
Simple and colonial ascidians were collected at different depths at Arraial do Cabo, Rio de Janeiro, between 2000 and 2003. The collection here presented includes representatives of the families Clavelinidae (Clavelina oblonga), Polycitoridae (Cystodytes dellechiajei), Polyclinidae (Polyclinum constellatum and Polyclinum molle sp. nov.), Holozoidae (Distaplia bermudensis), Ascidiidae (Ascidia sydneiensis and Phallusia nigra), Styelidae (Botrylloides giganteum, Botrylloides nigrum, Symplegma brakenhielmi, Symplegma rubra, Polyandrocarpa anguinea, Eusynstyela floridana, Eusynstyela tincta and Styela plicata), Pyuridae (Herdmania pallida and Microcosmus exasperatus). Didemnids were also collected in the area but were not considered here. Of the 17 species found, one (Polyclinum molle sp. nov.) is a new species in the family Polyclinidae and the others are all species with tropical distribution.Ascídias simples e coloniais foram coletadas em diferentes profundidades em Arraial do Cabo, Rio de Janeiro, entre 2000 e 2003. A coleção aqui apresentada inclui representantes das famílias Clavelinidae (Clavelina oblonga), Polycitoridae (Cystodytes dellechiajei), Polyclinidae (Polyclinum constellatum e Polyclinum molle sp. nov.), Holozoidae (Distaplia bermudensis), Ascidiidae (Ascidia sydneiensis e Phallusia nigra), Styelidae (Botrylloides giganteum, Botrylloides nigrum, Symplegma brakenhielmi, Symplegma rubra, Polyandrocarpa anguinea, Eusynstyela floridana, Eusynstyela tincta e Styela plicata), Pyuridae (Herdmania pallida e Microcosmus exasperatus). Espécimes de Didemnidae também foram coletados na região, mas não serão reportados neste trabalho. Entre as 17 espécies encontradas, uma (Polyclinum molle sp. nov.) é uma nova espécie da família Polyclinidae e todas as outras apresentam distribuição tropical.
taxonomy, Ascidians, QL1-991, Brasil, tunicates, Rio de Janeiro, Ascídias, taxonomia, Zoology, Brazil, tunicados
taxonomy, Ascidians, QL1-991, Brasil, tunicates, Rio de Janeiro, Ascídias, taxonomia, Zoology, Brazil, tunicados
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