Pupopsis retrodens Martens 1879
Creators: name: Wu, Min
name: Gao, Linhui
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Stylommatophora
Enidae
Pupopsis
Pupopsis retrodens

description: 5. Pupopsis retrodens (Martens, 1879)
Figs. 1, 3 B, 4F–4G, 5B, 7; Tables 2, 3
Buliminus retrodens Martens, 1879: 126.
Buliminus retrodens— Martens, 1881: 30, pl. 6, figs. 15-18. Buliminus retrodens — Martens1882: 26, pl. 3, figs. 10, 11.
Buliminus (Chondrula) retrodens —Kobelt, 1889: 44, pl. 101, fig. 587. Buliminus (Chondrulopsis) retrodens —Kobelt, 1902: 514, pl. 82, figs. 19–20. Pupopsis retrodens— Yen, 1939: 90, pl. 8, fig. 42.
Type material. Lectotype: ZMB Moll.-34878a; 15 paralectotypes: ZMB Moll.-34878b (Kilias 1971: 230); not examined.
Type locality. Near the Ili river and at Kuldscha (= Gulja in new spelling), Xinjiang.
Material examined. HBUMM-06460: 6 fma, 7 fms, 1 juvenile with animal; Gulja, 44°0ʹ N, 81°36ʹE, Xinjiang, 2006–VIII–14, leg. A. Kanatbaytegi. HBUMM-05208: 18 fms, Gulja Forestry Centre, 1736 m a.s.l., 44°09ʹ23.1ʹ N, 81°44ʹ18.0ʹ E, Gulja, Xinjiang, 2002–VI–26, leg. A. Kanatbaytegi. HBUMM-04345: 5 fms with dried animals, 1 juvenile with animal, Qapqal Xibe Zizhixian, 43°48ʹN, 81°6ʹE, Xinjiang, 2005–IV–20, leg. A. Kanatbaytegi. HBUMM-05868: 5 fms, Guozigou, Gulja, 44°0ʹN, 81°36ʹE, Xinjiang, 2002–VI, leg. A. Kanatbaytegi. HBUMM-04542: 2 fma, Ji'ergelang Village, 44°00ʹ24.5ʹ N, 81°31ʹ12.6ʹ E, Gulja, Xinjiang, 2002– V–25, leg. A. Kanatbaytegi.
Distribution. Xinjiang.
Diagnosis. Shell with 6.375–7.500 whorls. Height 8.5–11.1, diam. maj. 3.7–5.0. Parietal tooth present. Columella with one blunt tooth. Palatal ridge-like tooth indistinct, very obtuse. Epiphallus straight. Flagellum indistinct. Penial caecum absent. Penis distally with one V-shaped pilaster. A-2 near A-3 internally with a ring of papillae. A-3 opening into A-2 by a long needle–like papilla. Bursa copulatrix duct proximally straight. Diverticle present.
Re-description of shell. Elongate-ovate; apex not acuminate; dextral; thin-shelled; solid; semitranslucent; glossy; with 6.375–6.899–7.500 whorls. Whorls with fine spiral grooves; convex. Embryonic shell smooth; polished; with 1.500–1.711–1.875 whorls. Postnuclear whorls wrinkled. Suture simple. Last whorl almost straight in front; rounded at periphery. Shell 8.5–10.0–11.1 high; 3.7–4.4–5.0 in diam. maj. Height/diam. maj. ratio 2.05– 2.27–2.55. Aperture ear-shaped; vertical; its insertions separated; 3.1–3.7–4.3 high, 2.4–2.8–3.3 wide. Ratio of shell height to aperture height 2.37–2.67–2.93. Palatal margin rounded. Peristome slightly expanded; sharp. Parietal callus indistinct; with angular tubercle. Parietal tooth present. Palatal wall with an indistinct and obtuse, ridge-like tooth. Columellar margin reflexed; with one blunt tooth. Umbilicus narrowly open. Shell, including upper whorls, uniformly corneous-brown; aperture of the same colour.
Genitalia. Vas deferens long; of even thickness; entering epiphallus apically at some angle. Epiphallus moderately long; cylindrical and uniformly thick; straight. Epiphallic caecum apically blunt. Flagellum indistinct (Fig. 7, arrow). Penis evenly thick; without penial caecum; with terminal entrance of epiphallus; thin-walled. Pilasters fused at epiphallic pore. With one V-shaped pilaster; without papilla developed by fused distal pilasters forming V-shaped structure. V-shaped pilaster with proximal free end approaching at penial retractor insertion. Penial verge absent. Penial appendix short; branched off from proximal portion of penis; divided into sections A- 1+A-2, A-3 and A-4+A-5. A-1 long; without verge toward penial chamber. A-1 and A-2 fused; internally with longitudinal pilasters. A-2 near A-3 internally with a ring of papillae. A-2 and A-3 not fused. A-3 opening into A-2 by needle–like long papilla. Boundary between A-4 and A-5 indistinct. A-5 short; straight. Free oviduct moderately long; subequal to vagina in length. Vagina moderately long; not swollen; straight. Bursa copulatrix duct moderately long; proximally straight. Bursa copulatrix well defined. Diverticle present; longer than reservoir; unexpanded. Bursa copulatrix and diverticle distinguishable; diverticle diverging from bursa duct closer to reservoir than to duct’s proximal end.
Measurement of genitalia. P: 4; Ep: 9.4; VD: 12.6; Va: 2.1; FO: 2.3; BCD: 6.7; BC: 1.7; D: 4.7; A-1+A-2: 3.6; A-3: 1.0; A-4+A-5: 7.6 (HBUMM-06460–specimen 1).
Remarks. Notably, the flagellum is indistinct or missing in all anatomically known enid species distributed in Xinjiang. In addition to P. re t ro d e n s, the species with this feature are Pupopsis yengiawat sp. nov. (see below) and Subzebrinus labiellus (Martens, 1881), which is widely distributed in SE Kasakhstan and neighbouring Xinjiang, China (Schileyko 1998; Wu unpublished).
description: Published as part of 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, pp. 1-27 in Zootaxa 2725 on pages 11-13, DOI: 10.5281/zenodo.199982