Butterfly sitting on a barberry shrub.
Comma has three spots across vs. four spots across on the Question Mark butterfly.
Citizen Science mushroom walk with Ron Trial in the Dell on 10/4/18.
1:33pm in the Dell. 77 degree and clear skies. This is apparently an adult female whitetail skimmer, which “closely resembling that of female Libellula pulchella, the twelve-spotted skimmer.”