Early Instar Unicorn Caterpillar
Location: S. Illinois
August 22, 2011 6:01 pm
Think this is an early instar unicorn caterpillar. Right about an inch long, on oak. This image is a little sharper than the one I sent along last year.
This does appear to be a Unicorn Caterpillar or another closely related member of the same genus Schizura based on photos posted to BugGuide. If it is significantly smaller than the image you sent last year, it is most likely an earlier instar, though we cannot tell scale by comparing the two images.