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The Butterbur (''Hydraecia petasitis'') is a species of moth in the Noctuidae family. It is found from most of Europe, east to Siberia and Japan.〔(Hydraecia at funet )〕 The wingspan is 44–50 mm. Adults emerge in August and the beginning of September. The larvae feed on ''Petasites hybridus'' from within the stem and later the roots. They can be found from April to the beginning of July.〔(UKmoths )〕 ==Subspecies== *''Hydraecia petasitis petasitis'' (Europe) *''Hydraecia petasitis amurensis'' Staudinger, 1892 (southern Siberia, Amur, Japan) 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「Hydraecia petasitis」の詳細全文を読む スポンサード リンク
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