title: Seven new hypselostomatid species from China, including some of the world's smallest land snails (Gastropoda, Pulmonata, Orthurethra).
abstract: Seven new species of Hypselostomatidae are described from the Chinese province Guangxi: Angustopila dominikae Páll-Gergely & Hunyadi, sp. n., Angustopila fabella Páll-Gergely & Hunyadi, sp. n., Angustopila subelevata Páll-Gergely & Hunyadi, sp. n., Angustopila szekeresi Páll-Gergely & Hunyadi, sp. n., Hypselostoma socialis Páll-Gergely & Hunyadi, sp. n., Hypselostoma lacrima Páll-Gergely & Hunyadi, sp. n. and Krobylos sinensis Páll-Gergely & Hunyadi, sp. n. The latter species is reported from three localities. All other new species are known only from the type locality. Specimens nearly identical to the type specimens of Angustopila huoyani Jochum, Slapnik & Páll-Gergely, 2014 were found in a cave in northern Guangxi, 500 km from the type locality. Adult individuals of Angustopila subelevata sp. n. (shell height = 0.83-0.91 mm, mean = 0.87 mm) and Angustopila dominikae sp. n. (shell height of the holotype = 0.86 mm) represent the smallest known members of the Hypselostomatidae, and thus are amongst the smallest land snails ever reported. We note that Pyramidula laosensis Saurin, 1953 might also belong to Krobylos. Paraboysidia neglecta van Benthem Jutting, 1961, which was previously included in Angustopila, is classified in Hypselostoma.
authors.affiliation: Department of Biology, Shinshu University, Matsumoto 390-8621, Japan.
authors.forename: Barna
authors.initials: B
authors.lastname: Páll-Gergely
authors.affiliation: Adria sétány 10G 2/5., Budapest 1148, Hungary.
authors.forename: András
authors.initials: A
authors.lastname: Hunyadi
authors.affiliation: Naturhistorisches Museum der Burgergemeinde Bern, CH-3005 Bern, Switzerland ; Institute of Ecology and Evolution, University of Bern, 3012 Bern, Switzerland.
authors.forename: Adrienne
authors.initials: A
authors.lastname: Jochum
authors.affiliation: Department of Biology, Shinshu University, Matsumoto 390-8621, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Asami
keywords: Pupillidae; Taxonomy; Vertiginidae; apertural barriers; dwarfism; land snail