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Lacydoniidae Bergström, 1914 (Polychaeta) in the South Atlantic: morphology, three new species and five new records

Published online by Cambridge University Press:  15 September 2015

Alexandra E. Rizzo ,
Wagner F. Magalhães  and
Cinthya S.G. Santos
Alexandra E. Rizzo*
Affiliation:
Zoology Department, Rio de Janeiro State University (UERJ), IBRAG, Rua São Francisco Xavier, 524, PHLC, sala 516, Maracanã, 20550-900, Rio de Janeiro, RJ, Brazil
Wagner F. Magalhães
Affiliation:
Department of Biology, University of Hawaii at Manoa, 2538 McCarthy Mall, Honolulu, Hawaii 96822, USA
Cinthya S.G. Santos
Affiliation:
Marine Biology Department, Fluminense Federal University (UFF), Rua Outeiro de São João Batista, s/n, CEP: 24020-141, Niterói, Rio de Janeiro, Brazil
*
Correspondence should be addressed to:A.E. Rizzo, Zoology Department, Rio de Janeiro State University (UERJ), IBRAG, Rua São Francisco Xavier, 524, PHLC, sala 516, Maracanã, 20550-900, Rio de Janeiro, RJ, Brazil email: aerizzo@hotmail.com
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Abstract

Lacydonia Marion & Bobretzky in Marion, 1874 is the only known genus in Lacydoniidae Bergström, 1914, which is composed of small polychaetes scarcely sampled. Studies on the biology and ecology of this group are rare and most species descriptions are based on one or a few specimens. There are 13 nominal species from different parts of the world. We revise herein the morphological characters used for species description on the basis of a lacydoniid assemblage collected in Campos Basin, Southern Brazil. Material was obtained in two sampling campaigns during the Project Habitats/Petrobras – Heterogeneidade Ambiental da Bacia de Campos, coordinated by CENPES/Petrobras. Lacydoniids were collected from the continental shelf, canyons and slope, at depths from 25 to 2500 m. This polychaete family is recorded for the first time in Brazilian waters, three new species are described and all others are new records to the South Atlantic. The new species are Lacydonia anapaulae sp. nov., L. brasiliensis sp. nov. and L. jacki sp. nov. Newly recorded species are L. cirrata (Hartman & Fauchald, 1971), L. laureci Laubier, 1975, L. miranda Marion & Bobretzky in Marion, 1874, L. oculata (Hartman, 1967) and L. cf. papillata Uschakov, 1958. An updated key to all described species of Lacydonia is included.

Keywords

TaxonomyPhyllodocidaLacydonianew speciesHabitats/PetrobrasCampos BasinSouthern Brazil
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 96 , Issue 6 , September 2016 , pp. 1265 - 1285
Copyright
Copyright © Marine Biological Association of the United Kingdom 2015 

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