Any idea what this is?
Location: Sioux City, IA
July 29, 2011 9:51 am
Wondering if you have any idea what this caterpillar/worm is?
This is a Four Horned Sphinx or Elm Sphinx. We just posted a photo of a Four Horned Sphinx from Michigan that came a day later than your submission, and out of guilt for having so many backlogged identification requests, we are posting your image as well.
Thank you for quick response. I was amazed to find your website as I was trying to find out what that interesting caterpillar was. I have never seen anything like it before. Thanks again!