Road running 40:00  4.5 mi (8:53 / mi)
shoes: Adrenaline 2
GSFC perimeter road.
Butterflies this run:
E. Comma (Polygonia comma)
Question Mark (Polygonia interrogationis)
Little Wood Satyr (Megisto cymela)
You have to get pretty close to the Polygonias to tell them apart, but from this small sample and the one the other day, the Commas are larger and darker on the upperside of the hindwing. In both cases, I saw the punctuation mark on the underside for the positive id.