Insects and Spiders - native

unknown on Jul 8, 2025

Originally reported as Emerald Ash Borer (Agrilus planipennis)

Submitter does not have a specimen

Description of specimen

Bulging and splits along bark of ash tree superficially similar to EAB sign. Damage is mostly within reach of people. No d-shaped exit holes, and damage is possibly due to humans, but figured it’d be better to be safe than sorry just in case. Tree has about 10 - 15 inches DBH (rough estimate).

Commentary

Thanks for your report. I did not see any exit holes in this picture. The damage looks like it came from a hatchet or something similar. Ash can bounce back pretty quickly from an injury like that. If you see exit holes, get a good closeup picture. If you see adults flying around, or galleries under the bark, take pictures of those too and submit them here or under a new report. Review the signs and symptoms of EAB here: www.OregonEAB.com Thank you

Wyatt Williams
July 28, 2025, 4:28 a.m.

Location

On the east bank of the Willamette River, between Sellwood Riverfront park Oaks amusement park. Can walk towards the river from Oaks Park Community boathouse.

Approximate coordinates: (45.4700864, -122.6646005)

Expert Reviewer

Wyatt Williams, Ph.D.
Wyatt Williams, Ph.D.

Invasive Species Specialist

Oregon Department of Forestry

Private Forests Division

2600 State St. Bldg. D

Salem, OR 97310-0340



Office: 503-945-7472

wyatt.williams@oregon.gov

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