Puddling on damn rocks near a waterfall
I think this pair is one of the Greater Fritillaries, but darned if I can figure them out. Any help appreciated.
Speyeria cybele. Woodend Nature Sanctuary, Chevy Chase, Maryland, USA.
Speyeria, commonly known as greater fritillaries, is the genus of butterflies in the family Nymphalidae commonly found in North America and Asia. Delimitation versus Argynnis is problematic, and the present genus is sometimes included therein.