Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe

By

Dedov, Ivailo
Manh Vu, Quang
Trieu Anh, Tuan

Type

Article

Date of Publication

2025-8-25

Original Publication

ZooKeys

Volume

1249

Pages

317--338

Subjects

Biodiversity , determination key , land gastropods , new species , Southeast Asia , taxonomy , unusual anatomical structures

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1249.155684

 

Abstract

A list of species of slugs and semi-slugs of the superfamily Helicarionoidea collected in North Vietnam in 2023 is presented. A new species of the genus Ostracolethe Simroth, 1901, Ostracolethe penevi Dedov & Vu, sp. nov., is described, which was collected from a single locality in North Vietnam. The validity of Ostracolethe fruhstorfferi Simroth, 1901 is confirmed, and the unusual torus-toroid structure is discussed. A key for the determination of the helicarionoid genera of slugs and semi-slugs from North Vietnam is also provided.