A new species of Cyrenoida (Bivalvia, Cyrenoididae) from the Western Atlantic, with remarks on Cyrenoididae anatomy

By

Romera, Bárbara
Simone, Luiz Ricardo Lopes de.
Marques, Rodrigo Cesar

Type

Article

Date of Publication

2024

Original Publication

Zoosystematics and evolution

Volume

100

Series / Issue

Issue: 2

Pages

543--553

Subjects

Anatomy , Bivalvia , Cyrenoida , Cyrenoididae , Estuary , mangrove , taxonomy , Western Atlantic

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia Pensoft

Identifiers

DOI: https://doi.org/10.3897/zse.100.121238

 

Abstract

Cyrenoida implexasp. nov. is the first species of Cyrenoididae in the Southern West Atlantic. This new species exhibits external similarities to C. floridana but is distinguished by distinct right hinge dentition, larger siphons and a more extensive siphonal area at the mantle border, an incurrent siphon with three rows of papillae, a lack of papillae at the middle mantle fold, and smaller adductor muscle volume. In the environment, it possesses a higher saline tolerance than C. floridana.