''Colias johanseni'', the Johansen's sulphur, is a

butterfly Butterflies are insects in the macrolepidopteran clade Rhopalocera from the Order (biology), order Lepidoptera, which also includes moths. Adult butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. The ...

in the family

Pieridae The Pieridae are a large family of butterflies with about 76 genera containing about 1,100 species, mostly from tropical Africa and tropical Asia with some varieties in the more northern regions of North America and Eurasia.DeVries P. J. in Levi ...

found in North America. It is endemic to

Nunavut Nunavut ( , ; iu, ᓄᓇᕗᑦ , ; ) is the largest and northernmost Provinces and territories of Canada#Territories, territory of Canada. It was separated officially from the Northwest Territories on April 1, 1999, via the ''Nunavut Act'' ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

.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''

References

johanseni Butterflies of North America Insects of the Arctic Butterflies described in 1990 Endemic fauna of Canada Endemic fauna of Nunavut {{pieridae-stub