236 



HALF HOUBS WITH INSECTS. [Packard. 



are very short, with a transverse oval, rough space in the 

 middle of the upper and under side of the body. 



Its burrow is large, and winds around under the bark, 

 finally sinking into the wood, where the grub undergoes its 

 transformations into a beetle, which has remarkably long 

 feelers, and is of a granite gray color. By its habit of tun- 

 nelling logs it is an annoying insect to lumberers, who 

 remove the bark from the logs in order to free the wood 

 from its attacks. 



Similar to this beetle, with antennae twice as long as its 

 body, is a beautiful olive green species, with a white spot on 



Fig. 180. 



Orthosom.a, grub, with he.id and thoracic I'ings enlarged. 



the scutel at the base of the wing-covers. It ma}^ be seen 

 flying about white pine bushes in June, when it lays its eggs. 

 It is particularly abundant in the woods around Lake Supe- 

 rior. 



Somewhat related to these C3dindrical-bodied beetles is 

 the chestnut-colored Ortliosoitia cylindricum (Fig. 180 ; a, 

 larva ; h, head and thoracic rings) , whose grub may often 



12 



