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Erebia polaris
The Arctic woodland ringlet (''Erebia polaris'' or ''Erebia medusa polaris'') is a butterfly of the Nymphalidae family. It is found in Lappland and Boreal Asia.〔(Erebia at funet )〕 The habitat consists of damp grasslands, but this butterfly also occurs on dry grasslands and in waste places, often where shelter is provided by birches or juniper bushes.
==Description==
The Arctic woodland ringlet is a medium-sized butterfly with a wingspan of between . Females tend to be a little larger than males. The upper side of both the fore and hind wings are dark brown with black eyespots with red margins in a row near the edge. In the male the eyespots are small and do not usually have a white centre except possibly the front one. In the female they may be no bigger but many of them have white centres and they may be more numerous forming a continuous line. The underside of the wings is similar to the upper side. This butterfly can be distinguished from the rather similar Lapland ringlet (''Erebia embla'') and the Arran brown (''Erebia ligea'') by the fact that it has no white blotches on the under surfaces of the wings. It can be distinguished from the Arctic ringlet (''Erebia disa'') by the fact that it always has eyespots on its hind wings.〔(【引用サイトリンク】title=Arctic Woodland Ringlet: ''Erebia polaris'' )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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