ISSN 2755-3531
Zhe-Yu Chen, Yi-Feng Fang & Li-Wen Lin
Abstract. Diaphera bagua Z.-Y. Chen, sp. nov. is described and illustrated from Guangxi, China. The new species can be distinguished from Diaphera lini Z.-Y. Chen & Páll-Gergely, 2020, also known from Guangxi, by its glossy shell and closed umbilicus. Two known species, Sinoennea atomaria (Dautzenberg, 1894) from Vietnam and Sinoennea ziminae Yang et al., 2012 from Hubei, China, are reassigned to Diaphera based on shell morphology.
Key words. Asia, carnivorous snail, morphology, new taxa, taxonomy
Published 21 July 2026
DOI. https://doi.org/10.61733/jconch/4575
Richard C. Preece, Tom S. White & Edmund Gittenberger
Abstract. Syntypes of Helix castra W.H. Benson, 1852 in the William Benson collection at the University Museum of Zoology, Cambridge, are a mixture of two species. A lectotype is designated to fix the name and stabilise the nomenclature of this species, now the type species of Sivella W.T. Blanford, 1863 (Helicarionidae, Durgellinae). The lectotype and paralectotype, the only specimens in the type series to match Benson’s description, are illustrated.
Published 21 July 2026
DOI. https://doi.org/10.61733/jconch/4576
Three new species of Clausiliidae (Gastropoda: Stylommatophora) from Shaanxi Province, China
Dimitry M. Palatov, Jozef Grego & Miklós Szekeres
Abstract. Shaanxi Province is divided by the transition line between the vegetation zones of subtropical evergreen and temperate deciduous broadleaf forests, which sets a limit to northward expansion for members of the clausiliid subfamily Phaedusinae. Due to this constraint and a modest interest of malacologists only eight, mostly widespread clausiliid species have been recorded reliably from this province. Here we introduce Euphaedusa vitrea sp. nov., Streptodera chertoprudi sp. nov., and Streptodera qinlingensis sp. nov., which were found during a 2010 trip to the Qinling Mountains in southern Shaanxi. Intriguingly, the new Streptodera species are sinistral members of a genus that previously was considered monotypic and dextral. The three new, apparently narrow endemic species suggest a higher-than-expected diversity of clausiliids in the forested areas of southern Shaanxi.
Published 24 July 2026
DOI. https://doi.org/10.61733/jconch/4577