Insects - non-native

Bronze Birch Borer (Agrilus anxius) on Sep 22, 2018

Submitter does not have a specimen
EDRR Status: No Response/Action Required

Description of specimen

Exit holes in trees and die back.

Commentary

Without pictures of the insect or damage to trees, this one is hard to diagnosis 100%, but it certainly sounds like bronze birch borer. This is an insect that is native to Oregon but that causes a lot of problems on planted birch. Here are a few good resources for landowners:
https://catalog.extension.oregonstate.edu/em9191
https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/em9189.pdf

Wyatt Williams
Oct. 1, 2018, 12:09 p.m.