Jullienia quan Xiang, He, Lv & Chen, 2025

Xiang, Hong Quan, Lu, Yi Zhi, He, Yue Ming, Li, Chong Ye, Gao, Han, Lv, Ang Song & Chen, Hui, 2025, Twenty-seven new species and four new genera of Gastropoda (Animalia: Mollusca) from plateau lake Quaternary sediments in Yunnan, southwestern China, Ecologica Montenegrina 84, pp. 48-71 : 60-61

Jullienia quan Xiang, He, Lv & Chen , sp. nov.

https://zoobank.org/ urn:lsid:zoobank.org:act:D9775CB5-3CCB-4FEB-932C-AB47DF0BF815

Fig. 2 P , Fig. 6 A-C

Material examined. Holotype: XHQ 24011601, shell height 16.0 mm. Zhongshu Town , Luliang County, Qujing City, Yunnan Province, China, 25.02°N, 103.66°E, June 2022, collected by Yue-Ming He and Hong-Quan Xiang ( Fig. 1 ).

Paratypes: 2 specimens, XHQ 24011602-03, shell height 13.5-14.0 mm, June 2022, locality and habitat same as holotype.

Diagnosis. Shell small, ovate-conic, white, with five whorls, shell surface with many keels, body whorl big and swollen, aperture ovate, outer lip thined.

Description. Shell small, but solid, ovate-conic, white, with five spiral whorls, including two protoconch whorls, teleoconch whorl inflated; third spiral whorls with two keels; other whorls with a four keels, body whorl big and swollen. Apex obtuse. Umbilicus narrow, base white and with two keels around umbilical area. Aperture ovate, more than half of shell in height, inner lip thickened and smooth, outer lip thined.

Differential diagnosis. Compared to Jullienia carinata (Fulton, 1904) and Jullienia harmandi (Poirier, 1881) , Jullienia quan sp. nov. has a larger shell and two keels on the spiral whorls. Compared to Jullienia munensis (Brandt, 1974) , Jullienia acuta (Poirier, 1881) , Jullienia rolfbrandti (Temcharoen, 1971) and Jullienia flava (Deshayes, 1876) , Jullienia quan sp. nov. teleoconch whorl swollen and umbilicus with two keels around umbilical area.

Etymology. The species name "quan " originates from the shape of a fist. We suggest the Chinese common name as " edz氏Dz ".

Distribution and ecology. This species is only found in the lake sediments of Lake Lulianghai in Qujing, Yunnan Province.

Figures

Figure 1. Map of the ancient lakes and rivers in the Yunnan Province, south-west China, showing the sampling sites.

Figure 2. (A) paratype, Paraprososthenia bronyaae sp. nov. (B) holotype, P. bicarinata sp. nov. (C) holotype, P. jinxi sp. nov. (D) holotype, P. geguoi sp. nov. (E) holotype, P. yunjian sp. nov. (F) holotype, P. yuanqin sp. nov. (G) holotype, Shuiyu rillionaae gen. et sp. nov. (H) holotype, S. multicostata gen. et sp. nov. (I) holotype, S. shiji gen. et sp. nov. (J) holotype, S. boyuwangi gen. et sp. nov. (K) holotype, S. xuchengweii gen. et sp. nov. (L) holotype, S. phoebe gen. et sp. nov. (M) holotype, S. quanyuzhangi gen. et sp. nov. (N) holotype, S. candida gen. et sp. nov. (O) holotype, Qilinia longfeicheni gen. et sp. nov. (P) holotype, Jullienia quan sp. nov. (Q) holotype, J. chengyuangongi sp. nov. (R) holotype, Fenouilia zihaozhaoi sp. nov. (S) holotype, F. yizhou sp. nov. (T) holotype, F. pluvia sp. nov. (U) holotype, F. gaorange sp. nov. (V) holotype, Lacunopsis chengjiang sp. nov. (W) holotype, L. luliangensis sp. nov. (X) holotype, Longhai zhongxian gen. et sp. nov. (Y) holotype, Gyraulus fuxianensis sp. nov. (Z) holotype, Xingyuan jiamingzhangi gen. et sp. nov. (ZA) holotype, X. zhihehongi gen. et sp. nov. Scale bars = 10 mm.

Figure 6. Shells of Jullienia quan sp. nov. (A) holotype (B-C) paratype. Shells of J. chengyuangongi sp. nov. (D) holotype (E-F) paratype. Scale bars = 10 mm.