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A new species of Stoeba (Demospongiae: Astrophorida) from oceanic islands off north-eastern Brazil

Published online by Cambridge University Press:  03 December 2007

Fernando Moraes  and
Guilherme Muricy
Fernando Moraes
Affiliation:
Laboratorio de Porifera, Departamento de Invertebrados, Museu Nacional–UFRJ, Quinta da Boa Vista, s/n, São Cristóvão, CEP 20940–040 Rio de Janeiro, RJ, Brazil
Guilherme Muricy
Affiliation:
Laboratorio de Porifera, Departamento de Invertebrados, Museu Nacional–UFRJ, Quinta da Boa Vista, s/n, São Cristóvão, CEP 20940–040 Rio de Janeiro, RJ, Brazil
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Abstract

The genus Stoeba has 11 recognized species. Herein we describe a new species of Stoeba endemic from two oceanic archipelagoes off north-eastern Brazil (Fernando de Noronha and São Pedro e São Paulo), constituting the first record of this genus for the western Atlantic. Stoeba latex sp. nov. is characterized by its thickly encrusting to massive shape, stretched surface, brownish-red colour, and spiculation of calthrops and sanidasters with well developed spines; dichotriaenes and oxeas are absent. Stoeba and Dercitus are very closely related genera, and should probably be merged. The genus Stoeba now contains the following valid species: S. dissimilis, S. exostotica, S. extensa, S. lesinensis, S. natalensis, S. occulta, S. pauper, S. plicata, S. reptans, S. simplex, S. syrmatita and S. latex sp. nov. Several other species still await description. A key to the valid species of Stoeba is given.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 87 , Issue 6 , December 2007 , pp. 1387 - 1393
Copyright
2007 Marine Biological Association of the United Kingdom

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