Orgyia vetusta, also known as the western tussock moth, formerly Hemerocampa vetusta, is a moth found in the Pacific States and British Columbia.

The Western tussock moth is reported on virtually all California oak species as well as various fruit and nut trees, ceanothus, hawthorn, manzanita, pyracantha, toyon, walnut, and willow.

[1] There is an isolated population in Boise County, Idaho.

[citation needed] This species has also been seen in U.S. gulf coast states such as Louisiana.

This article on a moth of the subfamily Lymantriinae is a stub.