What is "prodryas"

Prodryas persephone is an extinct butterfly, known from a single specimen from the Chadronian-aged Florissant Shale Lagerstatte of Late Eocene Colorado. P. persephone is the first fossil butterfly to be found in North America, and is exquisitely well preserved. Its closest extant relatives are the Mapwings and African Admirals of the genera Hypanartia and Antanartia, respectively.