Latest Articles from Zoosystematics and Evolution Latest 3 Articles from Zoosystematics and Evolution https://zse.pensoft.net/ Thu, 28 Mar 2024 15:58:15 +0200 Pensoft FeedCreator https://zse.pensoft.net/i/logo.jpg Latest Articles from Zoosystematics and Evolution https://zse.pensoft.net/ First record and description of three new species in the land snail genus Diplommatina Benson, 1849 (Caenogastropoda, Diplommatinidae) from Satun Province, Thailand https://zse.pensoft.net/article/99030/ Zoosystematics and Evolution 99(1): 195-207

DOI: 10.3897/zse.99.99030

Authors: Tuangthong Boonmachai, Elizabeth A. Bergey, Nattawadee Nantarat

Abstract: The micro land snail genus Diplommatina (family Diplommatinidae) is widely distributed in Southeast Asia and includes many endemic species. Three new species of Diplommatina are described from Satun Province in southern Thailand. Diplommatina bulonensis sp. nov., D. laemsonensis sp. nov. and D. prakaiphetensis sp. nov. are distinguished from other species in the genus by their shell size and shape, the number of radial ribs on the penultimate whorl, the number of whorls, and features of the peristome. The agreement between phylogenetic tree based on analyses of COI and 16S sequences and comparative morphology support the delineation of these new species which, when compared to related species, belong to well-differentiated clades. The K2P distance between any of the three new species and other Diplommatina species included in the molecular phylogenetic analysis was at least 5.5% in COI and 3.9% in 16S. Two of the three new species (D. prakaiphetensis sp. nov. and D. bulonensis sp. nov.) are apparently endemic to Prakaiphet Hill and Bulon Pai Island, respectively. Additionally, we documented a new regional record for D. naiyanetri in Satun Province. These new species and records contribute to the knowledge of Thailand’s land snail biodiversity and highlight the need of conservation protections for regional karst habitats.

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Research Article Tue, 7 Mar 2023 19:02:05 +0200
The operculate micro land snail genus Dicharax Kobelt & Möllendorff, 1900 (Caenogastropoda, Alycaeidae) in Thailand, with description of new species https://zse.pensoft.net/article/59143/ Zoosystematics and Evolution 97(1): 1-20

DOI: 10.3897/zse.97.59143

Authors: Parin Jirapatrasilp, Barna Páll-Gergely, Chirasak Sutcharit, Piyoros Tongkerd

Abstract: This study reviews the Dicharax species in Thailand. Altogether ten Dicharax species are reported, four of which are new to science and described herein. They are Dicharax borealis Jirapatrasilp & Páll-Gergely sp. nov., Dicharax burchi Jirapatrasilp & Páll-Gergely sp. nov., Dicharax panhai Jirapatrasilp & Páll-Gergely sp. nov. and Dicharax pongrati Jirapatrasilp & Tongkerd sp. nov. Alycaeus davisi Godwin-Austen, 1914 is regarded as a junior subjective synonym of Alycaeus cucullatus Theobald, 1870 (= D. cucullatus) based on a similar depressed-conical shell shape, a long sutural tube and a sharp swelling behind the peristome. Furthermore, the type locality of Alycaeus pratatensis Panha & Burch, 1997 (= D. pratatensis) had to be amended. Most important characters to distinguish Dicharax species are the general shell shape and relative lengths of teleoconch regions, whereas the spiral striation of R1, the shape of swelling of R3, the outer peristome crenulation and protrusion, and the exterior opercular sculpture show large intraspecific variability.

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Research Article Tue, 5 Jan 2021 09:10:13 +0200
A new troglobite species of Habeastrum Simone, 2019 from Brazil, and support for classification in Diplommatinidae (Mollusca, Caenogastropoda) https://zse.pensoft.net/article/53880/ Zoosystematics and Evolution 96(2): 639-647

DOI: 10.3897/zse.96.53880

Authors: Luiz Ricardo L. Simone, Daniel Caracanhas Cavallari, Rodrigo Brincalepe Salvador

Abstract: The genus Habeastrum Simone, 2019 was recently described based on empty shells, counting with two troglobite species. Conchological features allowed a preliminary classification in the caenogastropod family Diplommatinidae, but this family allocation was left open to future studies. Herein, we present a detailed anatomical study of newly acquired specimens, confirming the classification in Diplommatinidae. These new specimens, from Minas Gerais state, SE Brazil, belong to a new troglobite species described herein, Habeastrum strangei sp. nov. The present records extend the genus distribution ca. 1,100 km east-northeast.

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Research Article Wed, 16 Sep 2020 09:34:40 +0300