A New Species of the Genus <i>Robertgurneya</i> Apostolov & Marinov, 1988 (Copepoda: Harpacticoida: Miraciidae) from a Sublittoral Zone of Jeju Island, Korea
2022
Jisu Yeom | Wonchoel Lee
A new species, <i>Robertgurneya jejuensis</i> sp. nov., was described from sandy sediment samples collected at a depth of 25 m on Mun Island, Jeju, in June 2018. The new species is morphologically similar to <i>Robertgurneya similis similis</i> (Scott A., 1896) and <i>Robertgurneya donghaensis</i> Bang, 2021; this is the second record of the genus <i>Robertgurneya</i> in South Korea. The morphological characteristics of the <i>similis</i> group within the genus <i>Robertgurneya</i>, to which the new species is ascribed, are summarized here. Furthermore, an identification key is provided based on the summary. Molecular identification of the collected specimens, based on the nuclear 18S ribosomal RNA (18S rRNA) and the mitochondrial cytochrome oxidase subunit I fragment, was obtained. Finally, a phylogenetic tree was constructed to present the position of <i>Robertgurneya</i> within the Miraciidae family based on 18S rRNA sequences which is relatively conserved. As a result, the relationship with sister genera morphologically similar to <i>Robertgurneya</i> was also molecularly confirmed.
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