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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 Petrolisthes eriomerus ： ウィキペディア英語版 Petrolisthes eriomerus ''Petrolisthes eriomerus'' is a species of marine porcelain crab found in the eastern Pacific Ocean. It is commonly known as the flattop crab. It is a flattened, rounded animal, with a carapace up to across. It is a filter feeder, and also sweeps food from rocks. ==Description== Porcelain crabs differs from true crabs in having four rather than five pereiopods or walking limbs normally visible, and are more closely related to king crabs and hermit crabs. This small porcelain crab has a carapace up to wide with a rounded outline. The body, limbs and claws are flattened dorsally. There are a pair of long antennae just beside the eyes. The broad carpi of the claw-bearing chelipeds have parallel sides and are twice as long as they are wide. These features distinguishes it from the otherwise similar ''Petrolisthes cinctipes''. The chelipeds are armed with claws usually of similar size which are half as long again as the length of the carpus and disproportionally large. The second and fourth pereiopods end in a pointed dactyl or moveable finger and the fifth is rudimentary and tucked under the abdomen. There are uropods attached to the abdomen which is long and is folded under the thorax. The limbs are covered in tufts of setae which are most noticeable when the animal is underwater. This porcelain crab is mainly reddish-brown or blueish-grey but the palps, some of the mouthparts and the knuckles of the cheliped dactyls are blue. 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「Petrolisthes eriomerus」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.