Bob Rutemoeller and Sandy Hughes both noticed this big moth resting at the Gualala Post Office. It's a Western Cecropia, or Giant Silkmoth.
They each have the distinctive white markings on their wings, but the colors are different and the markings on the bottom of their wings is different. Still, at first glance, I would have thought Bob's moth was a Ceanothus. We are seeing wild lilac, Ceanothus, in bloom right now, which always attracts Ceanothus Moths. They are quite large and exciting to see. The Giant Silkmoth is a rarer sighting for us.
Thanks to Bob and Harm for allowing me to share their photos with you here.