Taxonomic Revision of the Anatomidae (Mollusca: Gastropoda: Vetigastropoda) from Brazil, with Description of Four New Species

Abstract

ABSTRACT A taxonomic revision of the family Anatomidae from Brazil led to the discovery of nine species, four of which are new. This contrasts with only two species previously recorded: Anatoma aedonia (Watson, 1886) and Anatoma proxima (Dall, 1927). The lectotype designation for A. aedonia by Geiger (2012) has clarified the identity of this taxon, which is now considered a rare species, mainly from deep waters. The holotype of A. proxima is lost (Geiger, 2012), and some very similar taxa occur sympatrically in the western Atlantic; accordingly, we designate here a neotype for Scissurella proxima and redescribe it, re-evaluating its shell variability and radula morphology. The review of a large amount of shells in malacological collections in Brazil, including material from recent dredging along the southeastern coast, revealed the occurrence of seven additional species: Anatoma americana Bandel, 1998, synonymized under A. proxima by Geiger (2012), is herein considered a valid species; Anatoma atlantica (...