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Type: Article
Published: 2009-01-16
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Triaina, a new genus in the Janirellidae Menzies, 1956 (Crustacea: Isopoda: Asellota), with two new species from south-eastern Australia, and a new diagnosis for the family

Natural History Museum (Zoological Museum), University of Copenhagen, Universitetsparken 15, DK-2100, Copenhagen, Denmark. (Hon. Associate, Museum Victoria, Melbourne, Australia.)
Crustacea Isopoda Asellota Janirellidae new diagnosis Triaina gen. nov. T. isodonte sp. nov. T. makridonte sp. nov. Australia

Abstract

The varying concepts of Janirellidae Menzies, 1956 are outlined, including its rejection by several authors. The view of Wilson and Wägele of Janirellidae being a valid family comprising Janirella Bonnier, 1896 and presumably Dactylostylis Richardson, 1911 (= Spinianirella Menzies, 1962) is accepted. Diagnoses of the Janirellidae subsequent to Menzies’ original one were based on the inclusion of a diverse range of genera now recognised as not belonging in that family. A new diagnosis of Janirellidae is presented based on the inclusion of Janirella, Dactylostylis, and a new genus Triaina with two new species, T. isodonte and T. makridonte, from south-eastern Australia. The latter species represents the shallowest record (80 m) of the otherwise predominantly deep-water family. All species in the family are listed in an appendix, with area of type locality and depth range.

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