148 MISC. PUBLICATION 273, U. 8S. DEPT. OF AGRICULTURE 
damage to a low point. In wood that has become infested after being 
put into place, the grubs usually can be reached and killed by liberal 
applications of crude orthodichlorobenzene or kerosene. 
The sculptured pine borer (Chalcophora angulicollis Lec.) (fig. 
73) 1s the largest of the western species of flatheaded borers and the 
only western representative of this genus. The adults are over 1 
inch long and dark brown to black, with an iridescent bronze luster, 
especially on the under side. The upper surface is marked with ir- 
regularly sculptured areas. Many a woodsman has been startled on a 
warm summer day to have one of these large beetles suddenly take 
flight with the noise of a small airplane from its quiet resting place 
on a hearby tree trunk. The larvae feed in the wood of dead pines 
and firs throughout the Western States. 
FIGURE 73.—Flatheaded wood borers: A, Chalcophora angulicollis, larva and adult, * 1.5 
(drawing by Edmonston); B, the same, natural size; @, Dicerca tenebrosa, natural 
size. _ 
The golden buprestid (Buprestis aurulenta L.) is one of the most 
destructive species in this group. The adults are beautifully colored 
beetles one-half to three-fourths of an inch in length, with a flattened 
oval body and an iridescent green or bluish color, with all margins 
bordered with copper. They are particularly attracted to pitchy 
wood and lay their eggs on fire scars or the expesed pitchy wood of 
pines, firs, and other conifers. Flooring and woodwork of Douglas 
fir that is not heavily covered with paint or varnish is sometimes re- 
peatedly attacked until the interior is completely riddled and 
destroyed. If the wood is very dry, it takes several years for the 
larvae to complete their development. 
There are about 12 other species in this genus of highly colored 
beetles that do similar damage to the wood of western forest trees. 
Some of the more common are as follows: 
