[Unidentified Butterflies East of the Cascade Mountains of Oregon and Washington]

An unidentified fritillary on green rabbitbrush (Chrysothamnus viscidiflorus) as observed along the Fremont National Recreation Trail on the west-facing slopes of Twelvemile Peak, Fremont-Winema National Forest.......August 2, 2020. Possibly, two species of fritillary butterflies are shown here?, or just 2 different sexes?.