Phystis
Phystis is a monotypic genus of butterflies from southern United States in the family Nymphalidae. It contains the species Phystis simois.

Subspecies
P. s. chinchipensis (Hayward, 1964) (Peru)
P. s. pratti (Hall, 1935) (Peru)
P. s. simois (Hewitson, 1864) (Brazil)
P. s. variegata (Röber, 1913) (Brazil, Argentina, Uruguay, Bolivia, Peru)

References

Melitaeini
Monotypic butterfly genera
Taxa named by Robert P. Higgins
Lepidoptera of the United States
Butterflies of North America