taxonID	type	description	language	source
A8AF4EA3FAE955F7BF5CEDAC0A3D1037.taxon	materials_examined	Materials examined. Holotype: China • Guangxi Province, Hechi City, Yizhou District, Longjiang River; 24.4927 ° N, 108.6851 ° E; August 2022; Xu Cheng Wei & Yue Ming He leg.; NNU 230701 (Fig. 2 A-D), shell height 3.39 mm. Paratypes: China • 2 specimens; same locality data as holotype; August 2022; NNU 230702 - 03 • _ 2 _ specimens; same locality data as holotype; March 2023; NNU 230704 - 05. Shell height of all paratypes: 3.04 - 3.44 mm (Fig. 2 E-P, Table 2).	en	Chen, Hui, He, Yue Ming, Wang, Chong Rui, Pan, Da (2024): A new species of freshwater snail of Fenouilia (Gastropoda, Pomatiopsidae) from northern Guangxi, China, based on morphological and DNA evidence. ZooKeys 1196: 271-283, DOI: http://dx.doi.org/10.3897/zookeys.1196.113856, URL: http://dx.doi.org/10.3897/zookeys.1196.113856
A8AF4EA3FAE955F7BF5CEDAC0A3D1037.taxon	diagnosis	Diagnosis. Shell small, thin but solid, with rounded, rather flattened shape, and width greater than height; sculptured with low, rounded axial ribs and fine spiral striae; whorls 4 - 5; body whorl swollen and large. Suture shallow; umbilicus narrow, crescent-shaped or closed. Aperture large, its length greater than shell height. Operculum ovate, corneous, slightly transparent, yellowish.	en	Chen, Hui, He, Yue Ming, Wang, Chong Rui, Pan, Da (2024): A new species of freshwater snail of Fenouilia (Gastropoda, Pomatiopsidae) from northern Guangxi, China, based on morphological and DNA evidence. ZooKeys 1196: 271-283, DOI: http://dx.doi.org/10.3897/zookeys.1196.113856, URL: http://dx.doi.org/10.3897/zookeys.1196.113856
A8AF4EA3FAE955F7BF5CEDAC0A3D1037.taxon	description	Description. Shell small, 3.04 - 3.44 mm high, thin but solid, with a rounded, rather flattened shape; whorls 4 - 5; body whorl swollen and large, taking up most (about 84 - 94 %) of shell; whorls of spire rapidly expanding. Shell width longer than shell height (Fig. 2). Apex obtuse, usually eroded. Suture low. Shell amber-yellow, with low, prosocline, rounded axial ribs and fine spiral striae. Aperture round, large, broader than shell height. Lip slightly thickened; inner lip smooth, white; outer lip white or yellowish and slightly rolled outward. Umbilicus narrowly crescent-shaped or closed; base white (Fig. 2 A-N). Operculum ovate, smaller than aperture, corneous, thin, slightly transparent, yellowish, length 1.86 - 2.12 mm, width 1.53 - 1.72 mm; surface, including nucleus, of operculum smooth; nucleus located at bottom left third (Fig. 2 O, P). Radula small; ribbon approximately 0.88 mm long. Central tooth with one large, triangular, pointed major cusp without serrations, with two small, sharp cusps on either side at base. Inner side of lateral teeth with two or three faint, wavy ridges; outer side smooth. Inner marginal teeth with five or six small cusps. Outer marginal teeth with 6 - 8 small cusps (Fig. 3). Tentacles short, white; snout stubby, white, black pigmented. Mantle smooth, light gray, with small black spots. Intestine wider than base of tentacle; digestive gland milky white. Penis translucent white, thin, coiled, located behind right tentacle in neck area (Fig. 4).	en	Chen, Hui, He, Yue Ming, Wang, Chong Rui, Pan, Da (2024): A new species of freshwater snail of Fenouilia (Gastropoda, Pomatiopsidae) from northern Guangxi, China, based on morphological and DNA evidence. ZooKeys 1196: 271-283, DOI: http://dx.doi.org/10.3897/zookeys.1196.113856, URL: http://dx.doi.org/10.3897/zookeys.1196.113856
A8AF4EA3FAE955F7BF5CEDAC0A3D1037.taxon	biology_ecology	Biology. In the laboratory aquarium, the new species fed on algae present on the surface of stones or watergrass. Snails reproduced many times during their year in captivity. Each brownish egg was laid 1.5 mm from the next. Eggs were affixed to the surfaces of rocks with a secretion. In some months, some individuals were observed to occasionally perform a " dance " in which they repeatedly twisted their shells clockwise or counterclockwise. They were more active at night.	en	Chen, Hui, He, Yue Ming, Wang, Chong Rui, Pan, Da (2024): A new species of freshwater snail of Fenouilia (Gastropoda, Pomatiopsidae) from northern Guangxi, China, based on morphological and DNA evidence. ZooKeys 1196: 271-283, DOI: http://dx.doi.org/10.3897/zookeys.1196.113856, URL: http://dx.doi.org/10.3897/zookeys.1196.113856
A8AF4EA3FAE955F7BF5CEDAC0A3D1037.taxon	etymology	Etymology. From the Latin adjective undata (wavy or wave-like form). We suggest the Chinese common name 波浪龙骨螺.	en	Chen, Hui, He, Yue Ming, Wang, Chong Rui, Pan, Da (2024): A new species of freshwater snail of Fenouilia (Gastropoda, Pomatiopsidae) from northern Guangxi, China, based on morphological and DNA evidence. ZooKeys 1196: 271-283, DOI: http://dx.doi.org/10.3897/zookeys.1196.113856, URL: http://dx.doi.org/10.3897/zookeys.1196.113856
