Journal of Species Research

The National Institute of Biological Resources (국립생물자원관)
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One new Sclerochilus(Praesclerochilus) Sars(Ostracoda) species from Korea

  • Le, Van Anh Thi (Department of Life Science, College of Natural Sciences, Hanyang University) ;
  • Yoo, Hyunsu (Marine Environmental Research and Information Laboratory (MERIL)) ;
  • Karanovic, Ivana (Department of Life Science, College of Natural Sciences, Hanyang University)
  • Received : 2020.10.26
  • Accepted : 2021.05.03
  • Published : 2021.08.31
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Abstract

Sclerochilus Sars, 1866 is the most diverse genus of the family Bythocytheridae, one of the longest surviving groups of extant ostracods, and the oldest representative of the superfamily Cytheroidea. It has a worldwide distribution at various marine depths, and it includes three subgenera: Fascichilus Schornikov, 1981; Praesclerochilus Schornikov, 1981; and Sclerochilus Sars, 1866. We describe Sclerochilus(Praesclerochilus) jejuensis sp. nov. from Jeju Island, South Korea, raising the number of known Praesclerochilus species to 13. Although most species belonging to this subgenus have very similar carapace shape, the new species differs morphologically from its most similar congeners, S. (P.) mukaishimensis Okubo, 1977; S. (P.) pruniformis Schornikov, 1981; and S. (P.) ochotensis Schornikov, 1981, by the large ventral process on the hemipenis. So far, 29 Sclerochilus species have been reported from South Korea, only one of which was named, but for which no descriptive information was provided. Therefore, this is the first taxonomic report of a Sclerochilus species from South Korea.

Keywords

Acknowledgement

The study is supported by the National Research Foundation of Korea (grant no: 2016R1D-1A1B01009806), National Institute of Biological Resources (NIBRIV0000862858), the BK21 plus program (Eco-Bio Fusion Research Team, 22A20130012352) through the National Research Foundation (Ministry of Education of Korea).

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