Chinese Mantid nymph

Nice find! That's a healthy looking nymph!

I am fairly sure this is not a Carolina Mantis. The body shape and coloration doesn't seem to match. Brown phase Carolina Mantises also have stripes on their legs.
Here is a link to the Bugguide page for the Carolina Mantis. You can compare your image to these: http://bugguide.net/node/view/4821

Here are some images of brown phase Chinese Mantids. http://bugguide.net/node/view/676039/bgi...
http://bugguide.net/node/view/331935/bgi...
http://bugguide.net/node/view/227395/bgi...

Hope this helps!

Please consider adding this to the Marvelous Mantids of the North East mission: http://www.projectnoah.org/missions/1573...