Pupinidius nanpingensis nanpingensis ( 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 : 11-13

7. Pupinidius nanpingensis nanpingensis ( Moellendorff, 1901)

Figs 1 , 4A–D , 8 D, 12

Buliminus (Pupinidus) nanpingensis Moellendorff, 1901: 346 , pl. 14, figs 13–17; Wiegmann, 1901: 249, pl. 11, figs 45–48; Kobelt, 1902: 850, pl. 121, figs 11, 12.

Pupinidius nanpingensis nanpingensis Yen, 1939: 84 , pl. 8, fig. 1.

Material examined. HBUMM-05497 (20 fmss, 8 young or not fully matured): from 5 km from Hejiaba Bridge to Bikou town, from 689 m a.s.l., 32°45΄57.3΄ N, 105°13΄36.4΄ E to 641 m a.s.l., 32°45΄43.8΄ N, 105°14΄21.5΄ E, hill side, limestone and loess, Wenxian , Gansu, China; coll. M.Wu, J.Liu, W.Zheng & L.Gao; HBUMM-05567 (4 fmss): 789 m a.s.l., 32°51΄41.6΄ N, 104°50΄43.1΄ E, Hendan, Wenxian , Gansu, China; 2006-IX-29, coll. M.Wu, J.Liu, W.Zheng, L.Gao; ZI RAS-N193: type, Nanping, Sichuan, China, 1885-VII- 19, coll. Potanin, det. Moellendorff). SMF-41994: Holotype. Nan-ping, Kansu, China. Slg. O.v.Moellendorff (Measurement of holotype: ewh 1.500, wh 6.250, h 21.1, diam. maj. 11.8, aph 9.9, apw 7.6). SMF-41995: two young shells. Ha-ti-gu bei Nan-ping, China. Slg. O.v.Moellendorff.

Distribution. Sichuan, Gansu.

Type locality. Nanping (Sichuan, China).

Diagnosis. Shell bandless; not or faintly striate. Aperture with weak angular tubercle. Most swollen part at penultimate and body whorls. With 6.250–7.000 whorls; height 17.1–21.5, diam. maj. 9.6–12.5. Penis without penial caecum; internally with more than 2 fine longitudinal pilasters. Papilla developed by fused proximal pilasters forming V-shaped structure present. Epiphallus forming a few loops. Epiphallic caecum absent.

Re-description of shell. Ovate; apex not protruded. Most swollen part at body whorl. Dextral; thin; solid; semitranslucent; glossy; not speckled; never spirally grooved; with 6.250–6.664–7.000 whorls. Upper whorls normally coloured. Whorls not shouldered; normally convex. Embryonic shell smooth; not polished; with 1.250–1.508–1.750 whorls. Postnuclear whorls smooth. Last whorl slightly gradually ascending towards aperture; rounded at periphery; without smoothed spiral peripheral depression. Shell 17.1–18.5–21.5 high; 9.6–10.7– 12.5 in diam. maj. Height/width ratio 1.57–1.73–1.89. Aperture ovate; not adnate; oblique; not armed; with a tiny angular tubercle; height 8.1–8.8–9.7, width 6.3–7.0–7.8. Ratio of shell height to aperture height 1.92–2.10–2.26. Peristome reflexed, forming a distinct cuff; expanded; thickened. Parietal callus indistinct. Columellar margin reflexed. Umbilicus narrowly open. Shell uniformly coloured or multicoloured; mostly uniformly greenish brown, some individuals with weak whitish streaks below apex; not brightly banded; spirally bandless.

Genitalia. Vas deferens long; swollen proximally; entering epiphallus apically with distinct demarcation. Epiphallus long; cylindrical and of uniform thickness; forming a few loops; externally smooth. Epiphallic caecum absent. Flagellum present; short; conic; proximally normal; with tip blunt. Penis clavate; evenly thick; without penial caecum; thin-walled; internally with more than 2 fine longitudinal pilasters. Penis internally Vshaped pilaster with proximal free end approaching at penial retractor insertion; distally developing a papilla in median size. Other structure inside penis absent. Penial process sac-like; situated at boundary between epiphallus and penis. Penial verge absent. Penial appendix moderately long; branched off from proximal portion of penis; divided into sections including A-1+A-2, A-3, A-4 and A-5. A-1 long. A-1 and A-2 fused. 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 short papilla. Boundary between A-4 and A-5 indistinct. A-5 short; straight. Penial retractor biramous; attaching to penis in middle part and to A-1+ A-2; with penial retractor arms arising from diaphragm closed to each other. Additional retractor other than penial or appendicular absent. Muscular band connecting vagina and epiphallus absent. Atrium short; without atrial retractor. Free oviduct moderately long; subequal to vagina in length. Vagina long; swollen; straight; not lined with loose, spongy tissue; unpigmented. Bursa copulatrix duct rather long; proximally twisted. Bursa copulatrix with stalk; without apical ligament; voluminous; with long neck; well defined. Diverticle normally present; shorter than reservoir; expanded. Bursa copulatrix and diverticle distinguishable; forked more distally from their base.

Measurement of genitalia. P: 4.1; Ep: 22; Fl: 0.6; VD: 14.2; Va: 3.9; FO: 2.6; BCD: 19; BC: 1.4; D: 2.6; A-1+A-2: 3.9; A3: 1.5; A-4+A-5: 13.4 (in HBUMM-05577-specimen 13).

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 8. Genitalian schematics of some Chinese Pupinidius species. The relative lengths showed here are based on the actual ratios for each species, except those of vas deferece and the lengths of the zigzaged parts (correspondingly looped parts in specimen) in 8 B, 8 C, 8 D and 8 G .. A, Pupinidius anocamptus (Moellendorff, 1901); B, P. latilabrum (Annandale, 1923); C, P. melinostoma melinostoma (Moellendorff, 1901); D, P. nanpingensis nanpingensis (Moellendorff, 1901); E, P. obrutschewi obrutschewi (Moellendorff, 1901); F, P. obrutschewi contractus (Moellendorff, 1901); G, P. pupinella altispirus (Moellendorff, 1901); H, P. wenxian sp. nov. See Material and Methods for abbreviation.

FIGURE 4. A – D, Pupinidius nanpingensis nanpingensis (Moellendorff, 1901). A – B, respectively HBUMM- 05497 - specimen 7 & 8; C, Holotype, SMF- 41994; D, type specimen, ZI RAS-N 193. E – G, Pupinidius obrutschewi obrutschewi (Moellendorff, 1901). E, type specimen, ZI RAS-N 512; F, HBUMM- 05672 - specimen 12; G, Lectotype, SMF- 41982.