Pupinidius pupinella altispirus ( Moellendorff, 1901 )

Wu, Min & Zheng, Wei, 2009, A review of Chinese Pupinidius Moellendorff (Gastropoda, Stylommatophora: Enidae), with the description of a new species, Zootaxa 2053, pp. 1-31 : 19-20

14. Pupinidius pupinella altispirus ( Moellendorff, 1901)

Figs 1 , 6 D–H, 8G, 15

Buliminus (Pupinidius) pupinella altispirus Moellendorff, 1901: 344 , pl. 14, figs 4, 5; Kobelt, 1902: 848. Pupinidius pupinella altispirus Yen, 1939: 84 , pl. 7, fig. 50.

Material examined. HBUMM-05723 (20 shell measured, 3 with broken apex; specimen-1 for dissection; 1 young): 1661 m a.s.l., 34°0΄127.6΄ N, 104°25΄16.4΄ E, Dangchang, Gansu, loessial area, 2006-X-4, coll. J.Liu & W.Zheng; ZI RAS-N602: type material, det. Moellendorff, 1885-VI-19, coll.? Potanin. SMF-41990: Lectotype. Tan-tshang, Kansu, China. Slg. O.v.Moellendorff. SMF-41991: Paratypes. 3 fmss. Tan-tshang (Dangchang of new spelling), Kansu, China. Slg. O.v.Moellendorff (measurement of types: ewh 1.500–1.656–1.750, wh 6.375–6.500–6.625, h 15.4–16.8–17.9, diam. maj. 11.4–11.8–12.0, aph 8.7–9.3–9.7, apw 7.2–7.8–8.6, h/diam. maj. 1.35–1.40–1.49, h/aph 1.68–1.77–1.87).

Distribution. Gansu (type locality, between Li-dshia-pu and His-gu-tsheng, between Li-dshia-pu and Guan-ting).

Type locality. Dangchang.

Diagnosis. Shell bandless; not or faintly striate. Aperture more or less distinctly with angular tubercle. Most swollen part at penultimate and body whorls. With 6.375–7.000 whorls; height 15.4–18.7, diam. maj. 11.4–14.0. Penis without penial caecum; internally with more than 2 fine longitudinal pilasters. Papilla developed by fused proximal pilasters forming V-shaped structure absent. Epiphallus forming a few loops. Epiphallic caecum absent.

Re-description of shell. Ovate; apex protruded. Most swollen part at penultimate and body whorls. Shell dextral; thin; solid; opaque; glossy; not speckled; with spiral grooves (only at umbilical region); with 6.375–6.588–7.000 whorls. Whorls not shouldered; flattened. Growth lines usually not very clear. Embryonic shell smooth; polished; with 1.375–1.529–1.750 whorls. Postnuclear whorls smooth. Suture normal, without narrow defined zone on beneath whorl. Last whorl gradually ascending towards aperture; rounded at periphery; without smoothed spiral peripheral depression nor rugate region. Shell 16.4–17.5–18.7 high; 12.0–12.7–14.0 in diam. maj. Height/width ratio 1.30–1.38–1.48. Aperture in a plane; completely attached to body whorl; subcircular or truncate-ovate; not adnate; oblique; not armed; more or less distictly with angular tubercle; 9.0–10.0–10.9 high; 7.2–8.4–9.3 wide. Ratio of shell height to aperture height 1.60–1.75–1.92. Peristome reflexed, without distinct cuff; expanded; sharp. Parietal callus indistinct. Columellar margin reflexed. Columella vertical or slightly arched. Outer edge of columellar lip vertical. Umbilicus very narrowly open. Apical whorls normally coloured to differently tinted. Shell multicoloured; and umbilical region. in light greyish brown. From about the third or the fourth whorl on, with a broad whitish spiral band which occupies nearly the whole whorl. Aperture white.

Genitalia. Vas deferens long; of even thickness; entering epiphallus apically with distinct demarcation. Epiphallus long; cylindrical; of uniform thickness; forming a few loops; externally smooth; without caecum. Flagellum short; tubular; proximally normal; with tip blunt. Penis with terminal entrance of epiphallus; clavate; evenly thick; without penial caecum; thin-walled; internally with more than 2 fine longitudinal pilasters; with 1 V-shaped pilaster. V-shaped pilaster with proximal free end approaching at penial retractor insertion; distally not developing into a papilla. Penial process nipple-shaped; situated at boundary between epiphallus and penis. Penial verge absent. Penial appendix long; branched off from penis at some distance from atrium; divided into sections sections including A-1+A-2, A-3 and A-4+A-5. A-1 and A-2 fused; interiorly with more than 2 fine longitudinal pilasters. A-2 near A-3 internally without a ring of papilla. A-2 and A-3 not fused. A-3 opening into A-2 by no papilla. Boundary between A-4 and A-5 indistinct. A-5 long; convoluted. Penial retractor biramous; attaching to penis distally and to A-1+ A-2; with penial retractor arms arising from diaphragm closed to each other. Muscular band connecting vagina and epiphallus absent.. Additional retractor other than penial or appendicular absent. Atrium short; with weak atrial retractor. Free oviduct short; much shorter than vagina. Vagina long; not swollen; straight; not lined with loose, spongy tissue; unpigmented. Bursa copulatrix duct rather long; proximally twisted. Bursa copulatrix with stalk; without apical ligament; normal in size; with long neck; well defined. Diverticle normally present; longer than reservoir; expanded. Bursa copulatrix and diverticle distinguishable; forked more distally from their base.

Measurement of genitalia. P: 4.4; Ep: 19.0; Fl: 0.7; VD: 13.0; Va: 3.9; FO: 2.2; BCD: 26.1; BC: 1.6; D: 4.5; A-1+A-2: 6.0; A3: 1.6. A-4+A-5: 20.2.

Figures

FIGURE 1. Distribution map of Pupinidius spp. Red dot, Pupinidius anocamptus, P. nanpingensis nanpingensis and P. nanpingensis ambigua; red circle, P. porrectus; black dot, P. pupinella altispirus; black circle, P. chrysalis; blue dot, P. obrutschewi contractus and P. pupinella pupinella; blue circle: P. latilabrum; green dot, P. melinostoma, P. nanpingensis nanpingensis and P. wenxian sp. nov.; yellow dot, P. obrutschewi obrutschewi and P. streptaxis; yellow circle, P. porrecta pygmaea. P. pupinidius and P. gregorii have not been mapped here due to the unrecognizable locality names. Although the original description of the type locality of P. chrysalis is not accurate and geographically wrong, mapping of the species is possible here based only on the recognized information therein.

FIGURE 6. A – C, Pupinidius pupinella pupinella (Moellendorff, 1901). A, Lectotype, SMF- 41988; B – C, type specimens, ZI RAS-N 498. D – H, Pupinidius pupinella altispirus (Moellendorff, 1901). D, Lectotype, SMF- 41990; E – F, type specimens, ZI RAS-N 602; G, 1 paratype, SMF- 41991; H, HBUMM- 05723 - specimen 2.