I had uncommonly good luck with caterpillars during my recent trip to Kentucky. This is the angel moth caterpillar, Olceclostera angelica, a member of the Bombycidae family of silkworm moths. Angel moth caterpillars usually feed on lilac or ash. This one was on a wooden fence post, probably after falling from a host plant. I saw it near the historic entrance to Mammoth Cave in Mammoth Cave National Park. It is an uncommon caterpillar, not often seen, and, like the spun glass caterpillar I saw nearby and wrote about recently (click here to see the story) -- I had never seen one before.
The longhaired angel moth caterpillar grows up to be a handsome furry-legged moth with a glittery abdomen and silver-grey scallop-edged wings that made the scientist who named it think of angels. Click here to see a photo of the moth.