Symbiotic copepods (Cyclopoida and Siphonostomatoida) collected by light trap from Korea Author Lee, Jimin https://orcid.org/0000-0001-9004-8275 Marine Ecosystem and Biological Research Center, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea Author Chang, Cheon Young https://orcid.org/0000-0001-5557-7120 Department of Biological Science, Daegu University, Gyeongsan 38453, Republic of Korea Author Kim, Il-Hoi https://orcid.org/0000-0002-7332-0043 Korea Institute of Coastal Ecology, 302 - 802, Seokcheon-ro 397, Bucheon 14449, Republic of Korea ihkim@gwnu.ac.kr text ZooKeys 2022 2022-07-28 1115 1 71 http://dx.doi.org/10.3897/zookeys.1115.83266 journal article http://dx.doi.org/10.3897/zookeys.1115.83266 1313-2970-1115-1 C3E233F10EF74D2DBD4AA32AE7C4DF5E 1AB765B8065B5504A31014D2B0937E01 Hemicyclops parilis Moon & Kim, 2010 Material examined. Two ♀♀ , Site 11, 20 Aug. 2020; 1 ♀ , Site 12, 16 Mar. 2013; 2 ♀♀ , 1 ♂ , Site 15, 04 Jul. 2020; 1 ♀ , Site 20, 05 Jun. 2020; 2 ♀♀ , 8 ♂♂ , Site 26, 06 Jul. 2016; 1 ♂ , Site 33, 11 Aug. 2020. Remarks. Due to the close relatedness of this species to H. gomsoensis Ho & Kim, 1992, Moon and Kim (2010) compared it in detail with the latter species in the original description. Moon and Kim (2010) found H. parilis from burrows of unknown invertebrates on the south coast of Korea. The host of this copepod has turned out to be the decapod crustacean Upogebia issaeffi (Balss, 1913). We collected it at six collection sites in this study, which indicates that the decapod host is likely to occur at those sites.