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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 Hydrometridae ： ウィキペディア英語版 Hydrometridae Hydrometridae is a family of semi-aquatic insects, known as ''marsh treaders'' or ''water measurers''. They have a characteristic elongated head and body which makes them resemble a yardstick for measuring the water surface. ==Appearance== Hydrometrid bugs are of a greyish or pale brown colour, and relatively large amongst Gerromorpha at around 8 mm, although some can exceed 15 mm. Their body and legs are long and slender, to the point where they resemble tiny phasmatodeans. The family is mostly wingless, but winged forms do occur. The head is long as well, usually more so than the body. Their eyes are located a little behind the middle of the head and tend to bulge. Their antennae, positioned at the end of its head  are four-segmented and their tarsi three-segmented . 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「Hydrometridae」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.