Redescription of the endemic Australian cladoceran Alona willisi (Smirnov, 1989) and its assignment to Acanthalona gen. nov. (Cladocera: Anomopoda: Chydoridae)

ARTEM Y. SINEV; TSUYOSHI KOBAYASHI

doi:10.11646/zootaxa.3390.1.4

Issue: Vol. 3390 No. 1: 17 Jul. 2012

Type: Articles

Published: 2012-07-17

DOI: 10.11646/zootaxa.3390.1.4

Page range: 43–55

Abstract views: 27

PDF downloaded: 1

**Redescription of the endemic Australian cladoceran Alona willisi (Smirnov, 1989) and its assignment to Acanthalona gen. nov. (Cladocera: Anomopoda: Chydoridae)**

ARTEM Y. SINEV⁺⁻
TSUYOSHI KOBAYASHI⁺⁻

Department of Invertebrate Zoology, Biological Faculty, M.V. Lomonosov Moscow State University, Leninskie Gory, Moscow 119992, Russia

Scientific Services Division, Office of Environment and Heritage NSW, Department of Premier and Cabinet, P.O.Box A290 Sydney South NSW 1232, Australia

Crustacea apomorphies Acanthalona gen. nov. Armatalona Australian endemism Cladocera Matralona Royal National Park sister groups synapomorphies

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Abstract

Alona willisi (Smirnov, 1989) (Anomopoda: Chydoridae) is a poorly known cladoceran endemic to Australia. The presentmorphological study revealed numerous unique and rare features of the species and justifies its assignment to Acanthalona gen.nov. The new genus differs by its postabdomen armed with very long, thick marginal denticles and by exopodite of limb Vwith only three setae. It also differs from most Aloninae by antennal formula (setae 0-0-3/0-1-2, spines 1-0-1/0-0-1), sharedonly with Bryospilus Frey, 1980. In our opinion, Acanthalona gen. nov. is related to Armatalona Sinev, 2004 and MatralonaVan Damme & Dumont, 2009. These three genera form a clade, basal for the subfamily, and not directly related to the majorityof Aloninae. The records of A. willisi show that the species inhabits both acidic and alkaline freshwaters and seems to be algivorous as well as detritivorous.

References

Alonso, M. (1996) Crustacea, Branchiopoda. In: Fauna Iberica, vol. 7. Ramos, M., A. et al (Eds.) Museo Nacional de Ciencias Naturales. CSIC. Madrid, 486 pp.
Cale, D.J., Halse, S.A. & Walker, C.D. (2004) Wetland monitoring in the Wheatbelt of south-west Western Australia: site descriptions, waterbird, aquatic invertebrate and groundwater data. Conservation Science Western Australia, 5, 20–135.
Dumont, H.J. & Silva-Briano, M. (2000) Karualona n.gen. (Anomopoda: Chydoridae), with a description of two new species, and a key to all known species. Hydrobiologia, 435, 61–82.
Eaton, A.D., Clesceri, L.S., Rice, E.W. & Greenberg, A.E. (Eds) (2005) Standard methods for examination of water & wastewater. Centennial edition, 21^st edn. (American Public Health Association: Washington, D.C., USA).
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, 254, 221–385.
Hosomi, M. & Sudo, R. (1986) Simultaneous determination of total nitrogen and total phosphorus in freshwater samples using persulfate digestion. International Journal of Environmental Studies, 27, 267–275.
Kobayashi, T., Bayly, I.A.E., Hunter, S.J., Jacobs, S.J. & Treanor, M.B. (in press) First record of Hemiboeckella serali Sars, 1912 (Calanoida: Centropagidae) in New South Wales. Proceedings of the Linnean Society of New South Wales, 134.
Kotov, A.A. (2000b) Redescription and assignment of the chydorid Indialona ganpati Petkovsky, 1966 (Branchiopoda: Anomopoda: Aloninae), to Indialonini, new tribus. Hydrobiologia, 439, 61–178.
Kotov, A.A. (2006) Adaptations of of Anomopoda crustaceans (Crustacea, Cladocera) to the benthic mode of life. Zoologichesky zhurnal, 85, 1043–1059.
Kotov, A.A. & Sinev, A.Y. (2011) Cladocera (Crustacea, Branchiopoda) from the Zeya river basin from the Zeya river basin. 2. Description of new taxa. Zoologychesky zhurnal, 90, 3, 272–284.
Kotov, A.A., Sinev, A.Y. & Berrios, V.L. (2010) The Cladocera (Crustacea: Branchiopoda) of six high altitude water bodies in the North Chilean Andes, with discussion of Andean endemism. Zootaxa, 2430, 1–66.
Sinev, A.Y. (1999) Alona costata Sars, 1862 versus related paleotropical 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. (2001) Separation of Alona cambouei Guerne & Richard, 1893 from Alona pulchella King, 1853 (Branchiopoda, Anomopoda, Chydoridae). Arthropoda Selecta, 10, 5–18.
Sinev, A.Y. (2002b) Redescription of Australian cladocera Alona archeri Sars, 1888 (Branchiopoda: Anomopoda: Chydoridae). Arthropoda Selecta, 11, 247–254.
Sinev, A.Y. (2004) Armatalona gen. n. – a new genus of subfamily Aloninae (Anomopoda, Chydoridae), separated from genus Alona Baird, 1840. Hydrobiologia, 420, 29–47.
Sinev, A.Y. & Kotov, A.A. (2012) New and rare Aloninae (Cladocera: Anomopoda: Chydoridae) from Indochina. Zootaxa 3334, 1–28.
Sinev, A.Y. & Shiel, R.J. (2008) Redescription of Alona macracantha Smirnov and Timms, 1983 and its assignment to Maraura gen. nov. (Cladocera: Anomopoda: Chydoridae). Journal of Natural History, 42, 45–46, 2809–2824.
Sinev, A.Y., Nachai, S. & Sanoamuang, L. (2007) Occurrence of the Australian cladoceran Armatalona macrocopa (Sars, 1894) (Cladocera: Anomopoda: Chydoridae) in Thailand. Invertebrate Zoology, 4, 25–29.
Sinev, A.Y., Van Damme, K. & Kotov, A.A. (2005b) Redescription of tropical-temperate cladocerans Alona diaphana King, 1853 and Alona davidi Richard, 1895 and their translocation to Leberis Smirnov, 1989 (Branchiopoda: Anomopoda: Chydoridae). Arthropoda Selecta, 14, 183–205.
Smirnov, N.N. (1971) Chydoridae of the world fauna. Fauna SSSR. Rakoobraznie, 1(2), 1–531. (In Russian)
Smirnov, N.N. (1989) Tropical Cladocera. 2. New species of families Chydoridae, Macrothricidae and Moinidae from tropical Australia. Zoologicheskiy Zhurnal, 68, 51–58 (in Russian).
Smirnov, N.N. & Timms, B.V. (1983) A revision of the Australian Cladocera (Crustacea). Records of the Australian Museum, Supplement, 1, 1–132.
Timms, B.V. (1986) Reconnaissance limnology of some coastal dune lakes of Cape York Peninsula, Queensland. Australian Journal of Marine and Freshwater Research, 37, 167–176.
Van Damme, K., Brancelj, A., & Dumont, H.J. (2009) Adaptations to the hyporheic in Aloninae (Crustacea: Cladocera): allocation of Alona protzi Hartwig, 1900 and related species to Phreatalona gen. nov. Hydrobiologia, 618, 1–34.
Van Damme, K. & Dumont, H.J. (2008a) Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera). Zootaxa, 1960, 1–44.
Van Damme, K. & Dumont, H. J. (2008b). The ‘true’ genus Alona Baird, 1843 (Crustacea: Cladocera: Anomopoda): characters of the A. quadrangularis-group and description of a new species from Democratic Republic Congo. Zootaxa, 1943, 1–25.
Van Damme, K. & Dumont, H. J. (2009) Notes on chydorid endemism in continental Africa: Matralona gen. n., a monotypic Alonine from the Fouta Djalon Plateau (Guinea, West Africa) (Crustacea: Cladocera: Anomopoda) Zootaxa, 2051, 26–40.
Van Damme, K., Kotov, A.A. & Dumont, H.J. (2010) A checklist of names in Alona Baird 1843 (Crustacea: Cladocera: Chydoridae) and their current status: an analysis of the taxonomy of a lump genus. Zootaxa, 2330, 1–63.
Van Damme, K. & Sinev, A.Y. (2011) A new genus of cave-dwelling microcrustaceans from the Dinaric Region (south-east Europe): adaptations of true stygobitic Cladocera (Crustacea: Branchiopoda). Zoological Journal of the Linnean Society, 161, 31–52.
Van Damme, K., Sinev, A.Y. & Dumont, H.G. (2011) Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines. Zootaxa, 2875, 1–64.