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

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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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          Annotated checklist of the terrestrial molluscs from Laos ( Mollusca , Gastropoda )

          Abstract The land area of Laos is composed of a large variety of undisturbed habitats, such as high mountainous areas, huge limestone karsts and the lower Mekong Basin. Therefore, Laos is expected to have a high species diversity, especially for the land snails. However, with respect to research on malacology, Laos is probably the least well-researched area for land snail diversity in Indochina (including Laos) over the past few centuries. The handful of species lists have never been systematically revised from the colonial period to the present, so these classifications are outdated. Herein we present the first comprehensive annotated checklist with an up-to-date systematic framework of the land snail fauna in Laos based on both field investigations and literature surveys. This annotated checklist is collectively composed of 231 nominal species (62 ‘prosobranch’ and 169 heterobranches), of which 221 nominal species are illustrated. The type specimens of 143 species from several museum collections and/or 144 species of newly collected specimens are illustrated. There are 58 species recorded as new to the malacofauna of the country, and two new replacement names are proposed as Hemiplecta lanxangnica Inkhavilay and Panha, nomen novum ( Ariophantidae ) and Chloritis khammouanensis Inkhavilay and Panha, nomen novum ( Camaenidae ). Four recently described species of the genus Amphidromus from Laos, “thakhekensis”, “richgoldbergi”, “attapeuensis” and “phuonglinhae” are synonymized with previously described species. In addition, thirteen nominal species are listed as uncertain records that may or may not occur in Laos. This annotated checklist may inspire malacologists to carry on systematic research in this region.
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            Diversity and biogeography of land snails (Mollusca, Gastropoda) in the limestone hills of Perak, Peninsular Malaysia

            Abstract Limestone hills are now gaining global conservation attention as hotspots for short-range endemic species. Levels of land snail endemism can be high at limestone hills, especially at hill clusters that are geographically isolated. In the State of Perak, Peninsular Malaysia, limestone hills have been opportunistically surveyed for land snails in the past, but the majority have yet to be surveyed. To address this knowledge gap, we systematically surveyed the terrestrial malacofauna of 12 limestone hills that, based on our opinion, are a representation of the limestone land snail assemblages within the State. Our inventory yielded high sampling completeness (>85%). We found 122 species of land snails, of which 34 species were unique to one of the surveyed hills. We identified 30 species that are potentially new to science. The number of land snail species recorded at each hill ranged between 39 and 63 species. Four of the sampled limestone hills namely, Prk 01 G. Tempurung, Prk 55 G. Pondok, Prk 47 Kanthan, and Prk 64 Bt Kepala Gajah, have high levels of species richness and unique species, representing 91% of the total species recorded in this study. We identified two clusters of limestone hills in central Perak with distinct differences in land snail species composition – a northern hill cluster on elevated granite bedrock and southern hill cluster in a low-lying valley surrounded by alluvial soils. As limestone hills continue to be quarried to meet the cement demand, the four identified limestone hills, along with other hills from the two clusters, warrant urgent conservation attention in order to maintain high species diversity within Perak’s terrestrial malacofauna.
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              MOLECULAR PHYLOGENY OF CERTAIN THAI GASTROCOPTINE MICRO LAND SNAILS (STYLOMMATOPHORA: PUPILLIDAE) INFERRED FROM MITOCHONDRIAL AND NUCLEAR RIBOSOMAL DNA SEQUENCES

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                Author and article information

                Contributors
                Journal
                Zookeys
                Zookeys
                2
                urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2024
                14 March 2024
                : 1195
                : 157-197
                Affiliations
                [1 ] Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
                [2 ] Fauna and Flora International, No. 35, 3rd Floor, Shan Gone Condo, Myay Ni Gone Market Street, Sanchaung Township, Yangon, Myanmar
                [3 ] Plant Protection Institute, Centre for Agricultural Research, ELKH, Herman Ottó út 15, 1022 Budapest, Hungary
                [4 ] Program in Animal Science, Faculty of Agricultural Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand
                [5 ] Biodiversity and Utilization Research Unit, Center of Excellence in Modern Agriculture, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand
                [6 ] School of Biology, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
                [7 ] Department of Biology, Faculty of Science, Rangsit University, Pathum Thani 12000, Thailand
                [8 ] Animal Systematics and Molecular Ecology Laboratory, Department of Biology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
                [9 ] Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
                [10 ] Academy of Science, The Royal Society of Thailand, Dusit, Bangkok 10300, Thailand
                Author notes
                Corresponding authors: Somsak Panha ( somsak.pan@ 123456chula.ac.th); Chirasak Sutcharit ( chirasak.s@ 123456chula.ac.th)

                Academic editor: Menno Schilthuizen

                Author information
                https://orcid.org/0000-0001-9221-9293
                https://orcid.org/0000-0002-4394-3741
                https://orcid.org/0000-0002-6167-7221
                https://orcid.org/0000-0003-4584-2773
                https://orcid.org/0000-0001-6677-1164
                https://orcid.org/0000-0001-5967-223X
                https://orcid.org/0009-0003-9589-8641
                https://orcid.org/0000-0001-6760-9724
                https://orcid.org/0000-0002-7142-0999
                https://orcid.org/0000-0001-7670-9540
                https://orcid.org/0000-0002-4431-2458
                Article
                112112
                10.3897/zookeys.1195.112112
                10958184
                38525356
                06f24673-9f98-4fd1-80ac-595f8bb5b641
                Piyoros Tongkerd, Ngwe Lwin, Barna Páll-Gergely, Ratmanee Chanabun, Arthit Pholyotha, Pongpun Prasankok, Teerapong Seesamut, Warut Siriwut, Ruttapon Srisonchai, Chirasak Sutcharit, Somsak Panha

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 03 September 2023
                : 09 February 2024
                Funding
                Faculty of Science, Chulalongkorn University
                Categories
                Research Article
                Gastropoda
                Systematics
                Cenozoic
                Asia

                Animal science & Zoology
                conservation,endemism,ffi,limestone,systematics
                Animal science & Zoology
                conservation, endemism, ffi, limestone, systematics

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