title: Sabellaria and Lygdamis (Polychaeta: Sabellariidae) from reefs off northeastern Brazil including a new species of Sabellaria.
abstract: Members of the polychaete taxon Sabellariidae Johnston, 1865 are known to live in sand tubes cemented onto rocky substrata, mollusk shells, or sea grasses. Of 37 known Sabellaria species, only nine were reported for the Brazilian coast, in all cases being associated with aggregates of other species. The genus is considered cosmopolitan. Herein we describe for the first time an aggregate of sabellariids composed by Sabellaria nanella and Sabellaria wilsoni. In addition, we describe a new species of Sabellaria. Lygdamis are represented by solitary species. None of the 17 known species were previously reported from the southwestern Atlantic Ocean. We report Lygdamis rayrobertsi for the first time in the South Atlantic.
authors.affiliation: Laboratório de Invertebrados Paulo Young, Departamento de Sistemática e Ecologia, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba Campus I, CEP 58.059-900, João Pessoa, Paraíba, Brazil. Laboratório de Ecossistemas Costeiros, Departamento de Biologia, Centro de Ciências Biológicas e da Saúde, Universidade Federal de Sergipe, CEP 49.100-000, Aracaju, Sergipe, Brazil.; Email: enteropneusta@gmail.com.
authors.forename: André Souza
authors.initials: AS
authors.lastname: Dos Santos
authors.affiliation: Laboratório de Polychaeta, Instituto de Biologia, Departamento de Biologia Animal, Universidade Federal Rural do Rio de Janeiro, CEP 23.851-970, Seropédica, Rio de Janeiro, Brazil.; Email: unknown.
authors.forename: Ana Claudia Dos Santos
authors.initials: AC
authors.lastname: Brasil
authors.affiliation: Laboratório de Invertebrados Paulo Young, Departamento de Sistemática e Ecologia, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba Campus I, CEP 58.059-900, João Pessoa, Paraíba, Brazil.; Email: unknown.
authors.forename: Martin Lindsey
authors.initials: ML
authors.lastname: Christoffersen
mesh_terms: D063147:Animal Distribution; D000818:Animals; D001267:Atlantic Ocean; D001938:Brazil; D057894:Coral Reefs; D011077:Polychaeta / Q000033:anatomy & histology* / Q000145:classification*; D013045:Species Specificity