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RESEARCH ARTICLE
Contents Vol 23(1)

Revision of the genus Bathybadistes (Isopoda: Asellota: Munnopsidae), with descriptions of two new species from the southern hemisphere

Kelly L. Merrin A B C F , Marina V. Malyutina D and Angelika Brandt E
+ Author Affiliations
- Author Affiliations

A Marine Biodiversity and Systematics, National Institute of Water and Atmospheric Research, Private Bag 14-901, Kilbirnie, Wellington, New Zealand.

B School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.

C Present address: 9 Haering Road, Boronia, Vic. 3155, Australia.

D A.V. Zhirmunsky’s Institute of Marine Biology, FEB RAS, 17 Palchevskogo Str., 690041, Vladivostok, Russia.

E University of Hamburg, Biocentrum Grindel and Zoological Museum, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany.

F Corresponding author. Email: kellymerrin@hotmail.com

Invertebrate Systematics 23(1) 61-76 https://doi.org/10.1071/IS05015
Submitted: 14 April 2005  Accepted: 11 December 2008   Published: 31 March 2009

Abstract

The munnopsid isopod genus Bathybadistes Hessler & Thistle has undergone several rearrangements since its initial inception. This genus was originally established for Bathybadistes hoplitis Hessler & Thistle and included eight species transferred from Ilyarachna Sars. Kussakin (2003) transferred four species to Echinozone Sars and one species back to Ilyarachna; he did not examine the other Bathybadistes species. The discovery of two new species of Bathybadistes has provided additional information on this genus. Using new and existing data, the present study used phylogenetic methods to test the validity and composition of Bathybadistes. Two outgroup and 15 ingroup taxa were analysed, including all nine species originally designated as Bathybadistes. The result of this analysis supports the validity of Bathybadistes. Echinozone appears to be paraphyletic because the four species moved to this genus by Kussakin (2003) do not align themselves with its type species, Echinozone coronata (Sars). Bathybadistes is rediagnosed and two new species, the first from the southern hemisphere, are described: Bathybadistes andrewsi, sp. nov. from ~3300-m depth off the west coast of New Zealand; and Bathybadistes fragilis, sp. nov. from ~4750-m depth in the eastern Weddell Sea, Antarctica.


Acknowledgements

We thank: NIWA and the Alfred Wegener Institute for Polar and Marine Science for logistics; Prof. Dieter Fütterer (expedition leader) and the crew of the RV Polarstern; Åse Wilhelmsen (Zoological Museum, University of Oslo) who kindly sent the type material of E. coronata, I. longicornis and I. hirticeps; Jørgen Olesen (Zoologisk Museum, University of Copenhagen) who kindly sent the type material of B. spinosissima; Neil Andrews (University of Canterbury) for his assistance in undertaking the SEM work; Jo Taylor (Museum Victoria) for provision of space to complete this manuscript; Niel Bruce (Museum of Tropical Queensland), Buz Wilson (Australian Museum) and the anonymous reviewers for their valuable comments. Funding came from a University of Canterbury Doctoral scholarship (KLM) and German Science Foundation grants Br 1121/20-1-3 and 436RUS 17/19/04 (AB). This is ANDEEP publication #46.


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