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Speyeria cybele
is a butterfly of the Nymphalidae family. It is distinguished from the Aphrodite and Atlantis Fritillaries by a wide light submarginal band on the hindwing. It starts flying before dawn and returns to rest in mid-afternoon
If you want to ID the rest of the lovely butterfly pictures you uploaded, I just found this website http://www.pbase.com/lejun/native_americ... Has all the thumbnails visible so should be really easy to use as a guide! :)