Here’s an old one from the Facebook archives that somehow never managed to be put on the blog. This is the caterpillar of the curved-line owlet moth (Phyprosopus callitrichoides Hodges #8525), a fantastic member of the Noctuidae and one of several “grail species” that caterpillar hunters are on the lookout for from mid-summer to early fall. This one was found on August 20, 2016 at St. Francois State Park. I have not found another of these since, but I am hopeful that I might find one this year. Wherever I visit, I am looking closely at catbriers (Smilax sp.), which are there sole hosts.
A Thousand Acres of Silphiums 