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Giving up on elaborate dermal ossicles: a new genus of ossicleless Apodida (Holothuroidea)

Published online by Cambridge University Press:  30 June 2017

Camilla Souto ,
Luciana Martins  and
Carla Menegola
Camilla Souto*
Affiliation:
University of California Museum of Paleontology, Berkeley, 1101 Valley Life Sciences Building, Berkeley, CA 94720-4780, USA Museu de Zoologia, Universidade Federal da Bahia, Av. Barão de Jeremoabo s/n, Campus Universitário, Ondina, Salvador, BA 40170-290, Brazil
Luciana Martins
Affiliation:
Museu de Zoologia, Universidade Federal da Bahia, Av. Barão de Jeremoabo s/n, Campus Universitário, Ondina, Salvador, BA 40170-290, Brazil
Carla Menegola
Affiliation:
Museu de Zoologia, Universidade Federal da Bahia, Av. Barão de Jeremoabo s/n, Campus Universitário, Ondina, Salvador, BA 40170-290, Brazil
*
Correspondence should be addressed to: C. Souto, University of California Museum of Paleontology, Berkeley, 1101 Valley Life Sciences Building, Berkeley, CA 94720-4780, USA email: csouto@berkeley.edu
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Abstract

In this paper we describe a new genus and a new species of Chiridotidae based on specimens collected in shallow water off the South-eastern Brazilian coast. Gymnopipina ikamiaba gen. nov. et sp. nov. is characterized by the complete absence of dermal ossicles in the body, and it differs from the other ossicleless apodids in the number of tentacles and of Polian vesicles, and in the morphology of the calcareous ring. Although not formally tested with a phylogenetic framework, apodids have apparently lost their dermal ossicles multiple times. If these reversions hold true, Gymnopipina gen. nov. represents the fourth independent loss of dermal ossicles in the class Holothuroidea. An identification key to the Brazilian apodid species is also provided.

Keywords

ChiridotinaeBraziltaxonomynew speciesshallow waterbiodiversity
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 98 , Issue 7 , November 2018 , pp. 1685 - 1688
Copyright
Copyright © Marine Biological Association of the United Kingdom 2017 

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Footnotes

3

Present address: Museu de Zoologia, Universidade de São Paulo, Caixa Postal 42494, São Paulo, SP 04218-970, Brazil

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