Abstract
Genus Camptocercus is represented in North America by four species. Camptocercus rotundus Herrick, 1882 is proved to be a valid species and is redescribed here. C. rotundus differs from its sibling species, neotropical C. dadayi Stingelin, 1913, in morphology of the postabdominal claw, presence of posteroventral denticles on valves, and morphology of the male postabdomen. C. rotundus is distributed in South Canada and North USA from Pacific to Atlantic coast, whereas C. dadayi is found in Mexico and South-East USA. C. oklahomensis Mackin, 1930 is found in Central USA. C. streletskaye Smirnov, 1998, previously known from Chukotka and Magadan Area of Russia, was found in Alaska for the first time.
References
Bekker, E.I., Kotov, A.A. & Taylor, D.J. (2012) A revision of the subgenus Eurycercus (Eurycercus) Baird, 1843 emend. nov. (Cladocera: Eurycercidae) in the Holarctic with the description of a new species from Alaska. Zootaxa, 3206, 1–40.
Bekker, E.I., Novichkova, A.A. & Kotov, A.A. (2014) New findings of Eurycercus Baird, 1843 (Cladocera: Anomopoda) in the Eastern Palaearctic. Zootaxa, 3895 (2), 297–300.
https://doi.org/10.11646/zootaxa.3895.2.11Belyaeva, M. & Taylor, D.J. (2009) Cryptic species within the Chydorus sphaericus species complex (Crustacea: Cladocera) revealed by molecular markers and sexual stage morphology. Molecular Phylogenetics and Evolution, 50, 534–546.
Berner D.B. (1997) The cladoceran collection of the National Museum of Natural History, Smithsonian Institution, Washington, D.C. Proceedings of the Biological Society of Washington, 110 (4), 560–568.
Birge, E.A. (1892) List of Crustacea Cladocera from Madison, Wisconsin. Transactions of the Wisconsin Academy of Science and Arts Letters, 9, 379–398.
Birge, E.A. (1893) Notes on Cladocera. III. Transactions of the Wisconsin Academy of Science, Arts and Letters, 9, 275–317.
Ciros-Perez, J. & Elías-Gutiérrez, M. (1996) Nuevos registros de cladoceros (Crustacea: Anomopoda) en México. Revista Biologica Tropical, 44, 297–304.
Chengalath, R. (1982) A faunistic and ecological survey of the littoral Cladocera of Canada. Canadian Journal of Zoology, 60, 2668–2682.
https://doi.org/10.1139/z82-343Chengalath, R. (1987) The distribution of chydorid Cladocera in Canada. Hydrobiologia, 145, 151–157.
https://doi.org/10.1007/bf02530275Daday, E. von (1902) Mikroskopische Süswasserthiere aus Patagonien, gesammelt von Dr. Filippo Silvestri im Jahre 1899 und 1900. Természetrajzi Füzetek, Budapest, 25, 201–310.
Daday, E. von (1905) Untersuchungen über die Süsswasser-Mikrofauna Paraguays. Zoologica, Stuttgart, 18 (44), 1–374.
Dodson, S.I. & Frey, D.G. (1991) Cladocera and other Branchiopoda. In: Ecology and Classification of North American Freshwater Invertebrates. Academic Press, Inc., Toronto, pp. 723–786.
Daday, E. von (1905) Untersuchungen über die Süsswasser-Mikrofauna Paraguays. Zoologica, Stuttgart, 18 (44), 1–374.
Elías-Gutiérrez, M., Ciros-Pérez, J., Gutiérrez-Aguirre, M. & Cervantes-Martínez, A. (1997) A checklist of the littoral cladocerans from Mexico, with descriptions of five taxa recently recorded from the Neovolcanic Province. Hydrobiologia, 360, 63–73.
https://doi.org/10.1023/A:1003169205526Frenzel, P. (1987) Theodor Stingelin (1872–1932): Typen und Status seiner Cladoceren-Taxa. Archiv für Hydrobiologie, 74 (Supplement), 488–507.
Frey, D.G. (1982) Questions concerning cosmopolitanism in Cladocera. Archiv für Hydrobiologie, 93, 484–502.
Frey, D.G. (1985) A new species of the Chydorus sphaericus group (Cladocera, Chydoridae) from Western Montana. Internationale Revue der gesamten Hydrobiologie und Hydrographie, 70, 3–20.
Frey, D.G. (1987) The taxonomy and biogeography of the Cladocera. Hydrobiologia, 145, 5–17.
https://doi.org/10.1007/bf02530260Herrick, C.L. (1882) Notes on some Minnesota Cladocera. Geological and Natural History Survey of Minnesota, 10th Annual Report, 235–252.
Herrick, C.L. (1884) A final report on the Crustacea of Minnesota. Geological and Natural History Survey of Minnesota, 12th Annual Report, 1–191.
Jeong, H.G., Kotov, A.A., Lee, W., Jeong, R. & Cheon, S. (2015) Diversity of freshwater Cladoceran species (Crustacea in South Korea). Journal of Ecology and Environment, 38, 361–366.
https://doi.org/10.5141/ecoenv.2015.037Ji, G.H., Xiang, X.F., Chen, S.Z., Yu, G.L., Kotov, A.A. & Dumont, H.J. (2015) Annotated Checklist of Chinese Cladocera (Crustacea: Branchiopoda). Part II. Order Anomopoda (families Macrotrichidae, Eurycercidae and Chydoridae). Zootaxa, 4044 (2), 241–269.
https://doi.org/10.11646/zootaxa.4044.2.4
Klimovsky, А.I., Bekker, E.I., Sinev, A.Y., Korovchinsky N.M., Smirnov, N.N. & Kotov, А.А. (2015) Cladocera (Сrustacea, Branchiopoda) of Central Yakutia. 4.Taxonomic-faunal and zoogeographical analyses. Zoologichesky zhurnal, 94 (12), 1367–1378.
Kotov A.A. (2009) A revision of Leydigia Kurz, 1875 (Anomopoda, Cladocera, Branchiopoda), and subgeneric differentiation within the genus. Zootaxa, 2082, 1–68.
Kotov, А.А. (2016) Faunisitic complexes of Cladocera (Crustacea, Branchiopoda) from East Siberia and the Russian Far East. Zoologichesky zhurnal, 94 (12), 1367–1378.
Kotov, A.A., Ishida, S. & Taylor, D.J. (2009) Revision of the genus Bosmina Baird, 1845 (Cladocera: Bosminidae), based on evidence from male morphological characters and molecular phylogenies. Zoological Journal of the Linnean Society, 156 (1), 1–56.
Kotov, A.A., Karabanov, D.P., Bekker, E.I.,Neretina, T.V. & Taylor, D.J. (2016) Phylogeography of the Chydorus sphaericus Group (Cladocera: Chydoridae) in the Northern Palearctic. PLoS ONE, 11 (12), e0168711.
https://doi.org/10.1371/journal.pone.0168711Kotov A.A., Sinev, A.Y. & Berrios, V.L. (2010a) The Cladocera (Crustacea: Branchiopoda) of six high altitude water bodies in the North Chilean Andes, with discussion of Andean endemism. Zootaxa, 2430, 1–66
Popova, E.V., Petrusek, A., Kořнnek, V., Mergeay, J., Bekker, E.I., Galimov, Y.R., Neretina, T.V., Taylor, D.J. & Kotov, A.A. (2016) Revision of the Old World Daphnia (Ctenodaphnia) similis group (Cladocera: Daphniidae). Zootaxa, 4161 (1), 1–40.
https://doi.org/10.11646/zootaxa.4161.1.1
Rey, J. & Vasquez, E. (1986) Note taxonomique sur Camptocercus dadayi Stingelin, 1913, comb. nov. (Crustacea, Cladocera). Annales de Limnologie, 22, 177–180.
https://doi.org/10.1051/limn/1986015Sinev, A.Y. (1998) Alona ossiani sp. n., a new species of the Alona affinis complex from Brazil, deriving from the collection of G. O. Sars (Anomopoda Chydoridae). Arthropoda Selecta, 7, 103–110.
Sinev, A.Y. (1999) Alona werestschagini sp. n., new species of genus Alona Baird, 1843, related to A. guttata Sars, 1862 (Anomopoda, Chydoridae). Arthropoda Selecta, 8 (1), 23–30.
Sinev, A.Y. (2009a) Discrimination between two sibling species of Acroperus (Baird, 1843) from the Palearctic (Cladocera: Anomopoda: Chydoridae). Zootaxa, 2176, 1–21.
Sinev, A.Y. (2009b) Notes on morphology and taxonomic status of some North American species of the genus Alona Baird, 1843 (Cladocera: Anomopoda: Chydoridae). Fundamental and Applied Limnology, 175 (1), 59–77.
https://doi.org/10.1127/1863-9135/2009/0175-0059Sinev, A.Y. (2011) Redescription of the rheophilous cladocera Camptocercus vietnamensis Than, 1980 (Cladocera: Anomopoda: Chydoridae). Zootaxa, 2934, 53–60.
Sinev, A.Y. (2013) Cladocerans of Alona affinis group (Cladocera: Anomopoda: Chydoridae) from North America. Zootaxa, 3693 (3), 329–343.
https://doi.org/10.11646/zootaxa.3693.3.3Sinev, A.Y. (2014) A comparative morphological analyses of four species of Camptocercus Baird, 1843 (Cladocera: Anomopoda: Chydoridae). Zootaxa, 3895 (2), 183–207.
https://doi.org/10.11646/zootaxa.3895.2.3Sinev, A.Y. (2015a) Morphology and phylogenetic position of three species of genus Camptocercus Baird, 1843 (Cladocera: Anomopoda: Chydoridae). Zootaxa, 4040 (2), 169–186.
https://doi.org/10.11646/zootaxa.4040.2.4Sinev, A.Y. (2015b) Revision of the pulchella-group of Alona s. lato leads to its translocation to Ovalona Van Damme et Dumont, 2008 (Branchiopoda: Anomopoda: Chydoridae). Zootaxa, 4044 (4), 451–492.
https://doi.org/10.11646/zootaxa.4044.4.1Sinev A.Y. (2016) Key for identification of Cladocera of the subfamily Aloninae (Anomopoda: Chydoridae) from South-East Asia. Zootaxa, 4200 (4), 451–486.
Sinev, A.Y. & Atroschenko, M.M. (2011) Revision of the genus Alonopsis Sars, 1862 and its position within Aloninae (Cladocera: Anomopoda: Chydoridae). Zootaxa, 2800, 1–17.
Sinev, A.Y. & Dumont, H.J. (2016) Revision of costata-group of Alona s. lato (Cladocera: Anomopoda: Chydoridae) confirms its generic status. European Journal of Taxonomy, 233, 1–38.
https://doi.org/10.5852/ejt.2016.223Sinev A.Y. & Kotov, A.A. (2014) Revision of the Holarctic genus Rhynchotalona Norman, 1903 (Anomopoda: Chydoridae). Zootaxa, 3841 (2), 188–210.
https://doi.org/10.11646/zootaxa.3841.2.2Sinev, A.Y. & Silva-Briano, M. (2012) Cladocerans of genus Alona Baird, 1843 (Cladocera: Anomopoda: Chydoridae) and related genera from Aguascalientes State, Mexico. Zootaxa, 3569, 1–24.
Sinev, A.Y. & Zawisza, E. (2013) Comments on cladocerans of crater lakes of the Nevado de Toluca Volcano (Central Mexico), with the description of a new species, Alona manueli sp. nov. Zootaxa, 3647 (2), 390–400.
https://doi.org/10.11646/zootaxa.3647.2.10Smirnov, N.N. (1971) Chydoridae fauny mira. Fauna USSR. Rakoobraznie, 1. Leningrad, 531 pp. [English translation: Chydoridae of the world. Israel Program for Scientific Translations, Jerusalem, 1974]
Smirnov, N.N. (1998) A revision of the genus Camptocercus (Anomopoda, Chydoridae, Aloninae). Hydrobiologia, 386, 63–83.
https://doi.org/10.1023/A:1003524414799Stingelin, T. (1913) Cladoceren aus den Gebirge von Kolumbien. Mémoires de la Société Neuchâteloise des Sciences Naturelles, 5, 600–638.
Tiang-nga, S., Sinev, A.Y. & Sanoamuang, L. (2016) A new species of the genus Anthalona Van Damme, Sinev & Dumont, 2011 (Cladocera: Anomopoda: Chydoridae) from North-East Thailand. Zootaxa, 4150 (1), 93–100.
http://doi.org/10.11646/zootaxa.4150.1.6Xu, S., Hebert, P.D.N., Kotov, A.A. & Cristescu, M.E. (2009) The non-cosmopolitanism paradigm of freshwater zooplankton: insights from the global phylogeography of the predatory cladoceran Polyphemus pediculus (Crustacea, Onychopoda). Molecular Ecology, 18 (24), 5161–5179.
https://doi.org/10.1111/j.1365-294x.2009.04422.x