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Issue: Vol. 4173 No. 2: 4 Oct. 2016
Type: Article
Published: 2016-10-04
DOI: 10.11646/zootaxa.4173.2.2
Page range: 114–124
Abstract views: 78
PDF downloaded: 1

A new species of Pisionidens (Aiyar & Alikunhi, 1943) (Annelida: Sigalionidae) from Southeastern Brazil

Programa de Pós-Graduação em Biologia Marinha e Ambientes Costeiros, Universidade Federal Fluminense; CEP: 24020-141, Outeiro de São João Batista, Niterói, Rio de Janeiro, Brazil.
Departamento de Biologia Animal, Universidade Federal Rural do Rio de Janeiro; Caixa Postal 74524; CEP 23851-970, Seropédica, Rio de Janeiro, Brazil.
Departamento de Biologia Marinha, Universidade Federal Fluminense; CEP: 24020-141, Outeiro de São João Batista, Niterói, Rio de Janeiro, Brazil.
Annelida Polychaeta interstitial fauna Aphroditiformia São Sebastião Pisionidens caissara

Abstract

Herein we describe specimens found along the southeastern coast of Brazil which belong to a new species, P. caissara sp. nov. This species differs from the other species of the genus by the glabrous antennae and palps, proboscis extending up to the sixth segment, jaws with smooth cutting edge and a pair of lateral wing-like sheaths, two pairs of seriate male copulatory organs, first pair of testes on segment 19 and ovaries from segment 26 onward. Reproductive characters commonly used for characterizing species are also discussed.

 

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