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      Three new species of the genus Stephos Scott, 1892 (Crustacea, Copepoda, Calanoida, Stephidae) from Jeju Island, Korea

      , 1 , 2 , 3

      ZooKeys

      Pensoft Publishers

      Stephos , new species, benthopelagic, near bottom, Jeju Island

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          Abstract

          During general field surveys carried out recently to collect benthopelagic copepods from near the substrate of the shallow waters off Jeju Island, Korea, a few specimens of three new species of Stephos Scott, 1892, were collected. The new species are placed in the genus Stephos because of the following combination of features: absence of seta on the basal exite of maxillule, and male right leg 5 ending in an unarmed claw-like and/or mitten-like segment. Stephos jejuensis sp. nov. can be distinguished from its congeners by body length 0.92 mm, left side of the female genital double-somite with protruding lobes, antennule that extends beyond the distal area of the genital double-somite, and the male leg 5 terminal complex. Stephos concavus sp. nov. can be distinguished from its congeners by the genital double-somite with protruding lobes on both sides, and the presence of larger spinules on the distomedial margin of leg 5. Stephos fortipes sp. nov. can be distinguished from its congeners by its longer body length, 1.12 mm long in the female, antennules that extend to the end of the genital double-somite, and the presence of a covered row of minute spinules on the ventral surface of the genital operculum in the female. Until now, 35 species of stephids were known worldwide.

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          Most cited references 20

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          Effects of moonlight on the vertical migration patterns of demersal zooplankton

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            A Method for Studying the External Anatomy of Copepods

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              • Abstract: not found
              • Article: not found

              The Identity of Protopodal Segments and the Ramus of Maxilla 2 of Copepods (Copepoda)

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                Author and article information

                Contributors
                Journal
                Zookeys
                Zookeys
                2
                urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2020
                30 June 2020
                : 944
                : 1-30
                Affiliations
                [1 ] South Sea Fisheries Research Institute, National Institute of Fisheries Science, Yeosu 59780, South Korea National Fisheries Institute of Fisheries Science Yeosu South Korea
                [2 ] Department of Environmental Oceanography, Chonnam National University, Yeosu 596166, South Korea Chonnam National University Yeosu South Korea
                [3 ] Department of Oceanography, Chonnam National University, Gwangju 61186, South Korea Chonnam National University Gwangju South Korea
                Author notes
                Corresponding author: Seong Yong Moon ( msy7744@ 123456korea.kr )

                Academic editor: D. Defaye

                Article
                49361
                10.3897/zookeys.944.49361
                7340627
                Seong Yong Moon, Ho Young Soh, Dae Hyun Cho

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Categories
                Research Article
                Copepoda
                Systematics
                Taxonomy
                Korea
                South Korea

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