Abstract

A new genus and two new species of fresh water isopods from ground waters of the Kimberley region of West Australia are described. This new genus cannot be immediately assigned to an isopod suborder or family because its unique combination of characters encompass many plesiomorphies, as well as synapomorphies with the Flabellifera sensu lato. These features include free pleonites that are subequal except for an enlarged fifth pleonite, broad natatory pleopods, genital pores on medial extensions of the coxae, five pairs of oostegites, true coxal plates, an antennal protopod of three articles, and a rudimentary second flagellum on the antennula. One of the new species, well represented in one sample, is iteroparous and breeds continuously during the winter months. Because the type localities are from limestone fossil reefs not exposed to the marine environment since the Devonian period, these isopods may be remnants of an ancient freshwater stock. Name changes of some setal types are proposed.

 
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Bibliographic Data

Short Form
Wilson and Ponder, 1992, Rec. Aust. Mus. 44(3): 279–298
Author
George D. F. Wilson; Winston F. Ponder
Year
1992
Title
Extraordinary new subterranean isopods (Peracarida: Crustacea) from the Kimberley Region, Western Australia
Serial Title
Records of the Australian Museum
Volume
44
Issue
3
Start Page
279
End Page
298
DOI
10.3853/j.0067-1975.44.1992.36
Language
English
Date Published
05 December 1992
Cover Date
05 December 1992
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
CRUSTACEA: ISOPODA; TAXONOMY
Digitized
25 February 2009
Available Online
09 March 2009
Reference Number
36
EndNote
/Uploads/Journals/17774/36.enw
Title Page
/Uploads/Journals/17774/36.pdf
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Complete Work
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