I wish I could prove that I took these pictures about an hour ago. But I did! I'm about as surprised as anyone. This is strange, even for coastal SC. We've had several frosts, and I had not seen a butterfly in 3-4 days. And today, there he/she was, meandering around and posing for a series of photos. How this marvel of a critter has lived through these freezing nights, I can't imagine, but I hope he (she?) made many many babies.
The sun directly on him makes him look white here,
but backlit by sunlight, he's a thing of great beauty. These yellow sulphur butterflies are common in fall -- I've always thought of them as the "September butterflies," though they're around much earlier ... and later!