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Unknown Caterpillar - Anisota stigma

Unknown Caterpillar - Anisota stigma
Morganton, Burke County, North Carolina, USA
August 27, 2005
Size: 3.5 - 4.5 in
Found this Caterpillar eating on an Oak Leaf. Looks very similar to Yellow striped Oakworm. However, There are no stripes and the colors are like nothing I've ever seen.

How about
Anisota stigma, the Spiny Oakworm, in the guide here. It's color is very variable, but would have all those white dots and the many spines down the back. Wagner (1) page 236