Wood Borers
FIELD GUIDE TO INSECTS AND DISEASES OF ARIZONA AND NEW MEXICO FORESTS
Figure 141. Figure 141. Egg niches of cerambycid wood borers are oval shaped pits in the bark with a slit in the bottom.
Figure 142. Figure 142. Larva of roundheaded wood borer.

This group contains insects belonging to several order (Coleoptera, Lepidoptera, and Hymenoptera) that bore into the sapwood and sometimes the heartwood of weakend, fire-scorched, recently felled, or dead hardwood and conifer trees. In addition, they can cause substantial economic losses in the form of degraded wood and volume. Descriptions here include families belonging to the order Coleoptera: longhorned beetles/roundheaded borers (Cerambycidae), metallic wood-boring beetles/flatheaded borers (Buprestidae) and ambrosia beetles (Scolytinae Platypodinae). Wood wasps/horntails (Hymenoptera: Siricidae) and clearwinged moths (*Lepidoptera: Sesiidae) are also common wood borers on pines and aspen in the Southwest, respectively.

Reference:  24, 41