Insects and Spiders - native

unknown on Jan 9, 2024

Originally reported as Emerald Ash Borer (Agrilus planipennis)

Submitter has sample

Description of specimen

Had arborist out to trim trees. Asked him about burnt trees we have. He examined and said we have a bad infestation. I noticed it about 6 months ago. Thought the kids were burning the bark


Thank you for your report! These holes are not woodboring beetle holes, they were made by a sapsucker. The culprit is actually in the second photo! Woodpeckers CAN help locate EAB under the bark, but in that case they will expose the galleries and the holes are not in lines.

Emerald ash borer makes D-shaped holes about 1/8" wide. Here is the address of Oregon Department of Agriculture's IPPM Survey and treatment projects EAB page

Scroll down to find photos of Emerald Ash Borer Look-Alikes, the EAB Response Plan for Oregon, and more information about how to recognize EAB attack, so that you can monitor your trees.

Tom Valente
Jan. 9, 2024, 1:54 a.m.