The genus Eurycletodes Sars, 1909 is reported for the first time in Korea. A new species of the genus Eurycletodes was collected from Hansando Island, South Sea of Korea. So far, Eurycletodes comprises 27 species, with no previously recorded species reported in East Asia, including Korea. Eurycletodes (Oligocletodes) vadumus sp. nov. is morphologically most closely related to E. (O.) denticulatus Por, 1967, E. (O.) aculeatus Sars, 1920, and E. (O.) diva Menzel, 2011, but clearly distinguishable from the others based on the following morphological characteristics: absence of A2 exopodal seta, A1 last segment with two inner setae, P4 exp-3 proximal inner seta modified, the ratio of length and of caudal rami (1.6 times), and mandibular palp with three setae. Together with the new species, the number of valid species in this genus has risen to 28. A key to species of the genus Eurycletodes is provided.
Becker, K.H., W. Noodt and G. Schriever. 1979. Eidonomie und Taxonomie abyssaler Harpacticoidea (Crustacea, Copepoda)Teil 2. Paramesochridae, Cylindropsyllidae und Cletodidae. Meteor Forschungsergebnisse, Reihe D - Biologie 31:1-37.
Burgess, R. 2001. An improved protocol for separating meiofauna from sediments using colloidal silica sols. Marine Ecology Progress Series 214:161-165.
George, K.H. 2004. Description of two new species of Bodinia, a new genus incertae sedis in Argestidae Por, 1986(Copepoda, Harpacticoida), with reflections on argestid colonization of the Great Meteor Seamount plateau. Organisms Diversity and Evolution 4:241-264.
Gómez, S. 2018. New species of Eurycletodes Sars, 1909 and Odiliacletodes Soyer, 1964 from the deep Gulf of California (Copepoda, Harpacticoida, Argestidae). ZooKeys 764:1-25.
Hicks, G.R.F. and B.C. Coull. 1983. The ecology of marine meiobenthic harpacticoid copepods. Oceanography and Marine Biology Annual Review 21:67-175.
Huys, R., J.M. Gee, C.G. Moore and R. Hamond. 1996. Marine and Brackish Water Harpacticoid copepods. Part 1. In Synopses of the British Fauna (New Series). Field Studies Council: Shrewsbury, UK.
Lang, K. 1944. Monographie der Harpacticiden (Vorläufige Mitteilung). Almqvist & Wiksells Boktryckeri Ab, Uppsala.
Menzel, L. and K.H. George. 2012. Copepodid and adult Argestidae Por, 1986 (Copepoda: Harpacticoida) in the southeastern Atlantic deep sea: diversity and community structure at the species level. Marine Biology 159:1223-1238.
National Institute of Biological Resources. 2019. Discovery of Korean Indigenous Species (Invertebrates). NIBR, Korea (in Korean).
Por, F.D. 1967. Level bottom Harpacticoida (Crustacea, Copepoda)from Elat (Red Sea), Part I. Israel Journal of Zoology 16:101-165.
Por, F.D. 1986. A re-evaluation of the family Cletodidae Sars, Lang (Copepoda, Harpacticoida). Syllogeus 58:420-425.
Sars, G.O. 1909. Copepoda Harpacticoida. Parts XXV &XXVI Laophontidae (concluded), Cletodidae (part). An account of the Crustacea of Norway with short descriptions and figures of all the species. 5:277-304.
Sars, G.O. 1920. Copepoda Supplement. Parts III & IV. Harpacticoida (continued). An account of the Crustacea of Norway, with short descriptions and figures of all the species 7:25-52+pls. 17-32.
Song, S.J., J. Park, B.O. Kwon, J. Ryu and J.S. Khim. 2012. Ecological checklist of the marine and brackish-water harpacticoid copepod fauna in Korean waters. Zoological Studies 51(8):1397-1410.
Wells, J.B.J. 2007. An annotated checklist and keys to the species of Copepoda Harpacticoida (Crustacea). Zootaxa 1568(1):1-872.