in siding, the yi inch galleries being made in a 5/g inch board. 



The enlargements in the gallery represent cells and the exit is seen 

 at the upper part of the imder portion. 



Hickory bark borer, S c o I \' t u s q u a d r i s p i n o s u s Say 



4 Work in hickory, the tipper portion showing rhe scored wood, the 



lower part the exit holes 



a 416 



