Thank you for your report! EAB does not attack cottonwood, only ash trees, European olive and white fringetree. However, there are other borers that will attack cottonwoods, especially stressed or recently dead trees. There are also a number of iridescent green look-alike beetles in Oregon that are not pests. I am attaching a link to the ODF EAB webpage with some photos of other Oregon insects that could be mistaken for EAB

https://oregon-eab-geo.hub.arcgis.com/pages/identify

Attach a photo of a suspect beetle and/or photos of the damage to help with identification of your pest. Thanks for being on the lookout!

Tom Valente
Aug. 11, 2025, 2:58 a.m.