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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 Polydesmida ： ウィキペディア英語版 Polydesmida Polydesmida (from the Greek ''poly'' "many" and ''desmos'' "bond") is the largest order of millipedes, containing approximately 3,500 species, including all the millipedes reported to produce hydrogen cyanide (HCN). ==Description== Members of the order Polydesmida are also known as "flat-backed millipedes", because on most species, each body segment has wide lateral keels known as paranota. These keels are produced by the posterior half (metazonite) of each body ring behind the collum. Polydesmids have no eyes, and vary in length from . Including the telson, adults have 19 or 20 rings, while juveniles may have from 7 to 19 rings.〔 Mature males have a single pair of gonopods consisting of the modified forward leg pair of the 7th segment.〔 Many of the larger species show bright coloration patterns which warn predators of their toxic secretions. 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「Polydesmida」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.