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Algal-dwelling Eophliantidae (Amphipoda): description of a new species and key to the world species, with notes on their biogeography

Published online by Cambridge University Press:  09 December 2009

A.N. Lörz ,
N.M. Kilgallen  and
M. Thiel
A.N. Lörz*
Affiliation:
National Institute of Water and Atmospheric Research, Greta Point, Wellington, New Zealand
N.M. Kilgallen
Affiliation:
National Institute of Water and Atmospheric Research, Greta Point, Wellington, New Zealand
M. Thiel
Affiliation:
Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile Centro de Estudios Avancados en Zonos Aridas (CEAZA), Coquimbo, Chile
*
Correspondence should be addressed to: A.N. Lörz, National Institute of Water and Atmospheric Research, Greta Point, Wellington, New Zealand email: a.loerz@niwa.co.nz
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Abstract

Eophliantidae are poorly studied marine algal-dwelling amphipods with a wide distribution. A new species was found to excavate burrows across the main stem of Carpophyllum maschalocarpum (Turner) Grev. in the New Zealand subtidal, and a detailed morphological description of this amphipod is given. Bircenna macayai sp. nov. can be distinguished from other Bircenna species by a combination of the following characters: bilobed coxa 1, merus and carpus of pereopods 5–7 strongly extended posteriorly, crenulate basis of pereopod 7 and smooth posterior margin of epimeron 3, pereopod 7 basis longer than wide. A key to the fourteen world species of Eophliantidae is provided. Taxonomy, evolutionary sequences, functional morphology and biogeography of the Eophliantidae are briefly discussed. New Zealand and Australian shallow waters show the highest species diversity of Eophliantidae, containing both species bearing plesiomorphic and highly derived characters, suggesting that Australasia is an evolutionary centre for this amphipod family.

Keywords

AmphipodaEophliantidaeBircenna macayainew speciesCarpophyllum maschalocarpumfunctional morphologyalgal-dwellingbiogeographyNew ZealandAustralasiaevolutionary centre
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 90 , Issue 5 , August 2010 , pp. 1055 - 1063
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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