First record of the family Eriopisidae (Crustacea, Malacostraca, Amphipoda) from Southern Sea, Korea with description of one new species

This study aims to discover and document amphipods from Korea, contributing to the clarification of the taxonomy of Korean amphipod species. As part of this effort, a new species belonging to the family Eriopisidae Lowry & Myers, 2013 was collected from sublittoral waters of the Southern Sea, Korea. This study reports the first record of this family from Korean waters.

Monotypic genus Cephalopisella G. Karaman, 1984 consists of the species Cephalopisella propagatio (Imbach, 1967), which has been previously documented in the Northern Yellow Sea and Southeast Asian waters. The new species, Cephalopisella namhaensis sp. nov., is morphologically similar to C. propagatio in having a notch on the anteroventral corner of the cephalic lobe and in lacking sexual dimorphism in gnathopod 2. However, the new species can be distinguished by a relatively short cephalic lobe, the presence of simple setae on article 3 of mandibular palp, and a posteroventrally produced epimeron 3.

This study provides a detailed description and illustration of Cephalopisella namhaensis sp. nov., expanding the known distribution and diversity of the family Eriopisidae.