Ponderous Borer (Trichocnemis spiculatus) on Aug 11, 2022
Submitter does not have a specimen
Description of specimen
A brown beetle, approximately 2 inches long with mandibles.
Order: Coleoptera
Family: Cerambycidae
Species: Ergates spiculatus
This is Ergates spiculatus, the ponderous borer. Their larvae feed in stressed, dead, and decaying conifers of all sorts; the adults don't feed. They are native to Oregon and they are the largest beetle in the West. They are often attracted to homes due to lights. No danger!
Josh Vlach
Aug. 11, 2022, 1:55 a.m.