Non-Marine Mollusca of Gebe Island, North Moluccas 225-240 VERNATE 31/2012 S
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ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Veröffentlichungen des Naturkundemuseums Erfurt (in Folge VERNATE) Jahr/Year: 2012 Band/Volume: 31 Autor(en)/Author(s): Greke Kristina Artikel/Article: Non-marine Mollusca of Gebe Island, North Moluccas 225-240 VERNATE 31/2012 S. 225-240 Non-marine Mollusca of Gebe Island, North Moluccas Kristine Greķe Abstracts through Gebe and Gag towards the northern part of New data and previous records of non-marine molluscs Bird’s Head Peninsula of New Guinea (SUKAMTO et al. from Gebe Islands, North Moluccas, are reviewed. Two 1981). This geological area is being called East Halma- species new to science from Gebe Island are described hera-Waigeo ophiolite terrane (HALL, NICHOLS 1990) and illustrated, namely Aphanoconia aprica sp. nov. or province (SUKAMTO et al. 1981). Geological history and Pupina laszlowagneri sp. nov. One new synonymy and the current geographically isolated position makes is recognized: Planispira kurri (L.Pfeiffer, 1847) (= P. Gebe interesting in a bio- and palaeogeographical as- gebiensis Sykes, 1904). Type material of poorly known pect. Administratively, Gebe belongs to the province of species is discussed and illustrated for the first time. North Moluccas (Maluku Utara) of Indonesia. Annotated species list of terrestrial and freshwater mol- Gebe is narrow and elongate island stretching from NW luscs from Gebe Island is presented for the first time. to SE (Map 1). Gebe’s terrain is flat, rising from sea Comments on biogeographical relationships of Gebe’s level up to ~300 m. Gebe was originally covered by malacofauna are given. dense lowland rainforest. Remnants of this forest are still present in small patches along the island (L. Wag- Zusammenfassung ner, personal communication). Gebe is famous for its Neue und bereits publizierte Angaben von nicht-marinen large nickel deposits and the nickel mine, occupying Mollusken der Insel Gebe (Nord- Molukken) werden re- western part of the island. vidiert. Zwei Arten werden als neu für die Wissenschaft MAYR (1976) describes Gebe and surrounding islands beschrieben und abgebildet: Aphanoconia aprica sp. of Raja Ampat Archipelago as follows: “... all these is- nov. und Pupina laszlowagneri sp. nov. Ein neues Syn- lands are so pure Papuan and form such a well-defined onym wird vorgeschlagen: Planispira kurri (L. Pfeiffer, faunistic unit...” However, this is only true for Gebe’s 1847) (= P. gebiensis Sykes, 1904). Das Typenmaterial ichthyo- (MAYR 1876) and ornithofauna (COATES, der ungenügend bekannten Arten wird erstmals disku- BISHOP 1997). Contrariwise, Gebe’s marsupial fauna tiert und abgebildet. Eine kommentierte Artenliste der shows strong relation with Halmahera (FLANNERY et Land- und Süßwassermollusken der Insel Gebe wird an- al. 1998) and being treated as a “part of oceanic Wal- gefügt. Einige Notizen zu biogeographischen Beziehun- lacean marsupial fauna” (HABERLE et al. 2010). Only gen der Malakofauna von Gebe werden gegeben. fragmentary and incomplete data is available on inver- tebrates of Gebe, with no published survey data or bio- Key words: Wallacea, Gebe Island, North Moluccas, geographical analysis. Raja Ampat, terrestrial & freshwater malacofauna, New malacological material from Gebe Island collec- nomenclature, new species, biogeography, annotated ted in 2011 is important for understanding biogeograp- check-list hical peculiarities and fauna derivation of this tran- sitional island between the northern part of “classic” Wallacea (the Moluccas & Sulawesi) and the Papuan Introduction region (Raja Ampat, New Guinea). The following two species new to science are described and illustrated: Gebe Island is situated eastwards of the Wallace’s line, Aphanoconia aprica sp. nov. and Pupina laszlowagneri about midway between Halmahera (North Moluccas) sp. nov. Type material of Fulton’s and Sykes’s species, and Waigeo (Raja Ampat) islands. Geologically, Gebe as also of Videna hartmanni have been studied. Other is situated on southern part of an arc beginning on Sou- specimens from Gebe and some adjacent islands have th-eastern arm of Halmahera and extending eastward been revised. 225 Map 1. Topological map of Gebe Island and neighbouring Yu Island (prepared using ArcGIS 9 software). Materials and methods History of malacological exploration All type labels are listed in original format, without ad- The available data on non-marine malacofauna of Gebe denda or corrections; separate labels (when more than Island are limited to the two short papers, one of them one) are separated by slashes. Author’s comments are devoted to Gebe, the other just containing descriptions given in square brackets. Only reliable distribution data of two additional species from this island. are given. All taxa are listed systematically. References FULTON (1904) listed six species from Gebe in his pa- are only given with presented data on Gebe. per, including the descriptions of two new camaenid (Papuina fallax, Albersia subsphoerica) and one cyc- Abbreviations lophorid (Leptopoma gebiensis). Fulton noted a further BMNH - British Museum (Natural History), London, three species of terrestrial molluscs collected on Gebe. United Kingdom, In very same journal, SYKES (1904) described two new KGC - private collection Kristine Greķe, Dzidriņas, species of camaeinid snails from Gebe, namely Planis- Latvia, pira gebiensis and Papuina semibrunnea. This material MSNG - Museo Civico di storia naturale “Giacomo was collected by John Waterstradt (Fulton’s species) Doria”, Genova, Italy, or was purchased from the dealer in natural history NME - Naturkundemuseum Erfurt, Germany, specimens, Hans Fruhstorfer (as in case with Sykes’s SMF - Senckenberg Museum, Frankfurt am Main, species) and are now housed in the BMNH. HIDALGO Germany, (1913) listed just Fulton’s and Sykes’s publications in Is. - island, his bibliographical review, without adding any new Prov. - administrative province, data on species described by these earlier authors. BEN- vill. - village or small settlement. THEM JUTTING (1933, 1965) only mentioned Gebe as 226 a locality for two species, Albersia subsphoerica and Pupina (Tylotoechus) laszlowagneri sp. nov. Papuina unicolor. (Figs 7-13) Holotype NME: Indonesia E, Maluku Utara Prov., New descriptions and nomenclatural changes Gebe Island, on the way from Kacepi to Umera vill., 29.X-03.XI.2011, secondary rainforest on limestone, Aphanoconia aprica sp. nov. (Figs 1-6) leg. L.Wagner. Holotype NME: Indonesia E, Maluku Utara Prov., Paratypes 18 specimens: 6 NME, 10 KGC: same lo- Gebe Island, on the way from Kacepi to Umera vill., cality as in the holotype [two of paratypes are juve- 29.X-03.XI.2011, secondary rainforest on limestone, nile shells]; 1 NME, 1 KGC: Indonesia E, Raja Am- leg. L.Wagner. pat Prov., Wayag Island, along the southern coast, Paratypes 4 juvenile specimens: 2 NME, 2 KGC, same 31.X.2011, leaf debris in forest at the foot of limestone locality as in the holotype. cliff, leg. L.Wagner. Measurements, holotype. Shell height 2.6 mm, width Measurements, holotype. Shell height 6.4 mm, width 4.6 mm; operculum height 1.7 mm, width 1.3 mm. 3.4 mm, operculum diameter 1.7 mm. Description. Shell lens-shaped, slightly shiny, little Description. Shell high conical. Shell colouration transparent. Shell colouration orange-brown with pa- orange-brown, yellowish or horny, smooth, glossy and ler peristome. Whorls 4¼, the embryonic whorl flat. slightly transparent, covered by a glaze. Whorls 5, ra- Following ones reticulated with growth lines and very pidly increasing in size. The last whorl occupies more delicate thin spiral ribs visible only under strong mag- than 2/3 of the of total shell height. Top bluntly pointed. nification on adult shell, but more conspicuous on juve- Base rounded. Suture superficial, margined. Umbilicus nile shells; three ribs over and four under the periphery. closed. Aperture circular. Peristome slightly thickened, Periphery bluntly carinate. Base rounded. Umbilicus interrupted by two canals: one on the angular corner, closed by a shiny and granulate, not sharply defined second on the columellar wall. At the columellar side callus. Aperture broad, obliquely rotundate-triangular. the canal is covered by distally rounded plate and Peristome thickened. builds a fold with broad oval exterior opening. Along Operculum brownish with sides of calcareous plate and the upper fissure the exterior peristome margin conti- nucleus being transparent. Operculum shape triangu- nues a little way up the previous whorl, with tooth-like lar-rotundate with very thin calcareous plate bearing plica defining angular canal from the left. concentric growth lines. Inner fold very weak, almost Operculum whitish, circular, consists of 4 to 5 spiral straight at columellar margin. Denticulate projection whorls. rising over the plate on the basal angle. Variability. This species varies slightly in shell colour Diagnosis. Similar to Aphanoconia dunkeri L. Pfeiffer, (the most of the paratypes are horny or yellowish) and 1867 (Nicobar Islands), but differs in last whorl bluntly in shell dimensions (smallest adult paratype shell is carinate (sharply carinate in A. dunkeri), weakly defi- 5.9x3.0 mm). ned callus (well-defined, thick inA. dunkeri), and being Diagnosis. Similar to Pupina speculum Tapparone much smaller (10.5x6 mm in A. dunkeri). Canefri, 1883 (New Guinea: northern Bird’s Head Pe- Etymology. Named from Latin “apricus” (sunny, clear, ninsula, islands