Papilio machaon hudsonianus A. Clark, 1932;  Comments: NE Canada (and far NE USA) TL: Canada (Mb).

Papilio machaon hudsonianus (HOLOTYPE of Papilio nitra v. kahli) CANADA: MANITOBA: Ridings Mtns., 15-VI-1933 [CMNH] photo taken by Gerardo Lamas and digitized by the Tropical Andean Butterfly Diversity Project, funded by the Darwin Initiative.