Home Introduction What is an ostracod? World species list Southern Ocean list About the authors Bibliography Acknowledgements Links Last updated 14 March 2008 Southern Ocean list > Austrinoecia isocheira > Notes Austrinoecia isocheira Drawings   Maps Download species PDF Austrinoecia isocheira (Müller, G.W., 1906) Records: 237 This species is endemic to the Southern Ocean, where it has been recorded as one of the most faithfully occurring species. It was initially described as a member of Müller’s "rotundata group", and so was placed by Poulsen (1973) in the genus Metaconchoecia. Recognising that the genus Metaconchoecia was a very heterogeneous assemblage of species Chavtur and Angel (in press) have recently revised the genus, raising the old concept to that of a tribe, and subdividing the species between ten genera. This species is placed in its own monospecific genus, although superficially it resembles Clausoecia pusilla. It is almost entirely restricted to mesopelagic depths in all sectors south of the Subantarctic Front.   n Mean mm s.d. Range mm Female 335 0.97 0.028 0.90-1.06 Male 169 0.81 0.020 0.76-0.86 A-1 33 0.76 0.041 0.70-0.84 A-2