A new marine tardigrade genus and species (Arthrotardigrada, Styraconyxidae) with unique pockets on the legs

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Abstract

<jats:p>A marine heterotardigrade <jats:italic>Cyaegharctus kitamurai</jats:italic><jats:bold>gen. et sp. nov.</jats:bold> (Arthrotardigrada, Styraconyxidae) is described from Daidokutsu, a submarine cave off Iejima island, Okinawa Islands, Ryukyu Archipelago, Japan. It is easily distinguished from all other styraconyxids by its pocket organs (putative sensory structures) on all legs in addition to the usual leg sensory organs. Its combination of other character states, such as the dorso-ventrally flattened body, ovoid primary clavae, conical secondary clavae, large terminal anus, internal digits with proximal pads and peduncles, external digits with developed peduncles and all digits with three-pointed claws in adult female, supports the erection of a new genus and species.</jats:p>

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