Serina belae (Hilber, 1883)

Wu, Min & Xu, Qin, 2013, Serina Gredler (Gastropoda, Stylommatophora: Enidae), the continuous-peristomed mountain snails endemic to the eastern slope of the Qinghai-Xizang Plateau, Zootaxa 3620 (1), pp. 43-66 : 46

1. Serina belae (Hilber, 1883)

Figs. 1 , 2A ; Tables 1 , 3

Buliminus ( Zebrina ?) Belae Hilber, 1883 : 1367, pl. 5, figs. 11, 12. Buliminus (Clausiliopsis) belae— Möllendorff, 1901: 370.

Buliminus (?) belae— Kobelt, 1902: 552, pl. 86, figs. 20–23.

Serina belae— Yen, 1939: 87, pl. 8, fig. 19. Chen, Zhou, Luo & Zhang, 2003: 442.

Type locality. Bangda (SE Xizang Autonomous Region).

Material examined. SMF-42069: 1 paratype. Panto (=Ben-to, new spelling is Bangda, 29°24ʹN, 98°42ʹE, neighbouring to N Yunan and now of Xizang Autonomous Region), Yunnan, China. Hng. Nat. Mus. G. (just labeled on SMF-42069).

Distribution. SE Xizang Autonomous Region.

Diagnosis. Shell cylindrical-conic, with the most swollen part occurred at penultimate whorl and body whorl. Suture simple. Last whorl ascending immediately near aperture; straight at periphery. Aperture not duplicate; completely attached to body whorl. Columella with two teeth.

Shell. Cylindrical-conic; dextral; with apex not abruptly pointed; with the most swollen part occurred at penultimate whorl or body whorl; height 12.4, diameter major 3.9, ratio of shell height /diameter major 3.17. Growth lines usually not very clear. Whorls 9 5/8, slightly convex. Embryonic shell 1 5/8 whorls. Postnuclear whorls smooth. Suture simple. Last whorl ascending immediately near aperture; more or less straight at periphery; with a rugate region with abapertural crowded and/or thickened growthline-like folds. Aperture not duplicate; wavy; ovate; quite oblique; completely attached to body whorl; height 3.3, width 2.8, ratio of shell height /apertural height 3.71. Peristome and parietal callus almost completely fusing except for a channel at upper insertion of peristome. Reflexed part of peristome straight and not curved backward. Abapertural peripheral depression on body whorl spirally extending for ca. 1 whorl. Columella with 2 teeth. Columellar margin reflexed. Columella oblique. Umbilicus widely open. Apex yellowish brown; subsequent whorls whitish. Aperture white. Measured specimen:SMF-42069: 1 shell.

Figures

FIGURE 1. Distribution of Serina species. S. soluta inflata Yen, 1939 is also indicated although synonymized in this paper. S. soluta stenochila (Möllendorff, 1901) is not mapped due to imprecise locality information.

FIGURE 2. A. Serina belae (Hilber, 1883), SMF- 42069, paratype, Bangda. B, C. Serina cathaica Gredler, 1898: B. SMF- 42046, between Yue-lin-kuan and Wen-hsien. C. NHM- 1902.5.13.19. D. Clausiliopsis szechenyi (Böttger, 1883), syntype of B. sobrina Preston, NHM- 1912.3.26.9, Gansu. E – J. Serina egressa Sturany, 1900. E. NHM- 1902.5.13.21, Gansu. F. HBUMM- 05426 – specimen 21, Wenxian. G. HBUMM- 05426 – specimen 23, Wenxian. H. SMF- 42038 (from type locality, between Yuelin-kuan and Wen-hsien). I. HBUMM- 5673 – specimen 22, Lianghekou. J. HBUMM- 5673 – specimen 23, Lianghekou. K – O. Serina prostoma (Ancey, 1884). K. NHM- 1912.6.27.69 – 71. L. A paratype of Buliminus (Holcauchen) tubios Annandale, 1924, NHM- 1923.5.24.17 – 36, Gorge of Mekong above Yangtze. M. SMF- 42050, paratype, Dshy-kow. N. HBUMM- 04296 – specimen 25, Yanjing. O. HBUMM- 04296 – specimen 24, Yanjing.