Abstract
Recently particular attention of cladocerologists has focussed on a subtropical-southern temperate zone of the Far East of Eurasia comprising a center of water flea (Crustacea: Cladocera) endemism. Two endemic taxa were described previously from Jeju Island (Republic of Korea), but still the cladocerans of this island are poorly known. The aim of this communication is to describe a new species of Coronatella (Coronatella) Dybowski & Grochowski, 1894 (Anomopoda: Chydoridae) and discuss diagnostic characters of this taxon with reference to their diagnostic value in other cladoceran groups. Surprisingly, all characters discriminating C. (C.) jejuana sp. nov. from closest C. (C.) rectangula (Sars, 1862) are from the set suggested for chydorid species delimitation by Nikolai Smirnov more than 50 years ago. Therefore, a search for diagnostic characters of a potentially new taxon could concentrate on just some potentially important structures. However, a program of detailed redescriptions of previously established taxa is necessary for an adequate description of new taxa which are congeners of the former, and such comprehensive work is still in its infancy.
References
Alonso, M. (1996) Crustacea: Branchiopoda. Consejo Superior de Investigaciones Cientificas, Madrid, 486 pp.
Alonso, M., Neretina A.N. & Ventura, M. (2021) Ceriodaphnia smirnovi (Crustacea: Cladocera), a new species from the Mediterranean region, and a phylogenetic analysis of the commonest species. Zootaxa, 4974 (1), 1–46. https://doi.org/10.11646/zootaxa.4974.1.1
Alonso, M., Neretina, A.N., Sanoamuang, L., Saengphan, N. & Kotov, A.A. (2019) A new species of Moina Baird, 1850 (Cladocera: Moinidae) from Thailand. Zootaxa, 4554 (1), 199–218. https://doi.org/10.11646/zootaxa.4554.1.6
Berner, D.B. (1987) Significance of head and carapace pores in Ceriodaphnia (Crustacea, Cladocera). Hydrobiologia, 145, 75–84. https://doi.org/10.1007/BF02530267
Berner, D.B. & Rakhmatullaeva, G. (2001) A new species of Ceriodaphnia from Uzbekistan and Kazakhstan. Hydrobiologia, 442, 29–39. https://doi.org/10.1023/A:1017586106850
Dumont, H.J. & Negrea, S.V. (2002) Introduction to the class Branchiopoda. In: Dumont, H.J. (Eds.), Guides to the identification of the microinvertebrates of the continental waters of the world. Vol. 19. Backhuys Publishers, Leiden, 398 pp.
Elías-Gutiérrez, M. & Valdez-Moreno, M. (2008) A new cryptic species of Leberis Smirnov, 1989 (Crustacea, Cladocera, Chydoridae) from the Mexican semi-desert region, highlighted by DNA barcoding. Hidrobiologica, 18, 63–74.
Forró, L., Korovchinsky, N.M., Kotov, A.A. & Petrusek, A. (2008) Global diversity of cladocerans (Cladocera; Crustacea) in freshwater. Hydrobiologia, 595, 177–184. https://doi.org/10.1007/s10750-007-9013-5
Frey, D.G. (1959) The taxonomic and phylogenetic significance of the head pores of the Chydoridae (Cladocera). Internationale Revue der gesamten Hydrobiologie und Hydrographie, 44, 27–50. https://doi.org/10.1002/iroh.19590440104
Fryer, G. (1963) The functional morphology and the feeding mechanism of the chydorid cladoceran Eurycercus lamellatus (O. F. Müller). Transactions of the Royal Society of Edinburgh, 65, 335–381. https://doi.org/10.1017/S0080456800012588
Fryer, G. (1968) Evolution and adaptive radiation in the Chydoridae (Crustacea: Cladocera): a study in comparative functional morphology and ecology. Philosophical Transactions of the Royal Society of London, Series B, Biological Sciences, 254, 221–385. https://doi.org/10.1098/rstb.1968.0017
Fryer, G. (1974) Evolution and adaptive radiation in the Macrothricidae (Crustacea, Cladocera): a study in comparative functional morphology and ecology. Philosophical Transactions of the Royal Society of London, Series B, Biological Sciences, 269, 137–274. https://doi.org/10.1098/rstb.1974.0044
Garibian, P.G., Neretina, A.N., Korovchinsky, N.M., Sinev, A.Y., Tchabovsky, A.V., Kotov, A.A. & Smirnov, N.N. (2021) The Southern Part of Russian Far East and Korean Peninsula as a Transition Zone between the Boreal and Tropical Faunas of the Waterfleas (Cladocera, Crustacea). Zoologicheskiy Zhurnal, 99, 1094–1109. https://doi.org/10.31857/S0044513420100086
Ishida, S. & Taylor, D.J. (2007) Mature habitats associated with genetic divergence despite strong dispersal ability in an arthropod. BMC Evolutionary Biology, 7 (52). [published online] https://doi.org/10.1186/1471-2148-7-52
Ishida, S., Takahashi, A., Matsushima, N., Yokoyama, J., Makino, W., Urabe, J. & Kawata, M. (2011) The long-term consequences of hybridization between the two Daphnia species, D. galeata and D. dentifera, in mature habitats. BMC Evolutionary Biology, 11 (209). [published online] https://doi.org/10.1186/1471-2148-11-209
Jeong, H.G., Kotov, A.A. & Lee, W. (2013) A new species of the genus Pleuroxus Baird (Cladocera: Anomopoda: Chydoridae) from Jeju Island, South Korea. Zootaxa, 3666 (1), 31–40. https://doi.org/10.11646/zootaxa.3666.1.3
Jeong, H.G, Kotov, A.A. & Lee, W. (2014) Checklist of the freshwater Cladocera (Crustacea: Branchiopoda) of South Korea. Proceedings of the Biological Society of Washington, 127, 216–228. https://doi.org/10.2988/0006-324X-127.1.216
Ji, 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
Korovchinsky, N.M. (1996) How many species of Cladocera are there? Hydrobiologia, 321 (3), 191–204. https://doi.org/10.1007/BF00143750
Korovchinsky, N.M. (2006) The Cladocera (Crustacea: Branchiopoda) as a relict group. Zoological Journal of the Linnean Society, 147, 109–124. https://doi.org/10.1111/j.1096-3642.2006.00217.x
Korovchinsky, N.M. (2012) A new species of the genus Diaphanosoma Fischer, 1850 (Crustacea: Cladocera: Sididae) from Japan. Limnology, 14 (1), 13–18. https://doi.org/10.1007/s10201-012-0377-5
Korovchinsky, N.M., Kotov, A.A., Sinev, A.Y., Neretina, A.N. & Garibian, P.G. (2021) Water fleas (Crustacea: Cladocera) of North Eurasia. Vol. 2. KMK Press, Moscow, 544 pp.
Korovchinsky, N.M. & Sheveleva, N.G. (2011) A cladoceran similar to the American Diaphanosoma brevireme Sars, 1901 (Crustacea: Cladocera: Sididae) found in the Russian Far East. Arthropoda Selecta, 20 (3), 145–148. https://doi.org/10.15298/arthsel.20.3.01
Kotov, A.A. (2006) Adaptations of the Anomopoda (Cladocera) for benthic mode of life. Zoologichesky Zhurnal, 85, 1043–1059. https://doi.org/10.1134/S0013873806110157
Kotov, A.A. (2013) Morphology and phylogeny of the Anomopoda (Crustacea: Cladocera). KMK Press, Moscow, 638 pp.
Kotov, A.A. (2015) A critical review of the current taxonomy of the genus Daphnia O. F. Müller, 1785. Zootaxa, 3911 (2), 184–200. https://doi.org/10.11646/zootaxa.3911.2.2
Kotov, A.A. & Boikova, O.S. (2001) Study of the late embryogenesis of Daphnia (Anomopoda,’Cladocera‘, Branchiopoda) and a comparison of development in Anomopoda and Ctenopoda. Hydrobiologia, 442, 127-143. https://doi.org/10.1023/A:1017594402114
Kotov, A.A., Garibian, P.G., Bekker, E.I., Taylor, D.J. & Karabanov, D.P. (2021) A new species group from the Daphnia curvirostris species complex (Cladocera: Anomopoda) from the eastern Palaearctic: taxonomy, phylogeny and phylogeography. Zoological Journal of the Linnean Society, 191, 772–822. https://doi.org/10.1093/zoolinnean/zlaa046
Kotov, A.A., Jeong, H.J. & Lee, W. (2012) Cladocera (Crustacea: Branchiopoda) of the south-east of the Korean Peninsula, with twenty new records for Korea. Zootaxa, 3368 (1), 50–90. https://doi.org/10.11646/zootaxa.3368.1.4
Kotov, A.A. & Sinev, A.Y. (2011) Cladocera (Crustacea, Branchiopoda) of the Zeya basin (Amurskaya Area, Russian Federation). 2. Descriptions of new taxa. Zoologichesky Zhurnal, 90, 272–284.
Kotov, A.A., Sinev, A.Y., Garibian, P.G., Neretina, A.N., Jeong, H.G., Lee, W., Chae, K.S. & Min, G.S. (2017) Recent progress in studies of the Cladocera (Crustacea: Branchiopoda) of South Korea with seven new records for the Korean Peninsula. Journal of Species Reseacrch, 6, 227–246.
Kotov, A.A., Sinev, A.Y., Korovchinsky, N.M., Smirnov, N.N., Bekker, E.I. & Sheveleva, N.G. (2011) Cladocera (Crustacea, Branchiopoda) of the Zeya basin (Amurskaya Area, Russian Federation). 1. New taxa for fauna of Russia. Zoologichesky Zhurnal, 90, 131–142.
Kotov, A.A. & Štifter, P. (2006) Cladocera: family Ilyocryptidae (Branchiopoda: Cladocera: Anomopoda). In: Dumont, H.J. (Eds.), Guides to the identification of the microinvertebrates of the continental waters of the world, Vol. 22. Kenobi Productions, Ghent and Backhuys Publishers, Leiden, 172 pp.
Maruoka, N., Ohtsuki, H., Makino, W. & Urabe, J. (2018) Rediscovery after almost 120 Years: Morphological and genetic evidence supporting the validity of Daphnia mitsukuri (Crustacea: Cladocera). Zoological Science, 35 (5), 468–475. https://doi.org/10.2108/zs170081
Neretina, A.N., Karabanov, D.P., Sacherov, V. & Kotov, A.A. (2021) Unexpected mitochondrial lineage diversity within the genus Alonella Sars, 1862 (Crustacea: Cladocera) across the Northern Hemisphere. PeerJ, 9, e10804. https://doi.org/10.7717/peerj.10804
Orlova-Bienkowskaja, M.Y. (2001) Daphniidae: genus Simocephalus. Guides to the identification of the microinvertebrates of the continental waters of the World. Vol. 17. Backhuys, Leyden, 130 pp.
Sacherová, V. & Hebert, P.D.N. (2003) The evolutionary history of the Chydoridae (Crustacea: Cladocera). Biological Journal of the Linnean Society, 79, 629–643. https://doi.org/10.1046/j.1095-8312.2003.00216.x
Sinev, A.Y. (2009a) Discrimination between two sibling species of Acroperus Baird, 1843 from the Palearctic (Cladocera: Anomopoda: Chydoridae). Zootaxa, 2176 (1), 1–21. https://doi.org/10.11646/zootaxa.2176.1.1
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—Archiv für Hydrobiologie, 175, 59–77. https://doi.org/10.1127/1863-9135/2009/0175-0059
Sinev, A.Y. (2016) Key for identification of Cladocera of the subfamily Aloninae (Anomopoda: Chydoridae) from South-East Asia. Zootaxa, 4200 (4), 451–486. https://doi.org/10.11646/zootaxa.4200.4.1
Sinev, A.Y. (2020) Revision of the elegans-group of Alona s. lato and its status as a subgenus of Coronatella Dybowski & Grochowski, 1894 (Cladocera: Anomopoda: Chydoridae). Zootaxa, 4732 (2), 501–526. https://doi.org/10.11646/zootaxa.4732.4.1
Sinev A.Y. (2022) Redescription of two Australian cladocerans of the subfamily Aloninae Dybowski & Grochowski (Ccladocera: Anomopoda: Chydoridae). Zootaxa, 5124 (2), 188–204. https://doi.org/10.11646/zootaxa.5124.2.4
Sinev, A.Y., Gu, Y. & Han, B. (2020a) Winter-Spring fauna of Cladocera of Dali Bai Autonomous Prefecture, Yunnan Province, China. Limnetica, 39, 621–638. https://doi.org/10.23818/limn.39.40
Sinev, A.Y., Karabanov, D.P. & Kotov, A.A. (2020b) A new North Eurasian species of the Alona affinis complex (Cladocera: Chydoridae). Zootaxa, 4787 (1), 115–137. https://doi.org/10.11646/zootaxa.4767.1.5
Sinev, A.Y. & Kotov, A.A. (2012) New and rare Aloninae (Cladocera: Anomopoda: Chydoridae) from Indochina. Zootaxa, 3334 (1), 1–28. https://doi.org/10.11646/zootaxa.3334.1.1
Sinev, A.Y. & López-Blanco, C. (2018) А new species of Alona Baird, 1843 (Cladocera: Chydoridae) from the ancient Lake Ohrid. Zootaxa, 4526 (4), 434–446. https://doi.org/10.11646/zootaxa.4526.4.2
Sinev, A.Y. & Shiel, R.J. (2012) Extremalona timmsi gen. nov., sp. nov., a new cladoceran (Cladocera: nomopoda: Chydoridae) from an acid saline lake in southwest Western Australia. Journal of Natural History, 46, 2845–2864. https://doi.org/10.1080/00222933.2012.727215
Smirnov, N.N. (1971) Chydoridae of the world fauna. Fauna SSSR. Rakoobraznie. Vol. 1 (2). Nauka, Moscow, 531 pp.
Smirnov, N.N. (1976) Macrothricidae and Moinidae of the World fauna. Fauna SSSR, Novaya Seriya, Rakoobraznye, 1 (3), 1–237. [in Russian]
Smirnov, N.N. (1992) The Macrothricidae of the world. Guides to the identification of the microinvertebrates of the Continental Waters of the world. Vol. 1. SPB Academic Publishing, The Hague, 143 pp.
Smirnov, N.N. (1996) Cladocera: the Chydorinae and Sayciinae (Chydoridae) of the world. Guides to the identification of the microivertebrates of the Continental Waters of the world. 11. SPB Academic Publishing, Amsterdam, 197 pp.
Smirnov, N.N. & Timms, B. (1983) A revision of the Australian Cladocera. Records of the Australian Museum, Supplement 1, 1–132. https://doi.org/10.3853/j.0812-7387.1.1983.103
Sousa, F.D.R. & Elmoor-Loureiro, L.M.A. (2019) Identification key for the Brazilian genera and species of Aloninae (Crustacea, Branchiopoda, Anomopoda, Chydoridae). Papéis Avulsos De Zoologia, 59, e20195924-e20195924. https://doi.org/10.11606/1807-0205/2019.59.24
Sousa, F.D.R., Elmoor-Loureiro, L.M.A. & Santos, S. (2015) Redescription of Coronatella poppei (Richard, 1897) (Crustacea, Branchiopoda, Chydoridae) and a revision of the genus in Brazil, with descriptions of new taxa. Zootaxa, 3955 (2), 211–244. https://doi.org/10.11646/zootaxa.3955.2.3
Sousa, F.D.R., Elmoor-Loureiro, L.M.A., Mugnai, R., Panarelli, E.A. & Paggi, J.C. (2018) A revision of the genus Disparalona (Cladocera, Chydorinae) in South America. European Journal of Taxonomy, 460, 1–34. https://doi.org/10.5852/ejt.2018.460
Sousa, F.D.R., Elmoor-Loureiro, L.M. & Panarelli, E.A. (2017) The amazing diversity of the genus Monospilus Sars, 1862 (Crustacea: Branchiopoda: Aloninae) in South America. Zootaxa, 4242 (3), 467–492. https://doi.org/10.11646/zootaxa.4242.3.3
Van Damme, K. (2016) Not “Alona” monacantha Sars, 1901, but Coronatella hardingi (Brehm, 1957) (Crustacea: Branchiopoda: Cladocera) in the Afrotropics. Zootaxa, 4139 (2), 221–232. https://doi.org/10.11646/zootaxa.4139.2.6
Van Damme, K. & Dumont, H.J. (2008) Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera). Zootaxa, 1960 (1), 1–44. https://doi.org/10.11646/zootaxa.1960.1.1
Van Damme, K., Sinev, A.Y. & Dumont, H.J. (2011) Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines. Zootaxa, 2875 (1), 1–64. https://doi.org/10.11646/zootaxa.2875.1.1
Wu, J., Wang, W., Deng, D., Zhang, K., Peng, S., Xu, X. & Zhou, Z. (2019) Genetic diversity and phylogeography of Daphnia similoides sinensis located in the middle and lower reaches of the Yangtze River. Ecology and Evolution, 9 (8), 4362–4372. https://doi.org/10.1002/ece3.4880
Yamamoto, A., Makino, W. & Urabe, J. (2020) The taxonomic position of Asian Holopedium (Crustacea: Cladocera) confirmed by morphological and genetic analyses. Limnology, 21, 97–106. https://doi.org/10.1007/s10201-019-00585-z
Yoon, S.M. (2010) Arthropoda: Branchiopoda: Anostraca, Notostraca, Spinicaudata, Laevicaudata, Ctenopoda, Anomopoda, Haplopoda Branchiopods. Invertebrate fauna of Korea, 21 (2), 1–156.