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      Four new species of splanchnotrophid copepods (Poecilostomatoida) parasitic on doridacean nudibranchs (Gastropoda, Opistobranchia) from Japan, with proposition of one new genus

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          Abstract

          Abstract

          Four new species of splanchnotrophid copepods are described based on specimens collected from 5 species of doridacean nudibranchs from coastal waters of Japan. They belong to 3 genera, one of which, Majimun gen. n., is new. The parasites and their hosts are as follows: Ceratosomicola japonica sp. n. ex Hypselodoris festiva (A. Adams); Splanchnotrophus helianthus sp. n. ex Thecacera pennigera (Montagu); Splanchnotrophus imagawai sp. n. ex Trapania miltabrancha Gosliner & Fahey; and Majimun shirakawai gen. et sp. n. ex Roboastra luteolineata (Baba) and Roboastra gracilis (Bergh). Ceratosomicola japonica sp. n. is the fifth species of Ceratosomicola and is characterized by the shape and armature of the prosome in females. Both Splanchnotrophus helianthus sp. n. and Splanchnotrophus imagawai sp. n. are differentiated from 4 known congeners by the absence of posterolateral processes or lobes on the prosome in females, and the females of these 2 new species are separated from each other by the shape and armature of the genito-abdomen, the mandible, and the swimming legs. Majimun gen. n. is distinguished from other splanchnotrophid genera by the segmentation of the antennule as well as the combination of the following characters in females: 2 postgenital somites and the shape of the antenna, the mandible and the swimming legs.

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          Most cited references6

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          A Method for Studying the External Anatomy of Copepods

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            Report on Opisthobranchiata from the Abrolhos Islands, Western Australia, with Description of a new parasitic Copepod.

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              • Record: found
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              • Article: not found

              Splanchnotrophid systematics: a case of polyphyly and taxonomic myopia

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                Author and article information

                Contributors
                URI : urn:lsid:zoobank.org:author:8BBFAA46-FD89-4CBB-A7FE-7E64933B162F
                URI : urn:lsid:zoobank.org:author:25F4F960-4D1E-4EE2-B35A-902503FCA18E
                Journal
                Zookeys
                Zookeys
                ZooKeys
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2012
                30 November 2012
                : 247
                : 1-29
                Affiliations
                [1 ]Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan
                [2 ]Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8528, Japan
                Author notes
                Corresponding author: Daisuke Uyeno ( daisuke.uyeno@ 123456gmail.com )

                Academic editor: D. Defaye

                Article
                10.3897/zookeys.247.3698
                3520137
                23275753
                ada20e8c-0768-449f-823b-90778eb7bd89
                Daisuke Uyeno, Kazuya Nagasawa

                This is an open access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC-BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 16 July 2012
                : 14 November 2012
                Categories
                Article

                Animal science & Zoology
                splanchnotrophus,ceratosomicola,majimun,new genus,parasiticcopepoda,sea slugs,splanchnotrophidae

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