This little creatures are about the size of a quarter, or perhaps a tiny bit smaller. They seemed to stay still on the ground and hard to see among a bit of leaves and stones. The color in the photo does not show clearly with the sun shining on them, then they are more translucent or white. When you would get close they boiled up and darted in every direction but would soon land and congregate again. Jill discovered them while I was off taking a photo of the falls at Frozen Head State Park in Tennessee. The best guess from some sources seems to be the Spring Azure.
