syn_novataxa: [Gastropoda • 2024] Fenouilia undata • A New Species of Freshwater Snail of Fenouilia (Gastropoda: Pomatiopsidae) from northern Guangxi, China, based on morphological and DNA evidence

[Gastropoda • 2024] Fenouilia undata • A New Species of Freshwater Snail of Fenouilia (Gastropoda: Pomatiopsidae) from northern Guangxi, China, based on morphological and DNA evidence

Fenouilia undata Chen & He,

in Chen, He, Wang et Pan, 2024.

波浪龙骨螺 || DOI: 10.3897/zookeys.1196.113856

Abstract

A new species of pomatiopsid freshwater snail, Fenouilia undata Chen & He, sp. nov., is described from Guangxi, China, based on morphological and molecular evidence. The new species can be distinguished from its congeners by the following combination of characters: shell with low, prosocline, rounded axial ribs and fine spiral striae, broader than high; aperture broader than shell height; radula with lateral teeth have only two or three faint, wavy ridges on inner side. A molecular analysis of partial mitochondrial COI and 16S DNA sequences supports the systematic position of the new taxon.

Key words: Diversity, southern China, taxonomy, Triculinae

Fenouilia undata sp. nov. shells and operculum
A–D holotype, NNU230701 E–H paratype, NNU230702 I–L paratype, NNU230703 M paratype, NNU230704 N paratype, NNU230705 O, P operculum, holotype, NNU230701.

Scale bars: 2 mm (A–N); 1 mm (O–P).

Fenouilia undata sp. nov. A color in life B natural habitat.

Photographs by Xu Cheng Wei and Yue Ming He.

Family Pomatiopsidae Stimpson, 1865

Subfamily Pomatiopsinae Stimpson, 1865

Genus Fenouilia Heude, 1889

 Fenouilia undata Chen & He, sp. nov.

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.

Etymology: From the Latin adjective undata (wavy or wave-like form). We suggest the Chinese common name 波浪龙骨螺.

Hui Chen, Yue Ming He, Chong Rui Wang and Da Pan. 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: 10.3897/zookeys.1196.113856