I live in Northeastern Ohio and I have found about a dozen of these in my yard today. I have looked all over the internet before finding your site. Can you please tell me what this is.
Your caterpillar is a Catalpa Sphinx, Ceratomia catalpae. They feed on the leaves of catalpa, or cigar tree as we called them in Youngstown Ohio. You can find photos of the adult moths on Bill Oehlke’s excellent website. We are copying Bill Oehlke on this response so he can add your data to his comprehensive species distribution information.