Mizukamantis (water mantis) - Mizukamantis (English spelling) water scorpion

Japanese: ミズカマキリ(水蟷螂) - ミズカマキリ(英語表記)water scorpion
Mizukamantis (water mantis) - Mizukamantis (English spelling) water scorpion
An insect of the Hemiptera family, Pycnonotidae (illustration). It is an aquatic insect resembling a praying mantis, with a tooth-like projection on the long front femur, and when the tibiae are folded, the tips of the projections engage with the teeth. The captured prey is far from the proboscis, but thanks to the extremely long proximal segment, it can bring the prey closer to its mouth by simply bending the joints like a pantograph. In Europe and the United States, this insect is called the water scorpion, as its capturing legs resemble the pincers of a scorpion.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
半翅目タイコウチ科の昆虫(イラスト)。カマキリに似た水中の虫という意味で,長大な前腿節(ぜんたいせつ)の途中に歯状突起があり,脛節(けいせつ)を折り畳むとその先端が歯とかみ合うようになっている。とらえた餌は口吻(こうふん)から遠く離れているが,非常に長くなった基節のおかげで,パンタグラフのように関節を曲げるだけで餌を口に近づけることができる。欧米ではこの捕獲脚からサソリのはさみを連想しミズサソリと呼ぶ。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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