236 
HALF HOURS 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. 
a 
Orthosoma, grub, with head and thoracic rings enlarged. 
the scutel at the base of the wing-covers. It may 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 cylindrical-bodied beetles is 
the chestnut-colored Ortliosoma cylindricum (Fig. 180; a, 
larva; &, head and thoracic rings), whose grub may often 
12 
