Insects and Spiders - native

Bark Gnawing Beetle (Family Trogossitidae) on Aug 28, 2024

Originally reported as Emerald Ash Borer (Agrilus planipennis)

Submitter has sample

Description of specimen

I think I found an adult Emerald Ash beetle.

Commentary

Thank you for your report! This is not EAB. It's a native member (genus Temnoscheila) of the Bark-gnawing beetle family (family Trogossitidae). These beetles are larger and less slender than EAB. They are not tree killers. The adult beetles and their grubs live under the bark of already dead trees.

There are a number of iridescent green look-alike beetles in Oregon that are not pests. I am attaching a link to the ODA EAB webpage with some photos of other Oregon insects that could be mistaken for EAB

https://www.oregon.gov/oda/programs/IPPM/SurveyTreatment/Documents/EABLookAlikes.pdf

Thanks for being on the lookout!

Tom Valente
Aug. 29, 2024, 8:16 a.m.