Oeneis norna (Takanehikage) - Oeneis norna (English spelling)

Japanese: タカネヒカゲ(高嶺日陰) - タカネヒカゲ（英語表記）Oeneis norna

An insect of the family Satyridae in the order Lepidoptera (illustration). A species of true alpine butterfly that lives in Japan. It is widely distributed in the cold regions surrounding the Arctic from Lapland to Siberia, Kamchatka, and Alaska, and in Japan, it lives only in the alpine zones of the Hida Mountains and the Yatsugatake Mountains in Honshu. It is abundant in some places on the ridges of the Hida Mountains from Yukikura-dake to Chogatake and Nishihotaka-dake. Its wingspan is 3.5 to 4.5 cm. It occurs on wide ridges and gentle slopes at altitudes of 2,500 m or more, and despite its name "sky lily," it prefers sunlight and stops being active as soon as the sun is hidden by clouds, often hiding between stones or under pumila.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目ジャノメチョウ科の昆虫（イラスト）。日本にすむ真の高山チョウの1種。ラップランドからシベリア，カムチャツカ，アラスカにかけての北極を取り巻く寒冷地に広く分布し，日本では本州の飛驒山脈と八ヶ岳の高山帯のみにすんでいる。飛驒山脈の雪倉岳から蝶ヶ岳，西穂高岳にかけての尾根筋では場所によっては多産する。開張3.5～4.5cm。標高2500m以上の幅広い尾根や緩やかな斜面に発生し，〈ヒカゲ〉の名に似合わず，陽光を好み，太陽が雲に隠れると直ちに活動をやめ，石の間やハイマツの下などに隠れることが多い。

出典　株式会社平凡社世界大百科事典第２版について　情報

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