Caterpillar Mystery

I started a major rock project next to my water garden. While scattering the rocks from the LONG pile of them, I found this caterpillar on the underside of one.

Several rocks later, I discovered this caterpillar on the underside of a rock too. Obviously, it’s the same species as the one above. I can’t explain the circle-like shapes around it. It looks like it molted in the center area. What would the larger ones have been used for? They wouldn’t use them to shrink. The top caterpillar was about 5/8 inch long, and the other was under a half inch.

After going through 400 pages, page by page, in my Caterpillars of Eastern North America, I didn’t find a caterpillar that resembled these. So, maybe the caterpillars will change considerably as they mature, or maybe I wasn’t looking quite the right way at the details.

If anyone knows their identity, please let me know.

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6 responses to this post.

  1. Interesting!! I hope someone knows so we find out what’s up with those circles 🙂

    Reply

  2. Posted by Therese on October 18, 2012 at 4:41 pm

    Check out the geometrical patterns it made. And yes, I do know the name…it is a Herbacis Fortunata.(not) LOL

    Reply

  3. That looks cool! It should be called the Halloween Caterpillar, since it’s orange and black. 🙂

    Reply

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