Ceanothus Silkmoth

Moth identification
Location: Trinity National Forest, Trinity County, CA / May 30th / 2,500 ft elevation.
May 31, 2011 9:40 am
I looked through the large moth photos and did not see this particular guy. Some of the silk moths were close, but not spot on. It has about a 4.5 inch wing span. Any help would be appreciated.
Signature: K. Fisher

Ceanothus Silkmoth

Dear K. Fisher,
Your lovely moth is a Ceanothus Silkmoth,
Hyalophora euryalus.  The distinguishing feature of this species is the “discal spot on hindwing shaped like an elongated comma pointing toward outer margin” according to BugGuide.

Ceanothus Silkmoth

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