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Issue: Vol. 844 No. 1: 1 Feb. 2005
Type: Articles
Published: 2005-02-01
DOI: 10.11646/zootaxa.844.1.1
Page range: 1–12
Abstract views: 50
PDF downloaded: 2

Taxonomy of Rhabderemia Topsent, 1890 collected from the south-eastern Brazilian continental shelf and slope by Programme REVIZEE (Rhabderemiidae, Poecilosclerida, Demospongiae), with the description of two new species

Museu Nacional, Departamento de Invertebrados, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, s/n, 20940-040, Rio de Janeiro, RJ, Brazil
Museu Nacional, Departamento de Invertebrados, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, s/n, 20940-040, Rio de Janeiro, RJ, Brazil
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EDUARDO HAJDU

Museu Nacional, Departamento de Invertebrados, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, s/n, 20940-040, Rio de Janeiro, RJ, Brazil
Porifera Taxonomy REVIZEE Brazilian coast Rhabderemia continental shelf continental slope

Abstract

Three new records (two new species) of Rhabderemia (Rhabderemiidae, Poecilosclerida, Demospongiae) are described from the South-eastern Brazilian coast, collected during Programme REVIZEE (1996–2002)-South Score, off the São Paulo and Santa Catarina State coasts. Rhabderemia uruguaiensis can be recognized by its rhabdostyles which are frequently smaller than 150µm as well as frequently larger than 300µm, and microscleres which are a single category of microstyles smaller than 100µm and small spirosigmata always smaller than 15µm. Rhabderemia besnardi sp. nov. is characterized by possession of two categories of spined microstyles, one category of rugose rhabdostyles and small spirosigmata. Rhabderemia itajai sp. nov. differs from other congeners, because of its rhabdostyles which are never smaller than 300µm, next to microstyles always smaller than 70µm and small spirosigmata always smaller than 10µm.

References

  1. Hajdu, E. (1994) A phylogenetic interpretation of hamacanthids (Demospongiae, Porifera), with the redescription of Hamacantha popana Journal of Zoology, 232 (1), 61–77.

    Hajdu, E., Santos, C.P., Lopes, D., Oliveira, M., Moreira, M.C.F., Carvalho, M. de S. & Klautau, M. (in press) Filo Porifera. In: Amaral, A.C.Z., Lana, P.C., Fernandes, F.C. & Coimbra, J.C. Biodiversidade bêntica da região sul-sudeste da costa brasileira. REVIZEE Score Sul – Bentos.

    Lopes, D.A. & Hajdu, E. (2004) Two new Mycalina from the south- eastern Brazilian shelf and slope collected by Programme REVIZEE (Poecilosclerida, Demospongiae). Journal of the Marine Biological Association of the United Kingdom, 84, 25–28.

    Soest, R.W.M. van & Hooper, J.N.A. (1993) Taxonomy, phylogeny and biogeography of the marine sponge genus Rhabderemia Topsent, 1890 (Demospongiae, Poeilosclerida). Scientia Marina, 57 (4), 319–351.