I first saw a moth like this two nights ago under an outside light. Tonight there
were several of them. It is beautiful. Can you tell me what it is? By the way, I’m from the Sierra Foothills in California.
Rachel Oliver

Hi Rachel,
This is a Pacific Green Sphinx, Arctonotus lucidus. They fly from January to March, and you are lucky enough to have witnessed the event. More information can be found at this government site.

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