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The Xyeloidea are a small superfamily within the Symphyta, containing fewer than 200 extant species, but with an extensive fossil record. They are sometimes believed to be the oldest group within the Hymenoptera. Most species occur in the Northern Hemisphere, especially in boreal regions. 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「Xyeloidea」の詳細全文を読む スポンサード リンク
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