Body length 60 mm. On shaded porch during daylight; a diurnal moth, not nocturnal as many I notice here.
Came across this caterpillar being attacked by a scorpion. The scorpion retreated to a hole when I walked up, and the caterpillar moved on and continued feeding.
San Diego County, California, US
He was about 3 inches from wing to wing and about 2.5 inches from head to bottom. A little pink coloration on the wings, very pretty moth. It was transfixed to my porch light