Redescription and geographical distribution of Leiostracus obliquus (Reeve, 1849) (Mollusca, Gastropoda, Simpulopsidae)

By

Macedo, Maria Isabel
Ovando, Ximena M. C.
D'ávila, Sthefane

Type

Article

Date of Publication

2023

Original Publication

ZooKeys

Volume

1167

Pages

223--240

Subjects

Anatomy , gastropods , Land snails , Orthalicoidea , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1167.98707

 

Abstract

Leiostracus Albers, 1850 was established to allocate land snails from Central America and Northern South America. Currently, approximately 19 species are considered valid. However, for most of them, the internal morphology is unknown. Leiostracus obliquus was described as a species of Bulimus from the state of Bahia based on shell characters. Until now, knowledge of this species has been scarce. The discovery of ethanol-preserved specimens from MZSP of this species allowed us to characterize, for the first time, the internal anatomy of this species and update its distribution. The shell of L. obliquus has seven to eight whorls and a wide pale-pink disrupted band all over the teleoconch. The rachidian tooth is small rectangular, symmetric, with round edges, and without differentiated cusps. After comparing the anatomy and radular characters between the shells of L. obliquus and L. carnavalescus, we found remarkable similarities in the morphology and color pattern.