taxonID	type	description	language	source
84B85F31356D591BACF8567B5C2A734A.taxon	type_taxon	Type species. Trichotropis (Provanna) lomana Dall, 1918; Magdalena Bay, USA, Recent.	en	Wu, Cong, Chen, Fang, Tian, Ying, Amano, Kazutaka, Su, Xin (2025): A new species of genus Provanna (Gastropoda, Abyssochrysoidea) from gas hydrate-bearing sediments of the northern South China Sea. Zoosystematics and Evolution 101 (1): 45-54, DOI: 10.3897/zse.101.137176
E4BE6EC5559A587C95ABA8418026A106.taxon	description	Fig. 2 A – O	en	Wu, Cong, Chen, Fang, Tian, Ying, Amano, Kazutaka, Su, Xin (2025): A new species of genus Provanna (Gastropoda, Abyssochrysoidea) from gas hydrate-bearing sediments of the northern South China Sea. Zoosystematics and Evolution 101 (1): 45-54, DOI: 10.3897/zse.101.137176
E4BE6EC5559A587C95ABA8418026A106.taxon	etymology	Etymology. This new species is the only appearance of genus Provanna in SCS to date. We use the specific epithet “ dongsha ” to present the place where it is discovered.	en	Wu, Cong, Chen, Fang, Tian, Ying, Amano, Kazutaka, Su, Xin (2025): A new species of genus Provanna (Gastropoda, Abyssochrysoidea) from gas hydrate-bearing sediments of the northern South China Sea. Zoosystematics and Evolution 101 (1): 45-54, DOI: 10.3897/zse.101.137176
E4BE6EC5559A587C95ABA8418026A106.taxon	description	Dimensions. Holotype is approximately 7.80 mm in height and 5.02 mm in width of the whole whorl, 3.66 mm in apertural height and up to 0.58 mm thick at the apertural wall. Apical angle of approximately 54 ° reaching at least 3.66 mm in height and 3.02 mm in width.	en	Wu, Cong, Chen, Fang, Tian, Ying, Amano, Kazutaka, Su, Xin (2025): A new species of genus Provanna (Gastropoda, Abyssochrysoidea) from gas hydrate-bearing sediments of the northern South China Sea. Zoosystematics and Evolution 101 (1): 45-54, DOI: 10.3897/zse.101.137176
E4BE6EC5559A587C95ABA8418026A106.taxon	diagnosis	Diagnosis. A medium-sized Provanna, sturdy, shell with prominent, angular whorls with nodes at intersection of the axial and spiral ribs.	en	Wu, Cong, Chen, Fang, Tian, Ying, Amano, Kazutaka, Su, Xin (2025): A new species of genus Provanna (Gastropoda, Abyssochrysoidea) from gas hydrate-bearing sediments of the northern South China Sea. Zoosystematics and Evolution 101 (1): 45-54, DOI: 10.3897/zse.101.137176
E4BE6EC5559A587C95ABA8418026A106.taxon	description	Description. Protoconch: at least one whorl, but poor preservation in all specimens; maximum diameter about 0.58 mm (Fig. 2 C); sculptured pattern not clear; transition to teleoconch unknown. Teleoconch: shell height 7.8 to more than 10 mm. Diameter of the last whorl 5.02 to 7.13 mm. Shell thick, 0.41 to 0.58 mm in the thickness of last whorl. Shell four to five whorls, sculptured by reticulate pattern. 15 to 16 strongly orthocline axial ribs (Fig. 2 C, H, L) on both the penultimate and last whorls. Three prominent and equally strong spiral ribs with blunt, strong and swollen tubercles at intersections on the penultimate whorl, and up to 7 on the last whorl. Tubercles more prominent on lower whorls, like strings of pearls. Basal margin marked by the distinct with strength-decreasing spiral rib. Axial ribs start at the upper suture and fade below the lower spiral rib. Regularly and closely spaced, fine spiral treads on whorl flank, fine axial growth increments. Aperture broadly oval, siphonal canal bordered by low ridge.	en	Wu, Cong, Chen, Fang, Tian, Ying, Amano, Kazutaka, Su, Xin (2025): A new species of genus Provanna (Gastropoda, Abyssochrysoidea) from gas hydrate-bearing sediments of the northern South China Sea. Zoosystematics and Evolution 101 (1): 45-54, DOI: 10.3897/zse.101.137176
