This looks a lot like Xanthotype urticaria, False Crocus Geometer:
http://mothphotographersgroup.msstate.edu/species.php?hodges=6740
http://en.wikipedia.org/wiki/Xanthotype_urticaria
If you scroll down on this page there are a couple of other Xanthotype moths that are similar that you might want to check out just in case:
http://mothphotographersgroup.msstate.edu/fast.php?plate=17.2&page=2&sort=h
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