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Type: Article
Published: 2019-03-04
Page range: 531–546
Abstract views: 74
PDF downloaded: 1

Two new species of Psolus Oken from Brazil (Holothuroidea: Psolidae), with neotype designation and redescription of Psolus vitoriae Tommasi, 1971, and a key to the southwestern Atlantic and Magellanic species

Museu de Zoologia, Universidade de São Paulo, São Paulo-SP, 04263-000, Brazil. ORCID: 0000-0002-8107-3265.
Museu de Zoologia, Universidade de São Paulo, São Paulo-SP, 04263-000, Brazil.
Echinodermata Dendrochirotida Calcareous ring Biodiversity REVIZEE Campos Basin


The taxonomy of the southeastern Brazilian species of Psolus is reviewed and two new species described. Additionally, P. vitoriae is redescribed based on a newly designated neotype and supplemental material from the type locality and nearby regions. The synonymy of P. marcusi with P. patagonicus is called into question. The calcareous ring is useful for distinguishing between some Psolus species. Psolus tommasi sp. nov. is characterized by having five oral valves, an anus covered by a variable number of small, irregular anal valves, oral and anal valves distinct from body wall scales, calcareous ring interradial plates entire, calcareous ring simple, without posterior processes; radial and interradial plates entire, dorsal ossicles spheroid bodies and sole ossicles knobbed and smooth perforated plates. Psolus thandari sp. nov. is characterized by granules on body scales; mouth surrounded by five to seven triangular valves of equal size; anus surrounded by a variable number of small and irregular anal valves that grade into surrounding scales; calcareous ring with interradial plates entire. Six species of Psolus are known from the southwestern Atlantic and Magellanic region: P. vitoriae (São Paulo, Brazil); P. patagonicus (Mar del Plata to Tierra del Fuego, Argentina; Strait of Magellan and Cape Horn); P. segregatus (Patagonia, Argentina; Strait of Magellan, Chile; Hikurangi Margin and Chatham Rise, New Zealand); P. antarcticus (Magellanic region; South Georgia Island, southern Atlantic Ocean; Macquarie Island and Ridge, New Zealand); P. lawrencei (Mar del Plata, Argentina) and Psolus murrayi Théel, 1886 (Montevideo, Uruguay). A key to the species of Psolus from the southwestern Atlantic and Magellanic region, and a synoptic table to all southern Atlantic Psolus species is provided.



  1. Amaral, A.C.Z. & Rossi-Wongtschowski, C.L.D.B. (2004) Biodiversidade Bentônica das Regiões Sudeste e Sul do Brasil—Plataforma Externa e Talude Superior. Série Documentos Revizee: Score-Sul. Instituto Oceanográfico—USP, São Paulo, 216 pp.

    Burmeister, H.C.C. (1837) Handbuch der Naturgeschichte. Zum Gebrauch bei Vorlesungen. Enslin, Berlin, 858 pp.

    Carriol, R.P. & Féral, J.P. (1985) Réexamen de quelques Psolidae (Holothurioidea, Echinodermata) antarctiques et subantartiques. Description de deux nouvelles espèces du genre Psolus. Bulletin du Museum National d'Histoire Naturelle Section A Zoologie Biologie et Ecologie Animales, 7, 49–60.

    Cherbonnier, G. (1974) Invertébrés marins des XII et XV Expéditions Antarctiques Françaises en Terre Adélie. Holothurides. Tethys, 5, 601–610.

    Davey, N. & Whitfield, E. (2013) The Psolidae of New Zealand and some additions to the Macquarie ridge fauna (Echinodermata: Holothuroidea: Psolidae). Memoirs of Museum Victoria, 70, 51–67.

    Deichmann, E. (1948) The Holothurian fauna of South Africa. Annals of the Natal Museum, 11, 325–376.

    Ekman, S. (1925) Holothurien. Further zoological results of the Swedish Antarctic Expedition 19011903, 1 (6), 1–194.

    Grube, A.E. (1840) Actinien, Echinodermen und Würmer des Adriatischen und Mittlemeers. J.H. Bon, Königsberg, 11 pp., 1 pl. [pp. 33–43]

    Hérouard, E. (1901) Note préliminaire sur les holothuries rapportées par l’Expédition Antarctique Belge. Archives de Zoologie Expérimentale et Générale, 3 (9), 39–48.

    Herouard, E. (1906) Holothuries. Expedition antarctique belge. Résultats du Voyage du S. Y. Belgica, 1906, Zoologie, 1–16.

    Hendler, G., Miller, J.E., Pawson, D.L. & Kier, P.M. (1995) Sea stars, sea urchins and allies: echinoderms of Florida and the Caribbean. Smithsonian Institution Press, Washington, 390 pp.

    Hernández, D.A. (1981) Holothuroidea de Puerto Deseado (Santa Cruz, Argentina). Revista del Museo Argentino de Ciencias Naturales Bernardino Rivadavia, 4, 151–168.

    Ludwig, H. & Heding, S.G. (1935) Die holothurien der Deutschen Tiefsee-Expedition. 1. Fusslose und dendrochirote Formen. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem dampfer Valdivia 1898 1899, 24 (2), 123–214.

    Mackenzie, M. & Whitfield, E. (2011) An overview of the Australian Psolid sea cucumbers (Echinodermata: Holothuroidea: Psolidae) with the description of 5 new species. Zootaxa, 3037, 21–36.

    Martinez, M.I. (2013) Diversidad de Dendrochirotida en el Mar Argentino (Echinodermata: Holothuroidea); aspectos taxonómicos, filogenéticos, ecológicos y biogeográficos. Unplblished phD Thesis, Universidad de Buenos Aires, Buenos Aires, 150 pp.

    Martinez, M.I, Thandar, A.S. & Penchaszadeh, P.E. (2013) A new species of Havelockia Pearson, 1903 from the Argentine Sea (Holothuroidea: Dendrochirotida: Sclerodactylidae). Zootaxa, 3609 (6), 583–588.

    Martinez, M.I. (2016) The sea cucumber Psolus patagonicus (Echinodermata: Holothuroidea) from the southwestern Atlantic: Redescription of the holotype and a new synonym. Revista del Museo Argentino de Ciencias Naturales, 18, 237–241.

    Martinez, M.I. & Penchaszadeh, E.P. (2017) A new species of brooding Psolidae (Echinodermata: Holothuroidea) from deep-sea off Argentina, Southwestern Atlantic Ocean. Deep-Sea Research, 146, 13–17.

    Martins, L. & Souto, C. (2015) Taxonomic review of four western Atlantic dendrochirotids (Holothuroidea) with the description of a new Brazilian cucumariid species and designation of neotypes. Zootaxa, 3919 (2), 362–374.

    Martins, L. & Tavares, M. (2018a) Ypsilothuria bitentaculata bitentaculata (Echinodermata: Holothuroidea) from the southwestern Atlantic, with comments on its morphology. Zoologia, 35, 1–6.


    Martins, L. & Tavares, M. (2018b) New species of the genera Havelockia and Thyone (Echinodermata: Holothuroidea) and first record of T. crassidisca from the southwestern Atlantic Ocean. Zootaxa, 4407 (4), 533–542.

    Moura, R.B. (2016) Taxonomia e distribuição de holoturias (Echinodermata, Holothuroidea) do mar profundo Brasileiro. Unpublished PhD Thesis, Universidade Federal de Pernambuco, Recife, 220 pp.

    Oken, L. (1815) Lehrbuch Der Naturgeschichte. Dritter Theil, Zoologie. Erste Abteilung, Fleischlose Thiere. A. Schmid, Jena, 841 pp.

    O’Loughlin, P.M. & Whitfield, E. (2010) New species of Psolus Oken from Antarctica (Echinodermata: Holothuroidea: Psolidae). Zootaxa, 2528, 61–68.

    Paulay, G. & O’Loughlin, P.M (2015) ICZN Opinion 2367 (Case 3598) (2015) Thyone Oken, 1815 and Psolus Oken, 1815 (Echinodermata, Holothuroidea): names reinstated as available, Bulletin of Zoological Nomenclature, 72 (3), 237–238.

    Pawson, D.L. (1964) The Holothuroidea collected by the Royal Society Expedition to Southern Chile, 1958-1959. Pacific Science, 18, 453–470.

    Perrier, R. (1905) Holothuries antarctiques du Muséum d’Histoire naturelle de Paris. Annales de Sciences Naturelles, Zoologie, 9, 104–146.

    Philippi, R.A. (1857) Vier neue Echinodermen des Chilensischen Meeres. Archiv für Naturgeschichte, 23, 130–134.

    Samyn, Y., VandenSpiegel., D. & Massin C. (2006) Taxonomie des holothuries des Comores. ABC Taxa, 1, 1–130.

    Spalding, M.D., Fox, H.E., Allen, G.R., Davidson, N., Ferdana, Z.A., Finlayson, M., Halpern, B.S., Jorge, M.A., Lombana, A.L., Lourie, S.A., Martins, K.D., McManus, E., Molnar, J., Recchia, C.A. & Robertson, L. (2007) Marine Ecoregions of the World: A Bioregionalization of Coastal and Shelf Areas. Bioscience, 57, 573–583.

    Strussenfelt, A.M. (1765) Beskrifning paper Sjö-krak, Haf-Spöke kaladt. Kon svenska Vetensk Akad. Handl, 26, 256–266.

    Thandar, A.S. (2009) New species and a new record of sea cucumbers from deep waters of the South African temperate region. Zootaxa, 2009, 30–42.

    Théel, H. (1886) Report on the Holothurioidea dredged by H.M.S. 'Challenger' during the years 1873–76. Challenger Zoological Report, 39, 1–299.

    Thomson, C.W. (1876) Notice of some Peculiarities in the Mode of Propagation of certain Echinoderms of the Southern Sea. Journal of the Linnean Society of London, Zoology, 13, 55–79.

    Tommasi, L.R. (1971) Equinodermes do Brasil I. Sobre algumas espécies novas e outras pouco conhecidas, para o Brasil. Boletim do Instituto Oceanográfico, 20, 1–22.

    Tommasi, L.R. (1985) Equinodermes da região da Ilha da Vitória (SP). Boletim do Instituto Oceanográfico, 13, 1–4.

    Tommasi, L.R. (1994) Bentos. Relatório do Projeto Monitoramento Ambiental Oceânico da Bacia de Campos FUNDESPA/GEOMAP-PETROBRÁS 1993. Report on the Oceanic Monitoring Program of the Campos Basin FUNDESPA/GEOMAP-PETROBRÁS, 82 pp.

    Vaney, C. (1906) Holothuries Expédition Antarctique Française (1903–1905). Sciences Naturelles: Documents Scientifiques. Masson et Cie, Éditeurs, Paris, 30 pp., 2 pls.