Pupinidius anocamptus ( 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 : 3-5

1. Pupinidius anocamptus ( Moellendorff, 1901)

Figs 1 , 2A , 8 A, 9

Buliminus (Pupinidius) anocamptus Moellendorff, 1901: 346 , pl.14, figs 11, 12; Kobelt, 1902: 850, pl. 121, figs 11–12. Material examined. HBUMM-00332 (eight mature specimens. All measured; specimen-6 dissected): Nanping, (33°12΄ N, 104°12΄ E), Sichuan, China, 2004-V-7, coll. M.Wu.

Distribution. Sichuan (type locality).

Type locality. Nanping (Sichuan, China—previously Gansu, as in the original description).

Diagnosis. Shell bandless; not striate. Aperture with angular tubercle. Most swollen part at penultimate and body whorls. With 7.250–7.750 whorls; height 14.0–17.9, diam. maj. 7.1–8.7. Penis without penial caecum; internally with more than two fine longitudinal pilasters. Papilla developed by fused distal pilasters forming V-shaped structure present. Epiphallus straight. Epiphallic caecum present.

Re-description of shell. Pointed-ovate; apex protruded. Most swollen part at penultimate and body whorls. Shell dextral; thin; solid; semitranslucent; glossy; with 7.250–7.563–7.750 whorls. Whorls not speckled; not spirally grooved, not shouldered, convex. Growth lines usually not very clear. Embryonic shell smooth; polished, with 1.375–1.609–1.750 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 14.0–15.9–17.9 high; 7.1–7.9– 8.7 in diam. maj. Height/width ratio 1.81–2.01–2.28. Aperture completely attached to body whorl; ovate; not adnate; rather oblique; not armed; with angular tubercle; in a plane; 6.1–7.0–7.7 high, 5.2–5.6–6.6 wide. Ratio of shell height to aperture height 2.09–2.28–2.41. Peristome reflexed, straight and not curved backward; expanded; thickened. Parietal callus indistinct. Columellar margin reflexed. Umbilicus narrowly open. Shell uniformly coloured; dark brown, aperture white or reddish tinted.

Genitalia. Vas deferens long; proximally swollen; entering epiphallus apically with distinct demarcation. Epiphallus long; cylindrical; of uniform thickness; generally almost straight; externally smooth. Epiphallic caecum blunt apically; located near vas deferens entrance. Flagellum present; short; tubular; proximally normal; with tip blunt. Penis terminates distally at epiphallus; clavate; without penial caecum; distally enlarged; thin-walled; internally with more than two fine longitudinal pilasters; with one V-shaped pilaster. Vshaped pilaster with proximal free end approaching at penial retractor insertion. A papilla developed by fused proximal of V-shaped structure present. Papilla in median size. Penis without process. Penial verge absent. Penial appendix rather long; branched off from penis at some distance from atrium; divided into sections including A-1+A-2, A-3 and A-4+A-5. A-1 and A-2 fused, interiorly with 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 short papilla. Boundary between A-4 and A-5 indistinct. A-5 short; straight. Penial retractor biramous; attaching to penis and to A-2 near the insertion near A-3; with penial retractor arms arising from diaphragm separately. Additional retractor other than penial or appendicular retractor absent. Muscular band connecting vagina and epiphallus absent. Atrium short; without retractor. Free oviduct much shorter than vagina. Vagina moderately long; not swollen; straight; not lined with loose, spongy tissue; unpigmented. Bursa copulatrix duct moderately long; proximally straight. Bursa copulatrix with stalk; without apical ligament; normal in size; with long neck; well defined. Diverticle longer than reservoir; expanded especially terminally. Bursa copulatrix and diverticle distinguishable; forked more distally from their base. Spermatophore unknown.

Measurement of genitalia. P: 2.6; Ep: 10.3; Fl: 0.7. VD: 7.4. Va: 3.7; FO: 0.7; BCD: 4.6; BC: 1.1; D: 5.6. A-1+A-2: 4.1. A3: 1.4. A-4+A-5: 13.9 (in HBUMM-00332-specimen 6).

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 2. A, Pupinidius anocamptus (Moellendorff, 1901), HBUMM- 00332 - specimen 1. B – D, Pupinidius chrysalis (Annandale, 1923), 3 type specimens of NHM- 1923.5.24.1 – 16 Reg. E – F, Pupinidius gregorii (Moellendorff, 1901). E, Lectotype, SMF- 42003; F, one specimen of paratypes, SMF- 42004.