Oeneis norna

Norse grayling
Oeneis norna asamana in the Hida Mountains of Japan
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Nymphalidae
Genus:	Oeneis
Species:	O. norna
Binomial name
Oeneis norna Thunberg (1791)
Subspecies
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Oeneis norna, the Norse grayling, is a species of butterfly in subfamily Satyrinae, that occurs throughout Scandinavia and northern Asia.

It is extremely variable and the smaller, lighter O. norna often resemble O. bore.

This species can be found in northern Norway, Sweden, and Finland. In Russia it is seen in the Ural Mountains, Yamal Peninsula, Kola Peninsula, and Siberia. It is also encountered in Japan. Within its range it lives in bogs, damp grassy areas and mossy forest clearings.

There is one flight a year between mid-June and July. It takes two seasonal cycles for the caterpillars to completely develop. Once the caterpillars hatch many will die without even attempting to eat.

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