Integrative taxonomic revision of the land snail genus Sarika Godwin-Austen, 1907 in Thailand, with descriptions of nine new species (Eupulmonata, Ariophantidae) Author Pholyotha, Arthit Biological Sciences Program, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand & Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand https://orcid.org/0000-0001-6677-1164 Author Sutcharit, Chirasak Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand jirasak4@yahoo.com Author Tongkerd, Piyoros Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand Author Panha, Somsak Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand text ZooKeys 2020 976 1 100 http://dx.doi.org/10.3897/zookeys.976.53859 journal article http://dx.doi.org/10.3897/zookeys.976.53859 1313-2970-976-1 B755A1D5D42D4CA589BE10C11EAB4580 1C1677B3CFE65ECEADF5CA56DACD0B9C Sarika rex (Preston, 1909) Fig. 50G Macrochlamys rex Preston, 1909: 202, pl. 8, fig. 2. Type locality: "Nan-ko, Siam" [Thailand]; Adam, 1971: 58. Type material. The unique name bearing type could not be located. The photograph of the type specimen from the original description is reproduced herein (Fig. 50G ). Diagnosis. Shell conoid-depressed, large to very large size (shell width up to 30.0 mm, shell height up to 16.0 mm) and thin. Shell surface rather smooth with fine growth lines, polished below but not polished above; shell colour pale yellowish brown. Whorls 61/2 , increasing regularly; body whorl large and rounded. Spire very high-conical; suture impressed. Aperture crescent-shaped and obliquely opened. Peristome simple. Columellar margin simple. Umbilicus narrowly opened (Fig. 50G ). Remarks. We assigned this species to the genus Sarika due to its very large shell size, and none of any Macrochlamys species could reach that diameter (Table 5 ). Preston (1909) noted that S. rex is a large-sized species and is generally similar to S. pumicata , but S. rex tended to have more tumid and higher spire than S. pumicata , as well as a rounded body whorl, whereas S. pumicata has an obtusely angulated periphery. Sarika rex is known only from the type locality in Thailand; however, the precise type locality could not be determined. To date, no living specimen that matches this species has been found, and the generic assignment is still provisional. New specimens with precise collection locality and genital anatomy are necessary to verify the taxonomic position of this species.