I think it is Walnut Caterpillar
http://mothphotographersgroup....
http://www.na.fs.fed.us/spfo/p...
Excellent photo of caterpillar! Sandi it is good idea to put a picture of caterpillar on BugGuide.Net.
Just crop a little more first picture to have only the caterpillar on photo
(the format (sides ratio) of cropping it is not important - can be "custom" crop)
Here is the site
http://bugguide.net/node/view/...
You need just to register on register page
http://bugguide.net/user/regis...
You can load the photo here
http://bugguide.net/node/view/...
When you are log you have, on this page, (up-left corner) "add image" . Select add-image and you have a page for submit image.
You need to fill some information. But it is very simple. (For title you can put just a sign "?" or caterpllar? or ...
Insects reporting is useful because is performed and a monitoring of them.
If you can not post the picture, I will try to explain in more detail.
Do not ask insect control measures. They will not respond. Ask for identification only.