Say’s Parnassian

Parnassius smintheus sayii W. H. Edwards, 1863

Family: Papilionidae

Status: Rare western resident, possibly extirpated

NENHP Ranking: S1, Tier 2

Range: This species is found from western Alaska southeast to northern New Mexico. It has been recorded from the westernmost panhandle counties in Nebraska.

Broods/Flight Times: One early summer flight from mid June to mid July

Larval Hostplant(s): Stonecrop (Sedum lanceolatum).

Habitat: Old literature and specimens in the University of Nebraska – Lincoln collection suggest this species was common in the Sioux County canyonlands in the early 1900s.

Found at: Gilbert-Baker SWMA

Overwintering: As an egg or partially grown larvae

Similar Species:

Notes: It is now extremely rare, if it exists in the state at all. The most recent record (from the late 1980’s) is from the mouth of Monroe Canyon north of Harrison where the hostplant grows in the road cut.

, Photo by Matthew Brust
Photo by Matthew Brust
Say’s Parnassian – female, dorsal
Say’s Parnassian – ventral
Say’s Parnassian – male, dorsal
Say’s Parnassian – male, ventral

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