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Observations on the Native Land Mollusca of Taranaki

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Observations on the Native Land Mollusca of Taranaki TANE 20 1974 OBSERVATIONS ON THE NATIVE LAND MOLLUSCA OF TARANAKI By P.G. Parkinson* SUMMARY The author's recent collections of land snails from parts of Egmont National Park reveal a total of 40 species of which 22 are new records for Taranaki and three are putative new species (not herein described). When earlier publications of the mollusca of Taranaki are taken into consideration the local fauna is found to consist of 65 recorded species. The commonest species found in the author's montane collections appear to be Charopa pseudoleioda, Ch. reeftonensis, Laoma regularis and Paralaoma sericata "brown", which appear in almost two-thirds of all the samples. Other common species are Ch. wairarapa (a new record), Laoma mariae, Obanella rimutaka and O. spectabilis (both new records) and a putative new species Paralaoma "roseate". The only common native slug is Athoracophorus bitentaculatus rufovenosus. The discovery of the interesting "Egmont Paryphanta" is described and the known collections traced. PREVIOUS LAND SNAIL COLLECTIONS FROM TARANAKI Land Mollusca seem to have been first collected in Taranaki by Mr R. Murdoch of Wanganui who published some of his findings9 and by Preston (published by Sykes14). Most of Murdoch's collection was destroyed by fire sometime before 1913 but duplicates of most of his species were in the collection of Suter (formerly at Wanganui but now in the National Museum, Wellington), and these specimens are the basis of the records made by Suter in his Manual13. These collections furthermore provide the distribution records for Climo5'6 in his review of the New Zealand Charopids. SPECIES PREVIOUSLY RECORDED FROM TARANAKI Allodiscus adriana Hutton 1883 (Suter13 p.637; "Mount Egmont 3,000 ft. to 4,500 ft., and Toko, near Stratford (Murdoch)"). According to Climo7 (p. 103) this record refers at least in part to Pseudallodiscus ponderi Climo (q.v.). Allodiscus chion Sykes 1896 (Suter13 p.368; "near Inglewood, Taranaki (H.B. Preston)"). Type locality near Inglewood. Allodiscus dimorphus (Pfeiffer 1853) (Suter13 p.640; "Toko, near Stratford (Murdoch)"). *16 Liston Cres, Hillcrest, Hamilton. 169 Allodiscus granum (Pfeiffer 1853) (Suter13 p.642; "Toko, near Stratford (Murdoch)"). Climo (pers. comm.) considers that two species are included in the A. granum sensu Suter; one from the North Island and one from the South Island; the nomenclature of these two species has not been clarified. Allodiscus mossii Murdoch 1897 (Suter13 p.643;"... Cape Egmont; Toko, near Stratford; Manawatu (Murdoch) ... ") The type, in Murdoch's collection, was destroyed but co-types are in the Suter collection. Climo (pers. comm.) considers this species conspecific with Allodiscus rusticus. Athoracophorus bitentaculatus rufovenosus Suter 1909 (Suter13; p.795; "Strat• ford"). Charopa anguicula (Reeve 1852) (Suter13 p.702 sub Endodonta anguicula; "Toko, near Stratford9": Climo6 p.302, map.) Charopa bianca (Hutton 1883) (Suter p.704 sub Endodonta bianca; "Toko, near Stratford9": Climo6 p.302, map.) Charopa brounii (Suter 1891) (Climo5 p.208; "Norsewood, Taranaki (Roscoe 21/VII/68)" Norsewood is not in Taranaki, and Climo shows no Taranaki spot on his distribution map for this species.) Charopa buccinella (Reeve 1852) (Suter 1913 p.714 sub Endodonta buccinella; "Toko, near Stratford": Climo5 (p.210; "Norsewood Taranaki," See note under Charopa brounii). Charopa colensoi (Suter 1890) (Suter13 p.724 sub Endodonta tapirina; "Toko, near Stratford ... ") Climo5 (p.212) points out that Suter confused two species under E. tapirina, but it has also been confused with an undescribed North Island species and with C. infecta (Climo pers. comm.). Charopa hectori (Suter 1890) (Suter13 p.692 sub Endodonta hectori; "Tara• naki") This species is not recorded from Taranaki by Climo5. Charopa infecta (Reeve 1852) (Suter13 p.718 sub Endodonta infecta; "Mount Egmont 3,000 ft. to 4,500 ft.; Shannon9"). Climo5 does not record this species from Taranaki. Charopa irregularis (Suter 1890) (Climo5 p.218; "Dawson Falls, Mt Egmont (Buchler)"). Charopa pilsburyi (Suter 1894) (Suter13 p.682 sub Flammulina pilsburyi; "Toko, near Stratford": Climo6 p.313 map.) Charopa pseudoleioda (Suter 1909) (Suter p.695 sub Endodonta pseudoleioda; "Mount Egmont 3,000 ft. to 4 500 ft.9 ... Toko near Stratford.") Charopa reeftonensis (Suter 1892) (Suter p.721; sub Endodonta roseveari; "Toko, near Stratford9": Climo5 p.222, map.) Climo considers roseveari and reeftonensis conspecific. Charopa varicosa (Pfeiffer 1853) (Suter13 p.689, sub Endodonta varicosa; "Toko, near Stratford9"). Climo5 (p.201) has considered Helix tau Pfeiffer 1862 conspecific with Charopa varicosa since "penis morphology is unique and diagnostic for specimens collected at either end of the species range" (I.e. p.204). However he has been forced to revise this opinion since the finding of sympatric series of tau and varicosa at Kawhia10. Suter13 (p.688 sub Endodonta tau) records that species from "Mount Egmont 3,000 ft. and 4,500 ft.9; Kaponga, Eltham, Horokiwi." As no combination for tau under Charopa has so far been published it is 170 necessary to refer to the species here under its old name "Ptychodon tau. " (q-v.) Charopa vortex (Murdoch 1897) (Suter p.732 sub Endodonta vortex; "Toko, near Stratford9".) The type in Murdoch's collection was lost in the fire but there are co-types in Suter's collection. One of these was recently lost (Climo6 p.329). Endodonta roseveari Suter 1896 is Charopa reeftonensis (q.v.) Endodonta tapirina sensu Suter13 (p.677) is Charopa colensoi (q.v.) Flammocharopa costulata (Hutton 1883) (Suter p.676 as Flammulina costulata; "Toko near Stratford9": Climo6 p.293, map.) Flammulina crebriflammis (Pfeiffer 1853) (Suter13 p.677; "Toko, near Strat• ford.9",/. Flammulina zebra (Le Guillou 1842) (Suter13 p.681 sub Flammulina phlogo- phora; "Toko, near Stratford9"). Laoma ariel (Hutton 1883) (Suter13 p.743; "Toko, near Stratford"). Laoma ciliata Suter 1894 (Suter13 p.734; "Toko, Stratford ... (Murdoch)"). Laoma conella (Pfeiffer 1862) (Suter13 p.744; "Toko, near Stratford (Murdoch)"). Laoma glabriuscula (Pfeiffer 1853) (Suter13 p.752; "Taranaki (Cheeseman)"). Laoma mariae (Gray 1843) (Suter"3 p.740; "Mount Egmont 3,000 ft. to 4,500 ft.") Laoma pirongaensis Suter 1894 (Suter13 p.737; "Toko, Stratford (Murdoch)"). Laoma regularis (Pfeiffer 1853) (Suter13 p.757; "Toko, near Stratford; Mount Egmont 3,000 ft. to 4,500 ft. (Murdoch)"). Paralaoma lateumbilicata (Suter 1890) (Suter p.760 sub Laoma lateumbilicata; "Toko, near Stratford (Murdoch)"). Phenacohelix perplexa (Murdoch 1897) (Suter13 p.666; "Cape Egmont (Murdoch)... Type unfortunately destroyed by fire, but co-types are in my collection.") Pseudallodiscus ponderi Climo 1971 (Climo7 p.103; "Stratford, Wellington Dom. Mus. No. M 2049" ... "Allodiscus adriana (Hutt.) (in part): Suter, Man. N.Z. Moll., p.637; not of Hutton 1883.") Rhytida greenwoodii (Gray 1850) (Suter13 p.775; Midhurst, Taranaki.") Schizoglossa novoseelandica (Pfeiffer 1862) (Suter13 p.787; "Toko, near Stratford (Murdoch)... Cape Egmont.. (Alfred Suter)": Powell11 p.367; "Whangamomoma, Taranaki (Miss L.B. Moore); Toko, near Stratford (Suter coll.)").Three specimens of this species, collected around Stratford by Murdoch, were sent by him to the K.K. Hofmuseum (now Natur- historisches Museum), Vienna, in exchanges. These specimens are still at the Museum. According to Suter (I.e.) Pfeiffer's type (collected by Hochstetter at Kakepuku Mt. in the Waikato) was also in the Museum, but this information now appears incorrect. Dr O. Paget of the Museum has kindly informed me (pers. comm.) that the type was retained by Pfeiffer in his personal collection and was thus probably destroyed with this during the Russian advance in the Second World War. The specimens now in the Naturhistorisches Museum are certainly not type material. Suteria ide (Gray 1850) (Suter13 p.670; "Toko"). 171 Therasia traversi (Smith 1884) (Suter13 p.662; "Toko, near Stratford (R. Murdoch)"). Therasiella celinde (Gray 1850) (Suter13 p.662; sub Therasia celinde "Toko, near Stratford (R. Murdoch)"). Therasiella tamora (Hutton 1883) (Suter13 p.660 sub Therasia tamora; "Toko, near Stratford (R. Murdoch)"). According to Cumber8 the range of T. tamora does not extend over Taranaki. Another species T. neozelanica Cumber 1967, however, is shown as extending over Taranaki, although without precise localities being given. Thermia subincarnata (Suter 1894) (Suter13 p.651; Toko, near Stratford, type, (R. Murdoch)"). PREVIOUSLY UNPUBLISHED COLLECTIONS FROM TARANAKI In 1969 Mr P.J. Winter made two collections of snails in Taranaki; these collections, now deposited in the National Museum, Wellington, were found to contain six species not previously recorded from Taranaki. The smaller of the collections was from beneath dry maritime scrub (mostly Muehlenbeckia) at the end of the Cape Egmont road, and contained three species. Two were the introduced species Cochliocopa lubrica (Muller) (two specimens) and Oxychilus cellarius (Muller) (four specimens), and one a native species, Lamellidea (Tomatellinops) novoseelandica (Pfeiffer 1853) (many specimens, a new record). The only other introduced mollusc I have seen in Taranaki is Helix aspersa L. Winter's second collection (PJW Waiau Bush, Taranaki 16/5/69) was somewhat larger and contained the following; Laoma mariae (12 specimens), Laoma marina (2), Charopa eta (3), Charopa caputspinulae (1), Charopa reeftonensis (1), Charopa pseudoleioda (3), Charopa coma (3), Suteria ide (2), Allodiscus
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