Three new non-lacustrine species of the endemic freshwater gastropod genus Sulawesidrobia (Caenogastropoda, Truncatelloidea, Tateidae) from Sulawesi, Indonesia, with additional records of species from ancient Lake Poso

By

Kadow, Laura
Rintelen, Thomas von
Iqram, Muhammad
Bichain, Jean-Michel
Haase, Martin

Type

Article

Date of Publication

2025-8-26

Original Publication

Zoosystematics and evolution

Volume

101

Series / Issue

Issue: 4

Pages

1585--1600

Subjects

Anatomy , Molecular diagnosis , Morphology , riverine

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia Pensoft

Identifiers

DOI: https://doi.org/10.3897/zse.101.161812

 

Abstract

The vast majority of freshwater gastropods of the family Tateidae dwell in springs, small streams and the groundwater. In Sulawesi, however, all 31 described species occur in lake habitats. This exclusivity is certainly an artefact, a consequence of the lack of research in non-lacustrine habitats. Indeed, recent explorations discovered three species in non-lacustrine habitats, Sulawesidrobia lasoloensissp. nov. and S. marmersp. nov. in small streams in Southeast Sulawesi, and S. tilangaensissp. nov. in the spring-fed Tilanga natural pool in South Sulawesi. We describe these species based on shell morphology, anatomy as well as mitochondrial sequence data and, based on the latter, inferred their phylogenetic relationships. These analyses also included new samples from Lake Poso. Sulawesidrobia lasoloensissp. nov. and S. marmersp. nov. formed a sister group to a clade from the Malili-Lake system, whereas S. tilangaensissp. nov. was nested among the species from Lake Poso. Considering the long branches as well as the geographic distances between the new species and their respective lake relatives as well as the large unexplored areas, many more species dwelling in similar, for tateids more typical habitats are to be expected.