Ponderous Borer (Trichocnemis spiculatus) on Aug 18, 2022
Submitter has sample
Description of specimen
Around 2" long, black beetle with long antennae.
Submitter has sample
Around 2" long, black beetle with long antennae.
Here's the identification:
Order: Coleoptera
Family: Cerambycidae
Species: Trichocnemis spiculatus
This is Trichocnemis 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. 19, 2022, 12:57 a.m.