Contributions of a small collection of terrestrial microsnails (Pupilloidea, Hypselostomatidae) from Myanmar with description of three new species

Tongkerd, Piyoros and Lwin, Ngwe and Páll-Gergely, Barna and Chanabun, Ratmanee and Pholyotha, Arthit and Prasankok, Pongpun and Seesamut, Teerapong and Siriwut, Warut and Srisonchai, Ruttapon and Sutcharit, Chirasak and Panha, Somsak (2024) Contributions of a small collection of terrestrial microsnails (Pupilloidea, Hypselostomatidae) from Myanmar with description of three new species. ZOOKEYS, 1195. pp. 157-197. ISSN 1313-2989

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Abstract

Land snails were collected for the project ‘Conserving Myanmar’s Karst Biodiversity’ from the limestone karsts in Mon, Kayin, and Shan states and in the regions of Tanintharyi and Mandalay between 2015 and 2017, through cooperation with Fauna and Flora International (FFI) and the Forestry Department of Myanmar. Here, we report on a portion of the collection, and list 17 species from seven genera of the Hypselostomatidae microsnails. Three new species from two genera are described as Bensonella taiyaiorum Tongkerd & Panha, sp. nov. , B. lophiodera Tongkerd & Panha, sp. nov. , and Gyliotrachela aunglini Tongkerd & Panha, sp. nov. All new species are known only from the type locality in Shan State ( Bensonella ) and Kayin State ( Gyliotrachela ). A new combination of Acinolaemus dayanum and three newly recorded species, namely A. cryptidentatus , B. anguloobtusa and G. hungerfordiana are discussed. The low morphological variability of the widely distributed G. hungerfordiana is discussed, and two species are proposed for formal synonymisation. Constituting the first records for Myanmar, five species of Bensonella and two species of Acinolaemus were collected.

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