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Marine Biodiversity

, Volume 49, Issue 2, pp 833–839 | Cite as

Errina argentina sp. nov., a new stylasterid (Hydrozoa: Stylasteridae) from Mar del Plata submarine canyon (Southwest Atlantic)

  • M. C. BernalEmail author
  • S. D. Cairns
  • P. E. Penchaszadeh
  • D. Lauretta
Original Paper

Abstract

Errina is a cosmopolitan genus of arborescent stylasterids that includes, discounting Errina cyclopora incertae sedis, 26 recent species and one extinct species. So far, only one species has been described from the Southwest Atlantic (SWA) off Argentina, Errina antarctica. Here, we describe a new species from that region, Errina argentina, collected in the Mar del Plata submarine canyon at 1398m depth. The new species is most similar to Errina kerguelensis in general growth form, arrangement of pores, and coenosteal texture, but differs in coenosteal strip width, gastrostyle and gastropore tube morphology, ampullae position, and the presence of numerous flush dactylopores. It differs from E. antarctica in coenosteum color, gastropore and dactylopore spine size, and shape of flush dactylopores. This record provides an extension of the present known distribution of the genus Errina in the SWA off Argentina.

Keywords

Argentina Biodiversity Deep sea Taxonomy 

Notes

Acknowledgements

Many thanks to the crew of the O/V Puerto Deseado for their assistance and to Bert Hoeksema and the reviewers of this paper for their suggestions.

Funding information

This work was supported by PICT 2013-2504 grants to Dr. Pablo Penchaszadeh, a PADI Foundation grant to Dr. Daniel Lauretta, and a PADI Foundation grant to Carolina Bernal.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All applicable international, national, and/or institutional guidelines for the care and use of animals were followed by the authors.

Sampling and field studies

All necessary permits for sampling and observational field studies have been obtained by the authors from the competent authorities.

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Copyright information

© Senckenberg Gesellschaft für Naturforschung and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”- CONICETBuenos AiresArgentina
  2. 2.Department of Invertebrate ZoologySmithsonian Institution - Department of Invertebrate Zoology NWWashington DCUSA

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