Four new species of Georissa W. Blanford, 1864 (Gastropoda, Hydrocenidae) from Thailand

By

Klongklaew, Kanyaporn
Poeaim, Supattra
Dumrongrojwattana, Pongrat

Type

Article

Date of Publication

2024-10-4

Original Publication

Zoosystematics and evolution

Volume

100

Series / Issue

Issue: 4

Pages

1347--1360

Subjects

conchological , Neritimorpha , Southeast Asia , systematics , terrestrial snails

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia Pensoft

Identifiers

DOI: https://doi.org/10.3897/zse.100.128717

 

Abstract

Hydrocenid snails have received little research attention compared to other land snail groups, arguably due to their small size. The present study examines the diversity of hydrocenid snails in limestone hills in central, eastern and southern Thailand. Four new species of Georissa W. Blanford, 1864 are described: G. quinqueliratasp. nov. from central Thailand, G. sagittasp. nov. and G. kohsichangensissp. nov. from eastern Thailand, and G. digitinotasp. nov. from southern Thailand. These four new species are distinguished by unique characteristics in their shell, including protoconch sculpture and shell shape, operculum, and radula morphology. A phylogenetic analysis of mitochondrial DNA sequences confirms the distinctiveness of all four species.