The Parnassiinae or Snow Apollos are a subfamily of the Papilionidae or Swallowtail family. The subfamily includes about 50 medium sized, white or yellow species.[1] The Snow Apollos are high altitude butterflies and are distributed across Asia, Europe and North America.
^ Nazari, V., Zakharov, E.V., and Sperling, F.A.H., 2007. Phylogeny, historical biogeography, and taxonomic ranking of Parnassiinae (Lepidoptera, Papilionidae) based on morphology and seven genes. Molecular phylogenetics and Evolution, 42: 131-156. pdf
