New records of Bentharca asperula (Dall, 1881) (Mollusca, Bivalvia, Arcidae) from Brazil

Biota Neotropica

Flávio Dias Passos²  Adolpho Birman¹ 

[1] ,Universidade Estadual de Campinas Instituto de Biologia Departamento de Biologia AnimalCampinas SP ,Brazil

关键词: Bentharca asperula;    Brazil;    Arcidae;    Bivalvia;    Mollusca;    Bentharca asperula;    Brasil;    Arcidae;    Bivalvia;    Mollusca;   

DOI  :  10.1590/S1676-06032009000400032

来源: SciELO

【 摘 要 】

Specimens of Bentharca asperula (Dall, 1881) were obtained from deep waters of the coasts of the Rio de Janeiro and São Paulo States, and their shells described, illustrated and compared with descriptions and illustrations obtained from the literature. This species has a small strongly inequilateral shell, trapezoidal in outline and expanded ventro-posteriorly; their umbos are placed at about 1/3 of the anterior length of their straight hinge line. The external sculpture consists of irregular spaced concentric ridges, intercepted by fine radiating striae; the periostracum is hairy, forming a cover as a thatch. Hinge teeth are small, disposed in two series interrupted by the ligament. With this finding of living specimens from the Bacia de Campos, the distribution of B. asperula can now be extended in the Brazilian coast, confirming its wide spread in the Atlantic Ocean.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License