Abstract

A new species, Amphiascoides coreanus, is described from the sandy beaches of Sangju-ri, Namhae, and Dolsan-do, Yeosu, the south coast of Korea. This species is clearly distinguishable from its congeners with the combined characters of the short bulbous caudal setae IV and V, three-segmented antennary exopod, and only one inner seta of the Leg 3 exopod segment 3. Additionally, the species is easily distinguishable from the congeners by the minute spinules on the dorsal body surface. The new species shares the three-segmented antennary exopod and only four setae on the third exopodal segment of Leg 3 with A. dispar and A. paradebilis but displays the characteristic shape of caudal setae. This is the first record of the genus Amphiascoides in the region.

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