Coneuplecta (Nevelasta) pampini ( Cox, 1868 )

Hyman, Isabel T. & Ponder, Winston F., 2010, A morphological phylogenetic analysis and generic revision of Australian Helicarionidae (Gastropoda: Pulmonata: Stylommatophora), and an assessment of the relationships of the family 2462, Zootaxa 2462 (1), pp. 1-148 : 108-109

Coneuplecta (Nevelasta) pampini ( Cox, 1868)

Figures 11K , 26H , 27H , 28H , 30C , 33G , 38B , 39C , 40A–C

Helix (Conulus) pampini Cox, 1868: 111 [Type missing, presumed lost.]; Brazier, 1876b: 121.

Helix (Conulus) darnleyensis Brazier, 1876a: 102 .

Zonites (Hyalina) Conulus pampini: Cox, 1909: 7 .

Nevelasta pampini: Iredale, 1937c: 13 ; Iredale, 1942: 33; Smith, 1992: 239.

Material examined. Queensland, Australia: AM C126763 (one shell measured, photographed), Wide Bay (24º54' S, 152º6' E), pre 1900 ; AM C438751 (two specimens dissected, one radula examined), Fritz Creek State Forest near Ayton, Bloomfield River (15º50' S, 145º21' E), complex mesophyll vine forest, with dominant fan palms, arboreal, 24 Oct. 1975, P.H. Colman .

Description. External morphology: Shell ( Figures 26H , 27H , 28H ) 4.8 whorls, pale golden, transparent, not glossy; protoconch sculptured with spiral and radial ribs (radials stronger); teleoconch with spiral and radial lirae (spirals stronger); shell shape as for genus. Animal white. Sole of foot and caudal apparatus as for genus; caudal horn moderately small.

Mantle cavity ( Figure 38B ): As for genus. Mantle with pigmentation of numerous white spots.

Digestive system: As for genus.

Genital system ( Figures 33G , 39C ): As for genus. Free oviduct long to very long; capsular gland absent. Bursa copulatrix short, approximately same length as free oviduct; duct of bursa copulatrix moderately narrow, distinguishable from bursa copulatrix, internally smooth. Vagina short. Penis short; epiphallus enters penis through a medium length verge, about half penis length; penis internally smooth. Penial sheath enclosing penis and lower part of epiphallus. Epiphallus much longer than penis, internal sculpture not examined. Spermatophore not present in dissected specimens.

Radula ( Figures 30C , 40A–C ): As for genus. Central tooth with very small, high, triangular ectocones. Lateral and marginal tooth fields indistinguishable; latero-marginal teeth with endocones absent; ectocones approximately same length and breadth as mesocone, with 5–9 serrations increasing in number and depth towards outer edge. Radular formula (105.1.105) × 111 rows.

Range and habitat. Coneuplecta (Nevelasta) pampini is found from south of Gladstone in southern Queensland to south of Cooktown in far northern Queensland, with specimens also known from Darnley Island in Torres Strait. The species is usually found in complex mesophyll, microphyll and notophyll vine forests, most commonly in trees but sometimes on the ground or under logs.

Remarks. This species can be distinguished from Coneuplecta calculosa , described below, with which it is sympatric, by its larger size, lower spired shell, stronger protoconch spiral sculpture and stronger teleoconch radial sculpture. It also differs in reproductive and radular characters.

Figures

FIGURE 11. Nervous systems. Cerebral commissure cut (cut regions shaded with diagonal lines). A. Helicarion cuvieri, AM C424333. B. Brevisentis atratus, AM C205294. C. Stanisicarion freycineti, AM C391188. D. Nitor circumcincta, AM C365822. E. Tarocystis responsivus, AM C425327. F. New Caledonian species NC3, MNHN no registration number. G. Ctenophila caldwelli, AM C205301. H. Madagascan species MA1, AM C205304. I. Macrochlamys petrosa, AM C205305. J. Everettia sp., BMNH 20020188. K. Coneuplecta pampini, AM C438751. L. Lamprocystis guttula, FMNH 174940. M. Trochomorpha rubens, FMNH 175247. Scale bars 1 mm except for J (scale bar 2 mm). Abbreviations: ce, cerebral ganglion; pa, parietal ganglion; pe, pedal ganglion; pl, pleural ganglion; vg, visceral ganglion.

FIGURE 26. Shells, dorsal view. A. Westracystis lissus, BMNH 90.12.30.80–4 (S). B. Westracystis lissus, AM C64901 (S of W. tentus). C. Echonitor cyrtochila, BMNH 1922.8.29.16 (H). D. Echonitor albumenoidea, AM C60533 (H). E. Periclocystis ardeni, AM C60541 (H). F. Tarocystis responsivus, AM C104308 (S). G. Conueplecta (Durgellina) calculosa, AM C374873. H. Coneuplecta (Nevelasta) pampini, AM C126763. Scale bars 2 mm (B, G–H), 3 mm (A, C–F). Photographs by M. Allan (F), H. Barlow (B, G–H), D. Beechey (D–E), W. Ponder (A, C). Abbreviations: H, holotype; S, syntype.

FIGURE 27. Shells, lateral view. A. Westracystis lissus, BMNH 90.12.30.80–4 (S). B. Westracystis lissus, AM C64901 (S of W. tentus). C. Echonitor cyrtochila, BMNH 1922.8.29.16 (H). D. Echonitor albumenoidea, AM C60533 (H). E. Periclocystis ardeni, AM C60541 (H). F. Tarocystis responsivus, AM C104308 (S). G. Conueplecta (Durgellina) calculosa, AM C374873. H. Coneuplecta (Nevelasta) pampini, AM C126763. Scale bars 2 mm (B, G–H), 3 mm (A, C–F). Photographs by H. Barlow (B, F–H), D. Beechey (D–E), W. Ponder (A, C). Abbreviations: H, holotype; S, syntype.

FIGURE 28. Shells, ventral view. A. Westracystis lissus, BMNH90.12.30.80–4 (S). B. Westracystis lissus, AM C64901 (S of W. tentus). C. Echonitor cyrtochila, BMNH 1922.8.29.16 (H). D. Echonitor albumenoidea, AM C60533 (H). E. Periclocystis ardeni, AM C60541 (H). F. Tarocystis responsivus, AM C104308 (S). G. Conueplecta (Durgellina) calculosa, AM C374873. H. Coneuplecta (Nevelasta) pampini, AM C126763. Scale bars 2 mm (B, G–H), 3 mm (A, C–F). Photographs by H. Barlow (B, F–H), D. Beechey (D–E), W. Ponder (A, C). Abbreviations: H, holotype; S, syntype.

FIGURE 30. Whole radulae. A. Peloparion iridis, QMMO51026. B. Caldwellia imperfecta, AM C205300. C. Coneuplecta pampini, AM C438751. D. Cystopelta astra, AM C354840. E. Parmellops sp., AM C393245. Scale bars 0.5 mm (A–C), 1 mm (D–E).

FIGURE 33. Penis interiors. A. Erepta odontina, AM C205302. B. Kalidos balstoni, AM C205303. C. Madagascan species MA1, AM C205304. D. Sheldonia poeppigii, NMSA L5563. E. Elisolimax flavescens, NMSA V9710. F. Parmarion martensi, BPBM 252738. G. Coneuplecta pampini, AM C438751. H. Hiona pilsbryi, BPBM 206801 & 20701. I. Trochomorpha rubens, FMNH 175247. J. Videna planorbis, FMNH 160957. K. Dendrotrochus eva eva, FMNH 175196. L. Orpiella concavum, BMNH no registration number. Scale bars 1 mm (A, C–D, F–H, J, M), 2 mm (B, E, I, K). Abbreviations: bc, bursa copulatrix; c, caecum; ep, epiphallus; fov, free oviduct; ovi, ovipositer; p, penis; pp, penial pilaster; prm, penis retractor muscle; ppu, penial pustules; pv, penial verge.

FIGURE 38. Mantle cavities. A. Everettia sp., BPBM 20020188. B. Coneuplecta pampini, AM C438751. C. Hiona pilsbryi, BPBM 20680 & 20701 (mixed). D. Trochomorpha rubens, FMNH 175247. Scale bars 2 mm (B–D), 5 mm (A). Abbreviations: i, intestine; k, kidney; mc, mantle collar; pc, pericardium; pv, pulmonary vein; ur1, primary ureter; ur2, secondary ureter.

FIGURE 39. Reproductive systems. A. Everettia sp., BMNH 20020188. B. Lamarckiella lamarckiana sibuyanensis, FMNH 201967. C. Coneuplecta pampini, AM C438751. D. Coneuplecta calculosa, AM C377891. E. Coneuplecta dahli, MNHN no registration number. F. Hiona pilsbryi, BPBM 206801. G. Liardetia doliolum, BPBM 253684. Scale bars 1 mm (C–E, G), 2 mm (F), 5 mm (A–B). Abbreviations: alb, albumen gland; bc, bursa copulatrix; ca, carrefour; e, eggs / embryos; ep, epiphallus; fov, free oviduct; her, hermaphrodite duct; m, muscle attaching penial sheath to epiphallus; ov, ovotestis; p, penis; pd, penial diverticulum; pr, prostate; prm, penis retractor muscle; pt, penial sheath; pv, penial verge; st, stimulator; ut, uterus; v, vagina; vd, vas deferens.

FIGURE 40. Radulae. SEM. A–C. Coneuplecta pampini, AM C438751. D–F. Coneuplecta calculosa, AM C377891. G–I. Liardetia doliolum, BPBM 253684. J–L. Lamprocystis guttula, FMNH 174940. Scale bars 10 mm (A–I), 20 mm (J–L).