Abstract

Two new chydorid cladoceran genera, Planicirclus (n.gen.) with one species Planicirclus alticarinatus (n.sp.), and Plurispina (n.gen.) with two species, Plurispina chauliodus (n.sp.) and P. multituberculata (n.sp.), are described from south-western Australia. The status of the chydorid genus Pleuroxus in southern Australia and New Zealand is reviewed, with two new species described: Pleuroxus foveatus (n.sp.) from south-western Australia, and P. helvenacus (n.sp.) from New Zealand. The European species Pleuroxus aduncus (Jurine), previously identified from the region, is described, and shown definitely not to occur there. Pleuroxus hastirostris Sars and P. inermis Sars are redescribed, as is Archepleuroxus baylyi Smirnov & Timms. Four other species of Pleuroxus described from southern Australia are considered nomina dubia. All eight recognised taxa appear to be endemic to the region. Marked differences between the Pleuroxus fauna of eastern and western Australia provide evidence for adaptive radiation. It is likely that a comparable high degree of endemicity will be found in other chydorid groups.

 
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Bibliographic Data

Short Form
Frey, 1991, Rec. Aust. Mus. 43(3): 291–372
Author
David G. Frey
Year
1991
Title
The species of Pleuroxus and of three related genera (Anomopoda, Chydoridae) in southern Australia and New Zealand
Serial Title
Records of the Australian Museum
Volume
43
Issue
3
Start Page
291
End Page
372
DOI
10.3853/j.0067-1975.43.1991.49
Language
English
Date Published
12 December 1991
Cover Date
12 December 1991
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
CRUSTACEA: CLADOCERA; TAXONOMY
Digitized
02 December 2008
Available Online
27 February 2009
Reference Number
49
EndNote
/Uploads/Journals/17749/49.enw
Title Page
/Uploads/Journals/17749/49.pdf
File size: 84kB
Complete Work
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