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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Archostemata ： ウィキペディア英語版 Archostemata Archostemata is the smallest suborder of beetles, consisting of fewer than fifty known species organized into five families. Archostemata is an ancient lineage with a number of primitive characteristics. They are similar in morphology to the first beetles, which appear in the fossil record approximately 250 million years ago. Antennae may be thread-shaped (filiform) or like a string of beads (or moniliform). This suborder also contains the only paedogenic beetles, ''Micromalthus debilis''. These beetles are considered rare. Fossil deposits from the Permian suggest that Archostemata were once much more common and dispersed over a wide portion of the globe, and the species that remain are but scattered vestiges of their former population. There are today five families worldwide (Crowsoniellidae, Cupedidae, Jurodidae, Micromalthidae, and Ommatidae), with only two (Cupedidae and Micromalthidae) occurring in North America. == See also == * List of subgroups of the order Coleoptera 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「Archostemata」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.