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 Pupina stoliczkai Jirapatrasilp sp. nov. Figs 36G, H , 40C, D Type material. Holotype CUMZ 12147/1 (Figs 36G , 40C ), 10 Sept. 2016, coll. R. Srisonchai, A. Pholyotha, T. Seesamut. Measurement: shell height 9.4 mm, shell width 6.3 mm and 61/2 whorls. Paratypes CUMZ 12147/2 (1 specimen in ethanol) and NHMUK 20210336 (1 shell; Figs 36H , 40D ), same data as holotype. Type locality. Wat Ratburana School, Lang Suan District, Chumpon Province, Thailand, 9°56'18.0"N , 99°02'25.5"E , 20 m amsl. Diagnosis. Shell ovate-fusiform; last whorl ca. 70% of shell height. Apertural lip highly thickened and slightly expanded; with a furrow between inner and outer peristomes; inner peristome thickened, cord-like. Both parietal and columellar teeth fin-shaped, very thickened, always located next to and not covering its respective canal. Posterior canal slightly bulging outward. Differential diagnosis. P. stoliczkai sp. nov. is most similar to P. aureola in shell shape in having both fin-shaped and highly thickened parietal and columellar teeth located next to their respective canals, and the posterior canal slightly bulging outward. However, P. stoliczkai sp. nov. has a furrow between inner and outer peristomes, with inner peristome thickened and cord-like. Description. Shell height 6.3-6.4 mm; shell width 9.0-9.5 mm. Shell ovate-fusiform, solid, semi-transparent, reddish brown, devoid of prominent sculpture on glazed smooth surface. Apex obtuse. Growth lines on shell surface inconspicuous. Whorls 6- 61/2 , last whorl large (ca. 70% of shell height). Spire angle ca. 80-90°; slightly extended. Sutures slightly impressed, but shallow. Aperture circular; lip highly thickened (ca. 0.4-0.5 mm wide and 0.6-0.7 mm thick) with paler colour, slightly expanded. Aperture with a furrow between inner and outer peristomes, with inner peristome thickened, cord-like. Parietal callus sharply defined and thickened with paler colour. Peristome interrupted by two canals; posterior canal ca. 1.4 mm long and 0.7 mm at its widest, slightly bulging outward, continuing obliquely and widening vertically upward when observed from lateral view. Anterior canal curved and continuing obliquely upward ca. 2.0 mm. Parietal tooth fin-shaped, highly thickened (ca. 1.5 mm long, 0.5 mm at its widest and 0.3 mm thick), always located next to and not covering posterior canal. Columellar tooth fin-shaped, highly thickened (ca. 1.9 mm long, 0.5 mm at its widest and 0.3 mm thick), located next to anterior canal. Umbilicus closed. Operculum round, thick, flat, multispiral, whitish to pale yellow, opaque corneous with smooth edge. Etymology. The specific epithet is dedicated to F. Stoliczka, a Czech palaeontologist and zoologist, who described P. aureola , to which this new species is associated with. Distribution. This new species is found only from the type locality. Figure 27. Distribution map of the Pupina arula species group: Pupina peguensis (triangle), Pupina crosseana (plus sign), Pupina siamensis (circle), Pupina bilabiata sp. nov. (square), and Pupina godwinausteni sp. nov. (star). Each red symbol indicates the type locality of its respective taxon. The occurrences of Pupina arula and Pupina mouhoti in northern Thailand are uncertain, thus their distributions are not mapped. Figure 28. Shells of Pupina arula species group from mainland Southeast Asia A-G Pupina peguensis A syntype of Pupina blanfordi NHMUK 1888.12.4.100 and specimens B CUMZ 12105 C CUMZ 12050 D CUMZ 12103 E NHMUK ex. Cuming coll. F CUMZ 12094, and G CUMZ 12108 H-J Pupina crosseana H lectotype MNHN-IM-2000-35834 I paralectotype RBINS MT966/10591, and J specimen CUMZ 12049 K, L Pupina siamensis K lectotype SMF 109948 and L specimen CUMZ 12052 M-P Pupina bilabiata sp. nov. M holotype CUMZ 12073/1 and specimens N CUMZ 12079 O CUMZ 12081, and P CUMZ 12086 Q, R Pupina godwinausteni sp. nov. Q holotype CUMZ 12090/1 and R paratype CUMZ 12090/2. Photo: P. Maestrati, MNHN ( H ), F. Trus, RBINS ( I ). Figure 29. Shells of Pupina arula species group from mainland Southeast Asia A, B Pupina arula A syntype UMZC I.103025 and B specimen NHMUK 1888.12.4.109. C, D Pupina mouhoti , possible syntypes NHMUK ex. Cuming coll. E, F Pupina vescoi E syntype NHMUK 1893.2.4.767 and F specimen SMF 109956/1 G Pupina perakensis , lectotype SMF 109969/1 H Pupina excisa , lectotype SMF 110778/1 I-K Pupina exclamationis I, J syntypes MNHN-IM-2000-35840 and K specimen NHMUK 1901.12.23.205 "forma minor". Photo: J. Ablett, H. Taylor, NHM ( A ), A. Lardeur, P. Maestrati, MNHN ( I, J ). Figure 30. A-D Pupina peguensis : specimens A CUMZ 12050 from Chai Thong Wararam Temple, Nakhon Sawan B CUMZ 12105 from Thep Phithak Punnaram Temple, Nakhon Ratchasima C CUMZ 12108 from Tham Thep Bandan Temple, Phetchabun, and D CUMZ 12094 from Khao Tham Phra Temple, Chiang Rai E, F Pupina crosseana E lectotype MNHN-IM-2000-35834 from Cambodge and F paralectotype RBINS MT966/10591 from Phnom-Rohan, Cambodge. Photo: P. Maestrati, MNHN ( E ), F. Trus, RBINS ( F ). Figure 31. A Pupina crosseana , specimen CUMZ 12049 from Khao Jedee Temple, Nakhon Sawan B, C Pupina siamensis : B lectotype SMF 109948 and C specimen CUMZ 12052 from Sri Thong Cave, Sra Keo D-F Pupina bilabiata sp. nov. D holotype CUMZ 12073/1, and specimens E CUMZ 12079 from Tham Pha Ya Temple, Loei and F CUMZ 12081 from Pha Jor Cave, Nong Bua Lam Phu. Figure 32. Live specimens of A Pupina siamensis , specimen CUMZ 12071 from Tham Khao Loi Temple, Rayong B-D Pupina bilabiata sp. nov. B paratype CUMZ 12073/2 from Banpot Pisai Temple, Chumphon and specimens C CUMZ 12082 from Pha Jor Cave, Nong Bua Lam Phu and D CUMZ 12087 from Ban Yai, Surat Thani E, F Pupina godwinausteni sp. nov.: paratypes E CUMZ 12090/26 and F CUMZ 12091 from Khao Wong Cave, Uthai Thani G, H Pupina aureola : specimens G CUMZ 12117 from Lod Cave, Nakhon Sri Thammarat and H CUMZ 12121 from Tham Thong Panara Temple, Nakhon Sri Thammarat, showing its microhabitat in rotten log. All not to scale. Figure 33. A Pupina bilabiata sp. nov., specimen CUMZ 12086 from Na San Temple, Surat Thani B, C Pupina godwinausteni sp. nov. B holotype CUMZ 12090/1 and C paratype CUMZ 12090/2 from Khao Wong Cave, Uthai Thani D Pupina arula , syntype UMZC I.103025 "Ind" E Pupina mouhoti , possible syntype NHMUK ex. Cuming coll. from Camboja F Pupina vescoi , syntype NHMUK 1893.2.4.767 from Cochin China. Photo: J. Ablett, H. Taylor, NHM ( D ). Figure 34. A Pupina vescoi , specimen SMF 109956/1 from Cochin China B, C Pupina exclamationis B syntype MNHN-IM-2000-35840 from Tonkin and C specimen NHMUK 1901.12.23.205 "forma minor" from Than-Moi, Tonkin D Pupina perakensis , lectotype SMF 109969/1 from Bukit Pondong, Perak E Pupina excisa , lectotype SMF 110778/1 from Kelantan F Pupina aureola , possible syntype NHMUK 1988.12.4.101 from Pinang. Photo: P. Maestrati, MNHN ( B ).