I live along the salmon river in Otis, Oregon. orange and black bands… some hairs, 1 1/2″ in length
it is the Cinnabar moth caterpillar. This insect was introduced from Europe as a control for the introduced weed – Ragwort, the host plant for its caterpillars, which is toxic to livestock. A good bug for our gardens!
This caterpillar feeds on Tansy ragwort (Senecio jacobaea). Other food plants are salt-marsh fleabane, hound’s-tongue, hops and sow thistle.
These seem to be found in the NW corner of North America.
Interesting find! Thanks for sharing your great photo with us!