Pupopsis rhodostoma, Wu, Min & Gao, Linhui, 2010

Wu, Min & Gao, Linhui, 2010, A review of the genus Pupopsis Gredler, 1898 (Gastropoda: Stylommatophora: Enidae), with the descriptions of eight new species from China, Zootaxa 2725, pp. 1-27 : 17-18

9. Pupopsis rhodostoma sp. nov.

Figs. 1 , 3 G, 8F–8G; Table 2

Type material. Holotype: HBUMM-05872–specimen 2 (fms), mountain about 30 km south of Narat, 2212 m a.s.l., 43°11ʹ47.7ʹ N, 84°20ʹ48.8ʹ E, Xinyuan County, Xinjiang, China, 2002–VI–5, leg. A. Kanatbaytegi. Paratype: HBUMM-05872–specimen 1 (fms), collection data as same as for holotype.

Type locality. mountain about 30 km south of Narat, Xinyuan County, Xinjiang.

Material examined. Type material.

Distribution. Xinjiang (only known from the type locality).

Etymology. The name of the new species is derived from “rhodo,” meaning reddish, and “stoma,” meaning aperture. The epithet is to be treated as a latin adjective, feminine in gender combined with Pupopsis .

Diagnosis. Shell with 5.750–6.125 whorls. Height 7.4–8.0, diam. maj. 3.7–3.9. Parietal tooth weakly developed. Columella with one blunt tooth, not expanded inward. Palatal tooth absent.

Shell. Ovate; apex not acuminate; dextral; thick-shelled; solid; opaque; glossy; with 5.750–5.938–6.125 whorls. Whorls never spirally grooved; convex. Embryonic shell smooth; not polished; with 1.625–1.625–1.625 whorls. Postnuclear whorls wrinkled. Suture simple. Last whorl gradually ascending toward aperture; rounded at periphery. Shell 7.4–7.7–8.0 high; 3.7–3.8– 3.9 in diam. maj. Height/diam. maj. ratio 2.02–2.04–2.05. Aperture subcircular; slightly oblique; its insertions separated; 2.8–2.9–3.0 high, 2.6–2.7–2.8 wide. Ratio of shell height to aperture height 2.65–2.65–2.65. Peristome slightly expanded; more or less thickened. Palatal margin rounded. Palatal tooth absent. Parietal callus indistinct; without angular tubercle. Parietal tooth weakly developed. Columellar margin reflexed; with one blunt tooth which is not expanded inwards. Umbilicus narrowly open. Shell, including upper whorls, uniformly reddish-brown; aperture reddish-white.

Remarks. The new species is closest to Pupopsis subtorquilla sp. nov. found in Gansu, but differs from the latter species in the much weaker parietal tooth, the absence of a palatal tooth, a very simple columellar tooth which is not expanded inward, distinctly fewer whorls and a much slenderer shell.

Figures

FIGURE 1. Distribution map of the genus Pupopsis. Red dot, Pupopsis dissociabilis (Sturany, 1900); blue dot, P. retrodens (Martens, 1879); blue square, P. maoxian sp. nov.; red square, P. rhodostoma sp. nov.; green dot, P. subpupopsis sp. nov.; green square, P. yengiawat sp. nov. Two grey dots each with two or five species as indicated in the boxes on the map. The species P. paraplesius (Sturany, 1900), P. polystreptus (Sturany, 1900) and P. zilchi sp. nov. are not mapped due to no precise locality information available.

FIGURE 3. Apertural view of Pupopsis species. A, Pupopsis pupopsis (Gredler, 1898), SMF- 42076; B, Pupopsis retrodens (Martens, 1879), HBUMM- 06460 – specimen 1; C-D, Pupopsis torquilla (Möllendorff, 1901). C, lectotype, SMF- 42082; D, HBUMM- 05584 – specimen 1; E, Pupopsis hendan sp. nov., holotype, HBUMM- 05592 – specimen 2; F, Pupopsis maoxian sp. nov., holotype, HBUMM- 01023 – specimen 1; G, Pupopsis rhodostoma sp. nov., holotype, HBUMM- 05872 – specimen 2; H, Pupopsis subpupopsis sp. nov., holotype, HBUMM- 05676 – specimen 1; I, Pupopsis subtorquilla sp. nov. A, holotype, HBUMM- 05429 – specimen 2; J, Pupopsis yengiawat sp. nov., holotype, HBUMM- 04439 – specimen 1; K, Pupopsis yuxu sp. nov., Holotype, HBUMM- 06089 – specimen 3; L, Pupopsis zilchi sp. nov., holotype, SMF- 334777.