Mud Bug - Mud Bug

Japanese: ドロムシ(泥虫) - ドロムシ

A general term for insects in the family Dryopidae of the order Coleoptera. Adults are ovoid or long ovoid, with a body length of 1 to 8 mm. The antennae are extremely short, and many have comb-like segments at the end. The legs are long compared to the body, and the claws are large. For this reason, the English name is long-toed water beetle. Adults live in water or on land, and in water they move slowly by attaching themselves to submerged objects; they cannot swim. The larvae live in water. About 250 species have been recorded worldwide, and two species in Japan.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

甲虫目ドロムシ科Dryopidaeの昆虫の総称。成虫は卵形，または長卵形で，体長1～8mm。触角は著しく短く，先方の節が櫛（くし）状になるものが多い。脚は体に比して長く，つめは大きい。このため英名はlong‐toed water beetleという。成虫は水中，または陸上にすみ，水中では沈んでいる物体に付着してゆっくり移動し，泳ぐことはできない。幼虫は水中で生活する。世界から約250種，日本からは2種が記録されている。

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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