70 College of Forestry 
limb for five minutes before he was finally dislodged. Per- 
haps the most peculiar case illustrating the ardency of the 
male was the following: It being desired to examine the 
anatomy of the penis, a pair of beetles in copulation was 
chosen and the penis of the male was grasped with a pair of 
forceps and removed from the body. The male was then 
replaced in the jar with his mate. For a few minutes he 
rushed about in an excited manner acting as if in consider- 
able pain. In a short time, however, he quieted down and 
his behavior became more normal. Just eighteen minutes 
after the amputation of his penis he again mounted the 
female and attempted copulation. 
During actual copulation the female, however anxious she 
may apparently have been to escape, remains stationary or 
nearly so. She usually behaves with the greatest apparent 
indifference, very often continuing to feed by biting off bits 
of pine bark. Both males and females feed readily in 
captivity on the bark of fresh pine limbs, although perhaps 
the female is more voracious. 
In depositing her eggs the female usually chooses a point 
near the juncture of twig with the limb or some location 
which has been roughened by having the bark chewed off in 
feeding (Fig. 17). In either case she bites away the outer 
bark constructing what might be spoken of as a shallow pit 
which extends into the inner green bark. She then turns 
around, places the end of her ovipositor in this shallow cavity 
and pushes it deeper and deeper into the inner bark in a 
direction parallel to the bark fibres. In four cases the depth 
of this egg puncture was measured and was found to vary 
from five and a half to seven and a half millimeters. Some- 
times several eggs are deposited in punctures arising from 
one pit. In such cases they are arranged radially around 
the common point of entrance. In some cases no pit is con- 
structed, but the ovipositor is thrust through the thin, outer 
bark as far as possible into the inner, green bark. The pro- 
cess of oviposition was timed in several cases and requires 
on an average about two minutes. 
