White small to mid size butterfly, looked larger than a Cabbage White from what I could see, and without their dark spots. Maybe another Pieris species I haven't looked at closely before. Terrible cropped zoomed photo, but hoping I can get an idea of what this critter is.
A few of these on the hillsides, occasionally visiting the Hound' Tongue and Milkmaids-- about the only blossoms in the dappled sunshine of these groves.