Insects and Spiders - native

Western Ash Borer (Neoclytus conjunctus) on Feb 2, 2025

Originally reported as Emerald Ash Borer (Agrilus planipennis)

Submitter has sample

Description of specimen

I think its larva from an emerald borer. It's white with a larger head. We're burning the wood so any left will be dead this winter :)

Commentary

Thank you for your report! Those do not look like EAB grubs, except in general shape. EAB grubs are flat, and the segments of the body are bell-shaped. If this was ash wood that you were splitting, then these may be the native Western ash borer. This is not a tree killer. They feed in dead wood.

Tom Valente
Feb. 3, 2025, 7:43 a.m.

Resources

Western Ash Borer information on iNaturalist

Location

Found while splitting wood for kindling. We got the wood from the Coquille area.

Expert Reviewer

Tom Valente
Oregon Department of Agriculture

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