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The Northern Clouded Yellow or Hecla Sulphur (''Colias hecla'') is a butterfly in the Pieridae family. In Europe, it is found in the northern part of Norway, Sweden and Finland up to heights of 900 m. It is also found in Greenland, Alaska, the Northwest Territories, Yukon, Quebec, Labrador, Manitoba, the Chukot region, East Chukotka, and the Far East. The wingspan is 36–46 mm. The butterfly flies in June to August depending on the location. The larvae feed on ''Astragalus'' species, including ''Astragalus frigidus'' and ''Astragalus alpinus'' as well as ''Trifolium repens''. They are also known to feed on ''Salix arctica'' where Astragalus are absent.〔MSc thesis, University of Helsinki, 2012. http://hdl.handle.net/10138/36981〕 ==Subspecies== *''Colias hecla hecla'' (Greenland) *''Colias hecla glacialis'' (Alaska and the Northwest Territories, Yukon, Quebec, Labrador) *''Colias hecla hela'' (Manitoba, Northwest Territories) *''Colias hecla aquilonaris'' or ''Colias hecla orientis'' (Chukot region, Far East) *''Colias hecla sulitelma'' (Scandinavia, northwestern Siberia) *''Colias hecla zamolodchikovi'' (East Chukotka) *''Colias hecla viluiensis'' Ménétries, 1859 (Transbaikal) ''Colias hecla sulitelma'' is sometimes treated as a separate species ''Colias sulitelma''. If that is the case, ''Colias hecla zamolodchikovi'' is considered a subspecies of ''Colias sulitelma'', named ''Colias sulitelma zamolodchikovi''. Furthermore, ''Colias canadensis'' is sometimes treated as a subspecies of ''Colias hecla'', named ''Colias hecla canadensis''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Colias hecla」の詳細全文を読む スポンサード リンク
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