Thanks for this! This was a late season sighting but it’s been unusually warm this past week and not even freezing at night @7100’. 3 other species did come to the light but she was the most “colorful”. I did notice she looked quite slim but since I’m relatively new to this I didn’t even think that she may’ve laid her eggs already! Other than that she looked fairly fresh and her colors were quite bold. Do you know what this moth might host on? The bramble & Begonia listed as possible hosts are nowhere near my porch light. It’s basically a contact zone where the Great Basin, Mojave Desert and Sierra join, it’s very dry.

I'm not sure what else they might feed on, but both genera probably have hundreds of species represented in California.
Please keep an eye out, since we have very few images of the caterpillars in this genus. If you get a chance to rear some, that would be awesome.

Well, that's currently in the works for this and others! Thru serendipity & a strange twist of fate, I've found myself as one of Dave Wagner's Eastern Sierra collaborators for for his upcoming book on Western North American caterpillars. I love natural history in general but I'm certainly no biologist! LOL! His grad student is the one that is studying Stamnodes. My interest in documenting moths started ~ 9 months prior to meeting him & seems to be dovetailing nicely into his & his grad student's research.