Annotated checklist of the operculated land snails from Thailand (Mollusca, Gastropoda, Caenogastropoda): the family Pupinidae, with descriptions of several new species and subspecies, and notes on classification of Pupina Vignard, 1829 and Pupinella Gray, 1850 from mainland Southeast Asia Author Jirapatrasilp, Parin https://orcid.org/0000-0002-5591-6724 Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand Author Sutcharit, Chirasak Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand jirasak4@yahoo.com Author Panha, Somsak Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand & Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand somsak.pan@chula.ac.th text ZooKeys 2022 2022-08-25 1119 1 115 http://dx.doi.org/10.3897/zookeys.1119.85400 journal article http://dx.doi.org/10.3897/zookeys.1119.85400 1313-2970-1119-1 A3BE91C6B79344E1A886A803BF104D8B F158A7C5261D52B69288A62F3C777CAF Family Pupinidae Pfeiffer, 1853 Remarks. Currently, there are three subfamilies within the family Pupinidae : Pupininae , Liareinae Powell, 1946, and Pupinellinae Kobelt, 1902 ( Bouchet et al. 2017 ). The subfamily Liareinae was endemic to New Zealand, originally established as a family ( Powell 1946 ), and this familial assignment was adopted by Egorov (2013) . Later, Ponder and Waren (1988) treated this taxon as a subfamily of the Pupinidae ; this classification scheme was adopted by Bouchet et al. (2017) and MolluscaBase (2022) . The subfamily Pupinellinae was originally established as a section under the Pupinidae , and the only diagnostic character that distinguished this subfamily from the Pupininae is the shell surface ( Kobelt 1902 ). The Pupininae has a shell surface covered by glaze, which is glossy and completely smooth, whereas the shell surface of the Pupinellinae is without glaze, being either striated, matt or silky-shiny ( Kobelt 1902 ; Egorov 2013 ). Whether this character is a subfamilial synapomorphy needs further confirmation because at least one Pupina species has a matt surface (e.g., P. arula ) and some Pupinella species have a somewhat glossy surface (e.g., P. mansuyi , P. illustris ).