Family CYZICIDAE Stebbing, 1910

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Introduction

Members of this family are easily recognised by many distinctive feactures, including valves thick and swollen, more or les oval and with many growth rings and a well developed umbo (details in Richter & Timms 2005). However, designation to genus us difficult as there is no agreement on generic characters.

Depending on author, there is either (a) one extant genus (Cyzicus with Estheria as a synonym), the original position (e.g. Dakin 1914; Henry 1924) and recently promoted by Naganawa (2001), or (b) two genera (Cyzicus and Eocyzicus), supported by Brtek (1997) and Naganawa & Orgiljanova (2000), or (c) three genera (Cyzicus, Eocyzicus and Caenestheria) proposed by Straškraba (1965) and supported by Sassaman (1995), or four genera (three aforementioned plus Caenestheriella), first advocated by Daday (1914) and accepted with reservations by many modern authors (e.g. Pennak 1989; Martin 1992; Maeda-Martínez et al. 1997; Richter & Timms 2005). In Australia until 2005, all authors followed Henry (1924) and used the generic name Cyzicus for all species. However according to Richter & Timms (2005) this genus does not occur in Australia, but the other three of Daday's genera (Caenestheria, Caenestehriella and Eocyzicus) do. This position is followed here.

 

General References

Brtek, J. 1997. Checklist of the valid and invalid names of the “Large Branchiopods” (Anostraca, Notostraca, Spinicaudata and Laevicaudata), with a survey of the taxonomy of all Branchiopoda. Zborník Slovenského Národného Múzea. Prírodné Vedy 43: 3-66

Daday, E. 1914. Monographie systématique des Phyllopodes Conchostracés. Première partie. Annales des Sciences Naturelles, Zoologie 20: 39-330

Dakin, W.J. 1914. Fauna of Western Australia. II. The Phyllopoda of Western Australia. Proceedings of the Zoological Society of London. Proceedings of the Zoological Society of London 1914: 293-305

Henry, M. 1924. A monograph of the freshwater Entomostraca of New South Wales. Part IV. Phyllopoda. Proceedings of the Linnean Society of New South Wales 1924: 120-137

Maeda-Martínez, A.M., Belk, D., Obregón-Barboza, H.& Dumont, H. 1997. Large branchiopod assemblages common to Mexico and the United States. Hydrobiologia 359: 45-52

Martin, J.W 1992. Branchiopoda. pp. 25-224 in Harrison F.R. (ed.). Microscopic Anatomy of Invertebrates. Crustacea. New York : Wiley-Liss Vol. 9.

Naganawa, H. 2001. Current prospect of the large branchiopod fauna of East Asia. 3. Revised classification of the recent Spinicaudata. Aquabiology 23(3): 291-299

Naganawa, H & Orgiljanova, T.I. 2000. Current prospect of the large branchiopod fauna of East Asia. I. Order Spinicaudata. Aquabiology 22(3): 272-278

Pennak, R.W. 1989. Fresh-water Invertebrates of the United States — Protozoa to Mollusca. New York : John Wiley & Sons.

Richter, S. & Timms, B.V. 2005. A list of recent clam shrimps (Crustacea: Laevicaudata, Spinicaudata, Cyclestherida) of Australia, including a description of a new species of Eocyzicus. Records of the Australian Museum 57: 341-354

Sassaman, C. 1995. Sex determination and evolution of unisexuality in the Conchostraca. Hydrobiologia 298: 45-65

Straškraba, M. 1965. Taxonomical studies on Czechoslovak Conchostraca. II. Families Lynceidae and Cyzicidae. Vestník Ceskoslovenské Zoologické Spolecnosti 29: 205-214

 

History of changes

Published	As part of group	Action Date	Action Type	Compiler(s)
03-Sep-2018	SPINICAUDATA Linder, 1945	28-Aug-2018	MODIFIED
09-Aug-2012		09-Aug-2012	MODIFIED
18-Aug-2010		18-Aug-2010	MODIFIED
		12-Feb-2010	(import)