First record of the family Calliopiidae (Crustacea, Malacostraca, Amphipoda) from Korean waters, with description of new species Calliopius ulleungensis sp. nov.

By

Kim, Kyung-Won
Kim, Young-Hyo

Type

Article

Date of Publication

2024

Original Publication

ZooKeys

Volume

1221

Pages

297--307

Subjects

Amphipod , calliopiid , key , Morphology , new record , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1221.139066

 

Abstract

A new species of the family Calliopiidae was collected from the East Sea of Korea. Calliopius ulleungensissp. nov. is similar to C. columbianus Bousfield & Hendrycks, 1997 in having numerous calceoli on the posteromedial margins of antennae and a weakly carinate body. However, the new species can be distinguished from C. columbianus by the shorter process on peduncular article 3 of antenna 1, subrectangular eyes, and fewer articles in the antenna flagellum. This species, along with C. ezoensisShimoji et al. 2020, occurs in the Western Pacific. The females of the two species are morphologically very similar, but the males of C. ezoensis are easily distinguishable, as the gnathopod 1 is larger than gnathopod 2. The new species is fully illustrated and extensively compared with related species. In this paper, both Calliopius and Calliopiidae are reported from Korea for the first time. A key to species of Calliopius is also provided.