This crab belongs to the order Decapoda, class Crustacea, family Portunidae. It is found south of Sagami Bay, in the South China Sea, Australia, and India, and lives on the seabed at depths of 30 to 50 meters. Its carapace is about 8 centimeters wide and egg-shaped, and its surface is densely covered with short hairs. It has six pointed teeth on the calyx and six triangular teeth on the front edge of the carapace. Its carapace is deep pink, with one light-colored pattern on each side on the rear edge. Its claws are long and have four spines on the front edge of the long segments. The closely related species, Ch. riversandersoni , does not have short hairs on its carapace. Both species are edible, but there are not many of them in existence. [Masamichi Takeda] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
節足動物門甲殻綱十脚(じっきゃく)目ワタリガニ科に属するカニ。相模(さがみ)湾以南、南シナ海、オーストラリア、インドにかけて分布し、水深30~50メートルの海底にすむ。甲幅8センチメートルほどの卵形で、甲面は短毛で密に覆われている。額(がく)にはとがった6歯、甲の前側縁には三角形の6歯がある。甲面は濃いピンク色で、後側縁の部分に左右1個ずつの淡色の紋がある。はさみ脚(あし)は長大で、長節の前縁に4本のとげがある。近縁種のアカイシガニモドキCh. riversandersoniでは甲面に短毛がない。両種とも食用とされるが、個体数は多くない。 [武田正倫] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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