Journal of the Royal Society of New Zealand abstracts
Synonymy of the New Zealand corophiid amphipod genus, Chaetocorophium Karaman, 1979, with Paracorophium Stebbing, 1899: morphological and genetic evidence
M. Ann Chapman1
Ian D. Hogg1
Kareen E. Schnabel1*
Mark I. Stevens1
1Centre for Biodiversity and Ecology Research, Department of Biological Sciences, University of Waikato, Private Bag 3105, Hamilton, New Zealand.
*Present address: Department of Zoology, University of Guelph, Guelph, Ontario, Canada N1G 2W1.
Abstract The original diagnosis of the New Zealand endemic corophiid genus, Chaetocorophium, was based on a comparison of an apparently freshwater species, Paracorophium lucasi Hurley, 1954, with the type species of the estuarine genus Paracorophium, P. excavatum (Thomson, 1884), but as redescribed by Hurley. Hurley’s paper was inadvertently erroneous, being based on a mixture of two species by an earlier worker. A new description of P. excavatum has clarified the rather slight morphological differences between these endemic species, and genetic (allozyme) analyses confirm their separate identities. Given the error in erecting the genus Chaetocorophium, the genus should now correctly revert to Paracorophium. Comparisons of maxilliped, male gnathopod 2, and other morphological features also suggest that they both belong in the genus Paracorophium.
Keywords Amphipoda; Paracorophium; Chaetocorophium; systematics; New Zealand; Australia; molecular taxonomy
R99030 Received 23 December 1999; accepted 22 June 2001
© Journal of The Royal Society of New Zealand, Volume 32, Number 2, June 2002, pp 229–241
PDF file of entire paper: Print-quality (359K)
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