Pontia sisymbrii (Boisduval, 1852)
Status: Occasional local resident
NENHP Ranking: S3 Tier 2
Range: This species inhabits western North America from the Yukon and Northwest Territories south through California, Arizona and New Mexico. In Nebraska it is restricted to the Pine Ridge areas of the panhandle counties.
Larval Hostplant(s): Crucifers, particularly Arabis holboellii.
Broods/Flight Times: One spring flight, primarily in May.
Overwintering: As pupae.
Habitat: Adults are found on rocky hillsides and hilltops in open areas of ponderosa pine forest.
Avg. Wingspan: 1 1/4 – 1 3/4 inches
Similar Species: Western and Checkered Whites.