What's That Bug? does not endorse extermination

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

What's That Bug? does not endorse extermination
Location: California

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