Violet-feeding
Guides
Speyeria
greater fritillaries
Speyeria is a genus of approximately 19 species of butterflies in the family Nymphalidae, commonly known as greater fritillaries. The genus was reestablished as separate from Argynnis in 2017 based on phylogenetic evidence. Three species occur in Eurasia and 16 in North America. Species are univoltine, with larvae feeding exclusively on native violets (Viola spp.) and adults nectaring on diverse flowers. Several species and subspecies are threatened or endangered due to habitat loss and climate change.