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Colias johanseni, the Johansen's sulphur, is a butterfly in the family Pieridae found in North America. It is endemic to Nunavut, Canada. Johansen's Sulphur, Butterflies of Canada
Flight period is July.
Wingspan is from 35 to 38 mm.
Larvae feed on Hedysarum mackenzii. Colias at Markku Savela's Lepidoptera and Some Other Life Forms
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