These two Hecla Sulphurs Colias hecla hecla? were on the tundra sections of the Steese Highway northeast of Fairbanks, Alaska, on June 26, 2019:
This Hecla Sulphur Colias hecla hecla? was one of a handful seen flying well above the treeline at Arctic Valley Ski Resort (NE of Anchorage), Alaska, on August 08 and 10, 2007:
