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Article
Published: 2020-11-12

Pilargidae (Annelida: Phyllodocida) from coastal and deep waters of the Southwestern Atlantic, with descriptions of two new species

Departamento de Biología, Universidad Autónoma de Madrid, 28049, Madrid, Spain.
Programa de Pós-Graduação em Ciências Ambientais e Conservação, Instituto de Biodiversidade e Sustentabilidade, Universidade Federal do Rio de Janeiro, 27965-045, Macaé, RJ, Brazil.
Departamento de Zoologia, Universidade Federal do Rio de Janeiro, 21941-599, Rio de Janeiro, RJ, Brazil.
Museu Nacional, Universidade Federal do Rio de Janeiro, 20940-040, Rio de Janeiro, RJ, Brazil.
Museum and Art Gallery of the Northern Territory, PO Box 4646, Darwin NT 0801, Australia.
Departamento de Zoologia, Universidade Federal do Rio de Janeiro, 21941-599, Rio de Janeiro, RJ, Brazil.
Campos Basin deep sea Ancistrosyllis Glyphohesione Pilargis polychaete Annelida

Abstract

We describe seven species of Pilargidae from the coast and deep sea (300–1400 m deep) of southeastern Brazil, belonging to the genera Ancistrosyllis McIntosh, 1878, Cabira Webster, 1879, Glyphohesione Friedrich, 1950, Hermundura Müller, 1858, and Pilargis Saint-Joseph, 1899. Of those, two are new species (Glyphohesione campensis sp. nov. and Pilargis falconae sp. nov.) and two are new records of Ancistrosyllis for Brazil. Glyphohesione campensis sp. nov. is distinguished from its congeners by fewer neurochaetae, the anteriormost appearance of first notopodial spines, and intermediate relative length of dorsal and ventral cirri. Pilargis falconae sp. nov. is diagnosed by the presence of parapodial glands from the first chaetiger on the dorsal surface and from the sixth chaetiger on the ventral surface; and neurochaetae smooth capillaries and limbates with unidentate tips. Keys to pilargid species reported from, or likely to occur in, Brazilian waters are provided.

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