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A new species of the genus Polycheria (Peracarida, Amphipoda, Dexaminidae) from South Korea
Yoon, Seong Myeong,Yi, Chang Ho,Jung, Tae Won Brill Academic Publishers 2016 Crustaceana Vol.89 No.5
<P>Polycheria acercauda sp. nov., an amphipod symbiotic with sponges and ascidians in Korean waters, is established herein as a new species, along with a detailed description and illustrations. This new species is closely related to the following three known species of the genus from the Far East: Polycheria amakusaensis Hirayama, 1984, P. japonica Bulycheva, 1952, and P. orientalis Hirayama, 1984. However, Polycheria acercauda sp. nov. can be distinguished from the other congeners by the following combination of characteristics: (1) on antenna 2, the anterior margin of peduncular article 4 is pubescent; (2) on gnathopod 2, the palm is clearly distinct; (3) on uropod 3, the inner ramus is lined with plumose setae; and (4) on the telson, the apices are acute. This is the first report of the genus Polycheria Haswell, 1879 belonging to the family Dexaminidae Leach, 1814 from Korean waters.</P>