Ponderous Borer Beetle

[Oregon Viking]

 

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[newnan man]

Are they an invasive species?

 

[Oregon Viking]

Are they an invasive species?

Native woodborers: non-pests.

Ponderous borer (Ergates spiculatus)
Adults are 4.5-7.0cm long,
brown with non-serrated
antennae. Larvae attack dead
and dying Douglas-fir or
pine. The mandibles and
boring action of these larvae
inspired the ‘teeth’ on the
modern chainsaw chain.

https://www.oregon.gov/ODF/Documents/ForestBenefits/Woodboringbeetles.pdf#:~:text=Ponderous%20borer%20%28Ergates%20spiculatus%29%20Adults%20are%204.5-7.0cm%20long%2C,inspired%20the%20%E2%80%98teeth%E2%80%99%20on%20the%20modern%20chainsaw%20chain.