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Gerris lacustris : ウィキペディア英語版 | Gerris lacustris
''Gerris lacustris'', commonly known as the common pond skater or common water strider, is a species of water strider, found across Europe. ==Description== Water striders vary in length ranging between and in size. Their body shape is very slender and elongated. They have six legs; the first pair is short and stubby while the other two pairs are thin and elongated which are used for moving over the water surface which we call "walking on water". The first pair of legs is used for holding its prey, the middle pair propels the bug along the surface of the water with either a rowing or jumping motion, and the hind pair of legs is used as rudders. The entire body of ''G. lacustris'' including its legs is covered with many tiny hairs that have a wax-like coating. ''G. lacustris'' are dark brown in colour. Water striders have very strong sucking mouthparts known as a rostrum or beak.〔(【引用サイトリンク】url=http://www.mtbaker.wednet.edu/harmonyditch/water_strider.htm )〕
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「Gerris lacustris」の詳細全文を読む
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