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The Dreamy Duskywing or Aspen Dusky Wing (''Erynnis icelus'') is a butterfly of the Hesperiidae family. It is found in boreal North America, from the Northwest Territories east across southern Canada to Nova Scotia, south in the western mountains to southern Arizona and southern New Mexico, south in the east to Arkansas, north-eastern Alabama and northern Georgia. The wingspan is 29–38 mm. There is one generations with adults on wing from April to early July. There might be a rare second generation in the southern Appalachian Mountains. The larvae feed on ''Salix'', ''Populus'' and sometimes ''Betula'' species. Adults feed on nectar from flowers of blueberry, wild strawberry, blackberry, Labrador tea, dogbane, New Jersey tea, winter cress, purple vetch and lupine. ==External links== *(Nearctica ) *(Bug Guide ) *(Dreamy Duskywing ), Butterflies of Canada 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「Erynnis icelus」の詳細全文を読む スポンサード リンク
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