Land snails and slugs of Bau limestone hills, Sarawak (Malaysia, Borneo), with the descriptions of 13 new species

This study presents a list of land snails and slugs found on limestone hills in the District of Bau, the state of Sarawak in Malaysian Borneo. Systematic and random sampling for land snails was conducted at eight limestone outcrops, namely, Gunung Stulang, Padang Pan, Gunung Kapor, Gunung Lobang Angin, Gunung Doya, Gunung Batu, Bukit Sekunyit and Gunung Sebayat. A total of 122 land snail species was documented with photographs of each species. Of the 122 species collected, 13 are new to science, namely, Acmellabauensissp. nov., Japoniabauensissp. nov., Plectostomamargaretchanaesp. nov., Microcystinaarabiisp. nov., Microcystinaatonisp. nov., Microcystinapariparisp. nov., Microcystinaliratasp. nov., Microcystinaoswaldbrakenisp. nov., Microcystinakilatsp. nov., Philalankajambusanensissp. nov., Everettiamicrorhytidasp. nov., Everettiaminutasp. nov., and Paralaomasarawakensissp. nov.

A cybertaxonomic revision of the micro-landsnail genus Plectostoma Adam (Mollusca, Caenogastropoda, Diplommatinidae), from Peninsular Malaysia, Sumatra and Indochina

Plectostoma is a micro land snail restricted to limestone outcrops in Southeast Asia. Plectostoma was previously classified as a subgenus of Opisthostoma because of the deviation from regular coiling in many species in both taxa. This paper is the first of a two-part revision of the genus Plectostoma, and includes all non-Borneo species. In the present paper, we examined 214 collection samples of 31 species, and obtained 62 references, 290 pictures, and 155 3D-models of 29 Plectostoma species and 51 COI sequences of 19 species. To work with such a variety of taxonomic data, and then to represent it in an integrated, scaleable and accessible manner, we adopted up-to-date cybertaxonomic tools. All the taxonomic information, such as references, classification, species descriptions, specimen images, genetic data, and distribution data, were tagged and linked with cyber tools and web servers (e.g. Lifedesks, Google Earth, and Barcoding of Life Database). We elevated Plectostoma from subgenus to genus level based on morphological, ecological and genetic evidence. We revised the existing 21 Plectostoma species and described 10 new species, namely, P. dindingensissp. n., P. mengaburensissp. n., P. whittenisp. n., P. kayianisp. n., P. davisonisp. n., P. relauensissp. n., P. kubuensissp. n., P. tohchinyawisp. n., P. tenggekensissp. n., and P. ikanensissp. n. All the synthesised, semantic-tagged, and linked taxonomic information is made freely and publicly available online.