Abstract
The little-known cladoceran Alona macrocopa Sars, 1894 and four related species differ from the majority of the genus Alona by unusual morphology of antenna and postabdomen. Only two species of the five, A. macrocopa Sars, 1894 and A. imitatoria Smirnov, 1989, are found to be valid. The species A. abbreviata Sars, 1895, A. duodontha Henry, 1922 and A. guernei Smirnov, 2001 are proved to be the synonims of A. macrocopa. The detailed morphology of appendages of A. macrocopa and A. imitatoria is studied for the first time. Analysis of morphology of the macrocopa-group reveals numerous characters clearly separating it from other species of Alona despite the wide diversity of this genus. Unusual morphology of the antenna, and the female and male postabdomen does not allow placement of the macrocopa-group in any other genera of Aloninae. So the new genus Armatalona gen. n. is suggested. This new genus is the highly specialized marginal genus of Aloninae, closely related only to the Australian endemic genus Pseudomonospilus Smirnov, 2001. The morphology of Armatalona gen. n. and its place within Aloninae are discussed.
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References
Alonso, M., 1996. Fauna Iberica. Crustacea Branchiopoda. Consejo Superior de Investigaciones Cientificas, Madrid, 486 pp.
Brehm, V. & R. Thomsen, 1936. Brasilianische Phyllopoden und Arguliden gesammelt von Herrn Dr. O. Schubart. Zoolgischer Anzeinger, 116: 211–218.
Dumont, H. J. & M. Silva-Briano, 1998. A reclassification of the anomopod families Macrothricidae and Chydoridae, with the creation of a new suborder, the Radopoda (Crustacea: Branchiopoda). Hydrobiologia 384: 119–149.
Dumont, H. J. & M. Silva-Briano, 2000. Karualona n. gen. (Anomopoda, Chydoridae), with a description of two new species, and a key to all known species. Hydrobiologia, 435: 61–82.
Frey, D. G., 2008. Alona weinecki Studer on the subantarctic islands, not Alona rectangula Sars (Chydoridae, Cladocera). Limnology and Oceanography 33: 1386–1411.
Griggs, J. A., 2001. Taxonomic, biogeogarphic and genetic studies on Australian Chydorids. PhD Thesis. La Throbe University, Bondoora, Victoria. 317 pp.
Gurney, R., 1927. Some Australian freshwater Entomostraca reared from dried mud. Proceed. of General Meetings for Scientific Business of the Zoological Society of London 1: 59–79.
Henry, M., 1922. A monograph of the freshwater Entomostraca of New South Wales. Part I. Cladocera. Proceedings of the linnean Socieety of New South Wales 47: 26–52.
Korovchinsky, N.M., 1996. How many species of Cladocera are there? Hydrobiologia 321: 191–204.
Kotov, A. A., 1995. Razvitie golovnykh I torakalnykh pridatkov v pozdnem embriogeneze Eurucercus lamellatus (Daphniiphormes, Chydoridae). Zoologicheskii zhurnal 74: 39–50. [The development of cephalic and thoracal appendages of of Eurucercus lamellatus (Daphniiphormes, Chydoridae) in later embryogenesis. In Russian].
Kotov, A. A., 2000. Redescription and assigment of the chydorid Indialona ganpati Petkovsky, 1966 (Branchiopoda: Anomopoda: Aloninae), to Indialonini, new tribus. Hydrobiologia 439: 161–178.
Pesta, O., 1928. Eine Crustaeeenausbeuie aus Süd-Georgien (Antarktis). Annalen des Naturhistorischen Museums in Wien 42: 75–86.
Rajapaksa, R., & C.H. Fernando, 2005. Reallocation of Indialona macronyx (Daday, 1898) (Cladocera, Chydoridae) to the genus Alona. Canadian Journal of Zoology 63: 970–976.
Sars, G. O., 1894. Contributions to the knowledge of the fresh-water Entomostraca of New Zealand as shown by artificial hatching from dried mud. Videnskabs-selskabets Skrifter. I. Mathematiknaturvidenskab klasse 1894: 1–62.
Sars, G. O., 1895. On fresh-water Entomostraca from the neighbourhood of Sydney, partly raised from dried mud. Archiv for Mathematik og Naturvidenskab, 18: 1–81.
Sinev, A. Y., 1997. Review of the affinis-group of Alona Baird, 1843, with the description of a new species from Australia (Anomopoda Chydoridae). Arthropoda Selecta 6: 47–58.
Sinev, A. Y., 1999a. Alona werestschagini sp. n., new species of genus Alona Baird, 1843, related to A. guttata Sars, 1862 (Anomopoda, Chydoridae). Arthropoda Selecta 8: 23–30.
Sinev, A. Y., 1999b. Alona costata Sars, 1862 versus related palaeotropical species: the first example of close relations between species with a different number of main head pores among Chydoridae (Crustacea: Anomopoda). Arthropoda Selecta 8: 131–148.
Sinev, A. Y., 2000. Postembrional development of male and abnormal sexual individuals of Alona affinis (Leydig, 1860) (Anomopoda, Chydoridae). Hydrobiologia, 437: 197–202.
Sinev, A. Y., 2001. Distribution and polymorphism of Alona rectangula Sars, 1862 (Branchiopoda: Anomopoda: Chydoridae) in Russia and surrounding countries. Arthropoda Selecta 10: 83–86.
Sinev, A. Y., 2002. Place of a Central American bromeliad-inhabitingcladoceran Alona bromelicola Smirnov, 2008, withinthe genus (Chydoridae, Anomopoda, Branchiopoda). Arthropoda Selecta 11: 109–116.
Sinev, A. Y. & A. A. Kotov, 2000. Redescription of Alona labrosa Vasiljeva & Smirnov, 1969 (Chydoridae, Anomopoda, Branchiopoda). Hydrobiologia 439: 125–139.
Sinev, A. Y. & A. A. Kotov, 2001. Redescruiption of Alona setosocaudata Vasiljeva & Smirnov, 1969 (Chydoridae, Anomopoda, Branchiopoda). Hydrobiologia 452: 47–58.
Sinev, A. Y. & W. Hollwedel, 2002. Alona brandorffi sp. n. (Crustacea: Anomopoda: Chydoridae)-a new species from Brazil, related to A. verrucosa Sars, 1901. Hydrobiologia 472: 131–140.
Sinev, A. Y. & W. Holwedell, (in press). Translocation of Alona muelleri Richard, 1897 into the genus Karualona Dumont & Silva-Briano, 2000 (Branchiopoda: Anomopoda: Chydoridae). Hydrobiologia.
Sinev, A. Y., K. Van Damme & A. A. Kotov, (in press). Redescription of tropical cladoceras Alona diaphana King, 1853 and Alona davidi Richard, 1895 and their translocation to the genus Leberis Smirnov, 2009 (Branchiopoda: Anomopoda: Chydoridae). Hydrobiologia.
Smirnov, N. N., 1971. Chydoridae fauni mira. Fauna SSSR. Rakoobraznie 1: 1–531. [Chydoridae of the world fauna. In Russian].
Smirnov, N. N., 2009. [Tropicheskie Cladocera. 1. Novye vidy podov Alona i Biapertura (Aloninae, Chydoridae) iz tropichesoi Avstralii]. Zoologicheskii zhurnal 68 (7): 135–140. [Tropical Cladocera. 1. New species of genera Alona and Biapertura (Aloninae, Chydoridae) from tropical Australia. In Russian].
Smirnov N. N., 1994. A new interesting species of Aloninae from western Australia (Crustacea Cladocera Chydoridae). Arthropoda Selecta 3: 3–6.
Smirnov N. N., 1995. Check-list of the Australian Cladocera (Crustacea). Arthropoda Selecta 4: 3–6.
Smirnov, N. N. 2001. Recent changes and improvements in Aloninae taxonomy. Arthropoda Selecta, 10: 1–4.
Smirnov, N. N. & B. V. Timms, 2003. A revision of the Australian Cladocera (Crustacea). Records of the Australian Museum. Suppl. 1: 1-132
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Sinev, A.Y. Armatalona gen. n. – a new genus of subfamily Aloninae (Anomopoda, Chydoridae), separated from genus Alona Baird, 1840. Hydrobiologia 520, 29–47 (2004). https://doi.org/10.1023/B:HYDR.0000027723.38965.11
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DOI: https://doi.org/10.1023/B:HYDR.0000027723.38965.11