Insects and Spiders - native

Smerinthus ophthalmica on May 30, 2020

Originally reported as Sphinx Moths (family Sphingidae)

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

Description of specimen

The moth was not in flight and did not fly away when we approached rather closely.

Commentary

Dear Alissa, this moth feeds only on species of Populus, so poplars, cottonwoods, and aspen. Like most sphinx it feeds on the leaves. If the damage to birch is flagging and limb dieback, it is most likely due to the bronze birch borer, a buprestid. Here’s a link:
http://pnwmoths.biol.wwu.edu/browse/family-sphingidae/subfamily-smerinthinae/smerinthus/smerinthus-ophthalmica/

Helmuth Rogg
June 1, 2020, 8:18 a.m.