taxonID	type	description	language	source
B875F10AA7355F0993EA1DD2F53525CA.taxon	description	Figs 13 D, E, 14, 15, Table 4	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
B875F10AA7355F0993EA1DD2F53525CA.taxon	diagnosis	Diagnosis. Shell concave-conical, colourless, and with rectangular reticulations. Nine apertural dentitions, reaching peristome edge: three on parietal wall, palatal tubercle, four on palatal wall, and two on columellar wall. Palatal tubercle continuous with upper palatal plica.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
B875F10AA7355F0993EA1DD2F53525CA.taxon	description	Description. Shell concave-conical, colourless; spire high and growing regularly; last whorl expanded. Shell height 2.1 – 2.3 mm and shell width 1.8 – 1.9 mm. Apex blunt; protoconch ~ 2 whorls with fine spiral striae. Whorls 4 – 5, rounded and convex; suture wide and well impressed. Shell surface sculptured with equidistantly spaced spiral striae, crossed with irregular radial growth lines making a rectangular reticulated sculpture throughout shell. Penultimate whorl regularly coiled; last whorl bluntly shouldered and flattened below periphery. Aperture subovate; peristome thickened and slightly expanded. Aperture with nine or ten dentitions and with more or less strong knobs reaching peristome edge. Parietal wall with three lamellae: parietal lamella large, strongly developed, and high and long deeper inside aperture; infraparietal lamella long and low; angular lamella relatively smaller than parietal lamella, long, low near peristome edge, somewhat sinuous, and higher deeper inside aperture. Palatal tubercle strongly developed with triangular shape and continuous with upper palatal plica. Palatal wall with four plicae: upper-, inter-, lower-, and infra-palatal plicae connecting with peristome in the form of prominent tubercles then continuing as narrow and low, becoming strong and high inside aperture. Inter- and lower-palatal plicae much larger than upper palatal plica, infrapalatal plica smallest or may be absent (Fig. 15 A). Basal plica may be present with small and low ridge. Columellar wall with two lamellae: columellar lamella strong and distinct, continuing deep inside aperture; subcolumellar lamella small, low. Umbilicus widely perforate, ~ ⅓ of shell width, rounded and deep.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
B875F10AA7355F0993EA1DD2F53525CA.taxon	distribution	Distribution. Acinolaemus corusticorus sp. nov. is known only from the type locality. At this locality, the species is sympatric with five other hypselostomatid species: Hypselostoma pendulum (Panha & Burch, 2002), H. khaowongensis Panha, 1998, A. mueangonensis, A. rhamphodontis sp. nov., and Krobylos takensis Panha & Burch, 2004 (Panha 1998 b; Panha et al 2004).	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
B875F10AA7355F0993EA1DD2F53525CA.taxon	etymology	Etymology. The specific name corusticorus is from two Latin words co- meaning ‘ together or with’ and rusticor meaning ‘ living in the country’, referring to the new species being sympatric with two other congeners.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
9ACF366236835345BF248E1F6266AFEE.taxon	description	Fig. 10, Table 4	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
9ACF366236835345BF248E1F6266AFEE.taxon	diagnosis	Diagnosis. Shell concave-conical, peristome weakly expanded, rectangular reticulated sculpture present on shell surface. Apertural dentitions nine: three on parietal wall, three on palatal wall, one basal, and two on columellar wall. Palatal tubercle prominent and located between upper- and inter-palatal plicae.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
9ACF366236835345BF248E1F6266AFEE.taxon	description	Re-description. Shell weakly concave-conical, colourless; spire high and growing regularly; last whorl expanded. Shell height 1.6 – 1.8 mm and shell width 1.5 – 1.6 mm. Apex blunt; protoconch ~ 2 whorls with conspicuous spiral striae. Whorls ~ 4 – 5, bluntly shouldered, and convex; suture wide, well impressed, and deep. Shell surface sculptured with equidistantly spaced spiral striae, crossed with discontinuous and irregular radial ridge-like growth lines making rectangular reticulated sculpture throughout shell. Penultimate whorl regularly coiled to slightly sunken into last whorl. Last whorl rounded to weakly shouldered and flattened below periphery. Aperture subovate; peristome weakly expanded. Aperture with eight dentitions. Parietal wall with three lamellae: parietal lamella large, outer part low and reaching peristome edge, inner part strongly developed with long tall ridge located deeper inside aperture; infraparietal lamella prominent with a high ridge; angular lamella slightly curved, reaching peristome edge, a strong, tall ridge, long deeper inside aperture and with deep incision medially. Palatal tubercle strong, triangular, and situated on peristome edge between upper- and inter-palatal plicae. Three tiny and low plicae present in sinulus. Palatal wall with three plicae: upper-, inter-, and lower-palatal plicae with tall ridges and situated slightly inside aperture. Lower palatal plica tall and more prominent than upper- and inter-palatal plicae. Basal plica prominent with tall ridge. Columellar wall with two lamellae: columellar lamella is a very tall and distinct ridge; subcolumellar lamella a strong ridge and almost same size as basal plica. Umbilicus widely perforated, ~ ⅓ of shell width, rounded and deep.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
9ACF366236835345BF248E1F6266AFEE.taxon	distribution	Distribution. Acinolaemus cryptidentatus is known from the type locality at Tham Wua Cave, Mae Hong Son Province in northern Thailand (Changlom et al. 2019), and subsequently reported from Shan State, Myanmar (Tongkerd et al. 2024).	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
6482881F8AD25706BCF8AA1AB433E805.taxon	description	Figs 11, 12, 13 B, C, Table 4	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
6482881F8AD25706BCF8AA1AB433E805.taxon	diagnosis	Diagnosis. Shell concave-conical, brownish and with rectangular reticulated sculpture. Apertural dentitions nine, long and reaching peristome edge: three on parietal wall, three on palatal wall, one basal and one on columella wall. Palatal tubercle continuous with upper palatal plica.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
6482881F8AD25706BCF8AA1AB433E805.taxon	description	Re-description. Shell conical, concave-sided, brownish to pale brown; spire low to high, growing regularly, and sometimes slightly bent; last whorl expanded. Shell height 1.8 – 1.9 mm and shell width 1.7 – 1.8 mm. Apex blunt; protoconch spirally striated, ~ 2. Whorls ~ 5 – 6, rounded and convex; suture wide and well impressed. Shell surface sculptured with equidistantly spaced spiral striae, crossed with discontinuous and irregular radial growth lines making rectangular reticulated sculpture throughout shell. Penultimate whorl regularly coiled or sunken into last whorl. Last whorl bluntly shouldered and flattened below periphery. Aperture subcircular; peristome thickened and slightly expanded. Aperture with eight dentitions and with strong knobs reaching peristome edge. Parietal wall with three lamellae: parietal lamella large, outer part low, and inner part strongly developed and high, long deeper inside aperture; infraparietal lamella long and low; angular lamella prominent, high, long deeper inside aperture, and with slightly narrow and low ridge in middle. Palatal tubercle triangularly shaped, situated on peristome edge and connected to upper palatal plica. One or two tiny and low plicae (not reaching peristome edge) may be present in sinulus. Palatal wall with three plicae: upper-, inter-, and lower-palatal plicae ending on peristome edge as prominent tubercles, then continuing as narrow and low, but becoming strong deeper inside aperture. Basal plica low and long deeper inside aperture. Columellar lamella strong, high, and continuing deep inside aperture. Umbilicus widely perforate, ~ ⅓ of shell width, rounded and deep.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
6482881F8AD25706BCF8AA1AB433E805.taxon	distribution	Distribution. Acinolaemus mueangonensis has a distribution beyond its type locality in northern Thailand (Changlom et al. 2019), since during this study several specimens were collected in soil samples taken at the base of limestone cliffs and outcrops in Tak Province, ca 170 km south of the type locality.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
84775BC6930E5846B0954E48015FC6FD.taxon	description	Figs 8, 9, Table 4	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
84775BC6930E5846B0954E48015FC6FD.taxon	diagnosis	Diagnosis. Shell concave-conical, peristome weakly expanded. Apertural dentitions eleven or more, long and reaching peristome edge in form of prominent knobs: three on parietal wall, palatal tubercle, four on palatal wall, one basal, and two on columellar wall.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
84775BC6930E5846B0954E48015FC6FD.taxon	description	Re-description. Shell conical, with concave sides, colourless; spire low to high and growing regularly; last whorl expanded. Shell height 1.3 – 1.4 mm and shell width 1.4 – 1.5 mm. Apex blunt; protoconch ~ 1 ½ – 2 whorls, with narrow and fine spiral striae. Whorls ~ 4 – 5, rounded and convex; suture wide, well impressed, and deep. Shell surface sculptured with equidistantly spaced spiral striae, crossed with irregular radial growth lines making a rectangular reticulated sculpture throughout shell. Penultimate whorl regularly coiled; last whorl rounded. Aperture subovate; peristome thickened, slightly expanded and with weak depression on parietal side. Aperture with approx. ten or eleven dentitions and with strong knobs reaching peristome edge. Parietal wall with three lamellae: parietal lamella large, outer part low, inner part long with tall ridge and located deeper inside aperture; infraparietal lamella long and low; angular lamella long, consisting of two peaks of prominent tall ridges which are interrupted by a low wide ridge. Palatal tubercle rectangular, situated at peristome edge and continuous with upper palatal plica. Three tiny low plicae present (not reaching peristome edge) in sinulus. Palatal wall with four plicae: upper-, inter-, lower-, and infra-palatal plicae connecting peristome edge with prominent tubercles, then continuing with narrow, low ridge, and becoming a stronger fold deep inside aperture. Folding of inter- and lower-palatal plicae larger than upper- and infra-palatal plicae. Infrapalatal plica hooked (in holotype). Basal plica a low ridge and similar to infrapalatal plica. Columellar wall with three or four lamellae: columellar lamella strong, distinct, and tall ridge; supracolumellar and one or two subcolumellar lamellae present as low ridges. Umbilicus widely perforated, ~ ⅓ of shell width, rounded and deep.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
84775BC6930E5846B0954E48015FC6FD.taxon	distribution	Distribution. Acinolaemus ptychochilus is known from the type locality in Chiang Dao District, Chiang Mai Province in northern Thailand (Thompson and Upatham 1997).	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
93B43A14CFBA50E4B61CF690F5141DB2.taxon	description	Figs 16, 17, Table 4	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
93B43A14CFBA50E4B61CF690F5141DB2.taxon	diagnosis	Diagnosis. Shell concave-conical, with long and descending tuba, peristome expanded. Apertural dentitions eight, all longer inside aperture: infra parietal, parietal, angular, upper- and lower-palatal, palatal tubercle, basal, subcolumellar lamella, and columellar lamella. Umbilicus wide.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
93B43A14CFBA50E4B61CF690F5141DB2.taxon	description	Description. Shell concave-conical, colourless; spire depressed and growing regularly; last whorl broadly expanded. Shell height 1.3 – 1.4 mm (including tuba) and shell width 1.3 – 1.5 mm. Apex large and rounded; protoconch ~ 2 whorls and with prominent spiral striae. Whorls ~ 4 (excluding tuba), rounded and convex; suture wide, well impressed, and deep. Shell surface sculptured with equidistantly spaced spiral striae (14 – 16 on body whorl in frontal view), crossed with discontinuous narrow radial growth lines making a rectangular reticulated sculpture throughout shell. Penultimate whorl regularly coiled; last whorl rounded; tuba long, ~ ¼ whorl or less, strongly descending and curving. Aperture subovate, open ventrally to subventrally; peristome thin, weakly expanded, and with thin depression area on parietal side. Apertural dentitions eight and all knob-shaped when reaching peristome edge. Parietal wall with three lamellae: parietal lamella long, outer part low, and then gradually becoming strong, thickened, and high inside aperture; infraparietal lamella evenly low; angular lamella strong. Palatal tubercle prominent, triangular, situated at peristome lip, and continuous with upper palatal plica. Palatal wall with two plicae: upper- and lower-palatal plicae connecting with peristome edge in form of prominent knobs, then continuing as narrow and low deeper inside aperture, eventually becoming stronger and higher at innermost ends. Basal plica narrow, and low. Columellar wall with two lamellae: columellar lamella prominent with tall ridge; subcolumellar lamella very small and low. Umbilicus widely opened, occupying ~ ½ of shell width and showing all preceding whorls.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
93B43A14CFBA50E4B61CF690F5141DB2.taxon	distribution	Distribution. This new species is known only from the type locality, where the empty shells and one living snail were found in the soil, leaves, and twig litter at the base of a limestone cliff. The type locality is an island located in the reservoir of Bhumibol Dam, ca 45 km northwest of Tak Town. This island is ca 400 m long and 200 m wide and aligned north-south; the dry shells and the specimen were collected from the eastern slope of the island. The hills are low, with scattered land used by temples and with some exposed limestone rocks and cliffs. The vegetation on this island is dominated by low, dry, dipterocarp forest.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
93B43A14CFBA50E4B61CF690F5141DB2.taxon	etymology	Etymology. The specific name rhamphodontis is from two Greek words: rhamphos meaning ‘ curving beak’ and odontos meaning ‘ tooth’. Together they refer to the tuba that curves downward and the many dentitions in the aperture.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
19803BBA1E9352D1AC6D8935AF7197A3.taxon	type_taxon	Type species. Acinolaemus ptychochilus Thompson & Upatham, 1997, by original designation.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
9BD9F1E462F757E8ADBFCA71858C7F37.taxon	type_taxon	Type species. Clostophis sankeyi Benson, 1860, by monotypy.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
523EAF63BD275CC3823F0ECAC475A586.taxon	description	Figs 3, 4, 5, Table 3	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
523EAF63BD275CC3823F0ECAC475A586.taxon	diagnosis	Diagnosis. Shell concave-conical and with long and descending tuba. Apertural dentition with one parietal lamella and one weak palatal plica. Umbilicus wide.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
523EAF63BD275CC3823F0ECAC475A586.taxon	description	Description. Shell concave-conical, colourless; growing regularly; last whorl slightly expanded. Shell height 1.7 – 1.9 mm (including tuba) and shell width 1.6 – 1.7 mm. Apex large and rounded; protoconch ~ 1 ½ whorls, pitted and with very narrow spiral striae. Whorls ~ 4 ½ – 5 (excluding tuba), rounded and convex; suture wide and deep. Shell surface with strong, elevated and rather equidistant spiral striae (18 – 22 on body whorl in frontal view), and crossed with weak to strong and irregular radial growth lines. Sometimes growth lines on earlier whorls strong, thus making reticulated surface. Penultimate whorl seemingly sunken into last whorl. Last whorl slightly shouldered to rounded; tuba long, ~ ¼ whorl, strongly descending, curving and slightly twisted. Aperture subovate, open ventrally to subventrally; peristome thin, slightly expanded and with weak depression on parietal side. Apertural dentitions two: parietal lamella relatively strong, high, and situated near apertural lip; palatal plica moderate, low, and situated slightly deeper inside aperture (infrapalatal plica occasionally present). Umbilicus widely opened, occupies ~ ½ of shell width and showing all preceding whorls.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
523EAF63BD275CC3823F0ECAC475A586.taxon	distribution	Distribution. This species is currently known from several limestone outcrops in central Thailand.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
FC546542DCD653CB948CEC093483CA20.taxon	description	Figs 6, 7, Table 3	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
FC546542DCD653CB948CEC093483CA20.taxon	diagnosis	Diagnosis. Shell depressed concave-conical, penultimate whorl slightly sunken into last whorl, long and descending tuba, 12 – 14 spiral striations, peristome weakly expanded, with only parietal lamella, and wide umbilicus.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
FC546542DCD653CB948CEC093483CA20.taxon	description	Description. Shell depressed, concave-conical, colourless; spire growing regularly and last whorl broadly expanded. Shell height 1.3 – 1.4 mm (including tuba) and shell width 1.4 – 1.5 mm. Apex large and rounded; protoconch ~ 2 whorls, pitted and sculptured with prominent spiral striae. Whorls ~ 4 – 4 ¾ (excluding tuba) weakly shouldered and convex; suture wide and deep. Shell surface with strong, elevated, continuous, equidistant spiral striae (12 – 14 on body whorl in frontal view), and crossed with weaker and irregular radial growth lines. Growth lines on earlier whorls rather strong, making reticulated surface. Penultimate whorl slightly sunken into last whorl. Last whorl with slight indication of blunt shoulder; tuba short, <¼ whorl, strongly descending and twisted. Aperture subovate, open ventrally to subventrally; peristome thin and slightly expanded on columellar side and with weak depression on parietal side. Apertural dentition one: parietal lamella strong and tall with low ridge near peristome edge then gradually taller deep inside aperture. Umbilicus widely opened, occupies ~ ½ of shell width and showing all preceding whorls.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
FC546542DCD653CB948CEC093483CA20.taxon	distribution	Distribution. This new species is currently known only from the type locality. There is a small limestone outcrop (700 m long and 250 m wide), and a hill covered with low vegetation, surrounded by a housing area and temple, and with low disturbance.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
FC546542DCD653CB948CEC093483CA20.taxon	etymology	Etymology. The specific name rhynchotes is from the Greek word rhynchos meaning ‘ snout’ and the suffix – otes; it refers to the tuba of the last whorl, which resembles the snout of a tapir.	en	Tongkerd, Piyoros, Janjai, Teerangkul, Pholyotha, Arthit, Gojšina, Vukašin, Panha, Somsak, Sutcharit, Chirasak (2025): The microsnail genera Clostophis and Acinolaemus (Eupulmonata, Pupilloidea, Hypselostomatidae) from central Thailand, with description of three new species. ZooKeys 1258: 35-71, DOI: 10.3897/zookeys.1258.162797
