Revision of the genus Canthocamptus (Copepoda: Harpacticoida) with a description of a new species from the Lena River Delta (North-eastern Siberia)
Abstract
The discovery of a new species of the genus Canthocamptus, C. waldemarschneideri sp. nov., in northern Siberia prompted a taxonomic analysis of this genus. In this work, on the basis of cladistic analysis, we show that the genus is not monophyletic. Based on differences in the structure of the endopods on the second pair of male swimming legs, fifth legs of males and females, and caudal rami, we conclude that the Canthocamptus mirabilis species group is a separate genus, Kikuchicamptus gen. nov. Additionally, two species are transferred to the genus Attheyella, and one species, Canthocamptus gibba, is synonymized. The subgenera Canthocamptus (Baikalocamptus) and Canthocamptus (Canthocamptus) are also synonymized. The new species, Canthocamptus waldemarschneideri sp. nov., is most closely related to the American Canthocamptus assimilis Kiefer, 1931 and differs from it in the ornamentation of the abdominal somites and the shape of the caudal setae.
References
Apostolov A. 1969. Copepoda Harpacticoida von Bulgarien. Crustaceana.16 (3): 311–320. https://doi.org/10.1163/156854069X00349
Bang H.W., Baguley J.G. & Moon H. 2015. First record of harpacticoid copepods from Lake Tahoe, United States: two new species of Attheyella (Harpacticoida, Canthocamptidae). ZooKeys 479: 1–24. https://doi.org/10.3897/zookeys.479.8673
Borutzky E.V. 1931. Materialen zur Harpacticidenfauna des Baikalsees II. Zoologischer Anzeiger 93: 263–273.
Borutzky E.V. 1947. Materials on the fauna of Copepoda, Harpacticoida of Lake Baikal. Genus Canthocamptus Westwood. Doklady Akademii Nauk SSSR 58 (8): 1825–1828.
Borutzky E.V. 1952. Crustacea: Freshwater Harpacticoida. Fauna SSSR 3 (4). Izdaniya Akademia Nauk SSSR, Moscow-Leningrad.
Boxshall G.A. & Huys R. 1992. A homage to homology: patterns of copepod evolution. Acta Zoologica 73 (5): 327–334. https://doi.org/10.1111/j.1463-6395.1992.tb01102.x
Chang C.Y. 1998. Redescription of Canthocamptus morimotoi Miura, a stygobiontic harpacticoid species from Korea, with a brief review on C. mirabilis group. Korean Journal of Biological Sciences 2 (4): 427–434. https://doi.org/10.1080/12265071.1998.9647441
Chang C.Y. 2001. Redescription of Canthocamptus mirabilis Štěrba (Copepoda, Harpacticoida), based on the topotypic material from China. Animal Systematics, Evolution and Diversity 17 (1): 1–11.
Chang C.Y. 2002. Taxonomy on Canthocamptus semicirculus and C. coreensis n. sp. (Harpacticoida, Canthocamptidae), with a key to the C. mirabilis species group from South Korea. Animal Systematics, Evolution and Diversity 18 (2): 233–244.
Chang C.Y. 2010. Continental Harpacticoida. Invertebrate Fauna of Korea 21 (4). National Institute of Biological Resources, Ministry of Environment, Seoul.
Chang C.Y. & Ishida Y. 2001. Two new species of Canthocamptus mirabilis group (Copepoda, Harpacticoida, Canthocamptidae) from South Korea. Proceedings of the Biological Society of Washington 114 (3): 667–679.
Chappuis P.A. 1935. Notes sur les Copépodes. 8. Sur la systematique de Canthocamptinae. 9. Sur le Canthocamptinae de Canada. 10. Baikalocamptus Verestschagini Borutzky = Canthocamptus verestschagini (Bor.). Buletinul Societăţii de ştiinţe din Cluj 7: 279–285.
Coker R.E. 1934. Contribution to knowledge of North American freshwater harpacticoid copepod Crustacea. Journal of the Elisha Mitchell Scientific Society 50 (1/2): 75–141.
Coker R.E. & Morgan J. 1940. A new harpacticoid copepod from North Carolina. Journal of the Washington Academy of Sciences 30 (9): 395–398.
Ferrari F.D. & Ivanenko V.N. 2008. The identity of protopodal segments and the ramus of maxilla 2 of copepods (Copepoda). Crustaceana 81: 823–835. https://doi.org/10.1163/156854008784771702
Hamond R. 1987. Non-marine harpacticoid copepods of Australia. I. Canthocamptidae of the genus Canthocamptus Westwood s. lat. and Fibulacamptus, gen. nov., and including the description of a related new species of Canthocamptus from New Caledonia. Invertebrate Systematics 1 (8): 1023–1247. https://doi.org/10.1071/IT9871023
Huys R. & Boxshall G.A. 1991. Copepod Evolution. The Ray Society (Publications), London.
Ishida T. & Kikuchi Y. 1999. Canthocamptus iaponicus (Crustacea: Copepoda: Harpacticoida), and three new species of the genus from Japan. Species Diversity 4 (2): 339–352. https://doi.org/10.12782/specdiv.4.339
Ito T. & Takashio T. 1980. Canthocamptus mirabilis Štěrba (Copepoda, Harpacticoida) from Hokkaido, northern Japan. Annotationes Zoologicae Japonenses 53: 210–219.
Kiefer F. 1931. Kurze Diagnosen neuer Süsswasser-Copepoden. Zoologischer Anzeiger 94 (5/8): 219–224.
Kikuchi Y. & Ishida T. 1994. A species group of genus Canthocamptus (Copepoda: Harpacticoida) in Japan, including descriptions of four new species. Bulletin of the Biogeographical Society of Japan 49: 37–46.
Lang K. 1934. Marine Harpacticiden von der Campbell-Insel und einigen anderen südlichen Inseln. Acta Universitatis Lundensis, New Series 2 (30):1–56.
Lang K. 1948. Monographie der Harpacticiden. Otto Koeltz Science Publishers, Königstein, Germany.
Lilljeborg W. 1902. Tres species novae generis Canthocampti e Novaja Semlja et Sibiria Boreali, sive Trenne nya Arter af Skäktet Canthocamptus från Novaja Semlja och Norra Sibirien. Bihang till Kongliga Svenska Vetenskaps-akademiens Handlingar 28 (4): 9.
Mielke W. 1984. Some remarks on the mandible of the Harpacticoida (Copepoda). Crustaceana 46 (3): 257–260. https://doi.org/10.1163/156854084X00162
Miura Y. 1969. A new harpacticoid copepod from a sandy beach of Lake Biwa. Annotationes Zoologicae Japonenses 42 (1): 40–44.
Moura G. & Pottek M. 1998. Selenopsyllus, a new genus of Cylindropsyllinae (Copepoda, Harpacticoida) from Atlantic and Antarctic deep waters. Senckenbergiana Maritima 28 (4): 185–209. https://doi.org/10.1007/BF03043149
Novikov A. & Sharafutdinova D. 2021. Two new Canthocamptidae (Copepoda, Harpacticoida) from sponges of the Kara and Laptev Seas. Zootaxa 4948 (3): 336–362. https://doi.org/10.11646/zootaxa.4948.3.2
Novikov A.A., Abramova E.N. & Sabirov R.M. 2021. Fauna of freshwater Harpacticoida (Copepoda) in the Lena River Delta. Zoologichesky Zhurnal 100 (3): 264–274. https://doi.org/10.31857/S0044513421010049 [In Russian.]
Okuneva G.L. 1983. New species of Copepoda (Harpacticoida) in the Baikal Lake fauna. Zoologichesky Zhurnal 62 (9): 1343–1352.
Shen C. & Sung T. 1973. The freshwater copepods from three provinces in northeastern China. Acta Zoologica Sinica 19: 35–42.
Spandl H. 1924. Entomostraken von Borneo. Annalen des naturhistorischen Museums in Wien 38: 89–95.
Strimmer K. & von Haeseler A. 1996. Quartet puzzling: a quartet maximum-likelihood method for reconstructing tree topologies. Molecular Biology and Evolution 13 (7): 964–969. https://doi.org/10.1093/oxfordjournals.molbev.a025664
Walter T.C. & Boxshall G. 2021. World of Copepods database. Canthocamptus Westwood, 1836. Available from https://www.marinespecies.org/copepoda/index.php [accessed 5 May 2022].
Wells J.B.J. 2007. An annotated checklist and keys to the species of Copepoda Harpacticoida (Crustacea). Zootaxa 1568 (1): 1–872. https://doi.org/10.11646/zootaxa.1568.1.1
Westwood J.O. 1836. Canthocamptus. In: Partington C.F. (ed.) The British Cyclopaedia of Natural History 2: 227. Orr & Smith, London.
Wilson M.S. 1956. North American harpacticoid copepods: 1. Comments on the known fresh-water species of the Canthocamptidae. 2. Canthocamptus oregonensis, n. sp. from Oregon and California. Transactions of the American Microscopical Society 75 (3): 290–307. https://doi.org/10.2307/3223958
Wilson M.S. 1958. North American harpacticoid copepods 4. Diagnosis of new species of freshwater Canthocamptidae and Cletodidae (genus Huntemannia). Proceedings of the Biological Society of Washington 71 (1): 43–48.
Copyright (c) 2022 Aleksandr Novikov, Dayana Sharafutdinova
This work is licensed under a Creative Commons Attribution 4.0 International License.
Creative Commons Copyright Notices
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are NOT ALLOWED TO post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to taxonomic issues.
