Pagodulina sparsa
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Pagodulina sparsa |
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| Scientific name | ||||||||||||
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| Pilsbry , 1924 |
Pagodula sparsa , also squat pagoda snail, is a type of snail from the family of the barrel snail (Orculidae), which belongs to the subordination of the land snail (Stylommatophora).
features
The egg-shaped case is 2.5 to 3 mm high and 1.9 to 2 mm wide (3.2 to 3.5 mm high and 1.8 to 1.9 mm wide). It has about eight turns. The last turn rises almost to the seam of the previous turn. The rise in the last turn is somewhat variable. The surface shows comparatively long, lamellar-like ribs, around six or seven ribs per millimeter (on the penultimate turn). The distance can be a little wider towards the mouth. The mouth is rounded and square, but is a bit crooked. The palate fold is comparatively oblique in the mouth. A parietalis is missing.
Similar species
The palate fold is more oblique in Pagodulina than in Pagodulina pagodula and is somewhat more pronounced; in addition, the inner end of the palate fold is a little deeper.
Geographical distribution and habitat
The distribution area of the species extends from Austria (Tyrol, Styria, Carinthia), northeast Italy , through Slovenia to Croatia , Bosnia and Herzegovina and Macedonia . Outside this area there are isolated occurrences on the Greek islands of Corfu , Andros , Karpathos and Naxos, as well as in western Turkey .
It lives there in the litter of moist forests on calcareous subsoil, especially in karst regions. It occurs from sea level to 1800 m.
Taxonomy
The taxon was basically described for the first time by Carl Agardh Westerlund in 1887 as Pupa pagodula var. Obliqua . However, the name is preoccupied by Pupa obliqua Nevill, 1880 and was therefore replaced in 1924 by Henry Augustus Pilsbry with the new name Pagodulina pagodula sparsa . The type locality is Malborghetto Valbruna ("Malborgeth") in the province of Udine, northeast Italy. Today the taxon is generally valued as an independent species. Pilsbry also provided specimens from the French Maritime Alps of the (then) subspecies Pagodulina pagodula sparsa . The case dimensions given by Pilsbry for Pagodulina pagodula sparsa are consistently higher and slightly narrower than the case dimensions given by Westerlund and Welter Schultes. Possibly they are based on the specimens from southern France that are no longer counted as a species. The dimensions of the specimens from Rakakerwald given by Pilsbry also differ from the information given by Welter Schultes, who had also collected in the Rakaker Forest.
According to Welter Schultes, Pagodulina klemmi is a younger synonym of Pagodulina sparsa . The Fauna Europaea, however, lists this taxon as a separate species.
Danger
In Carinthia, Pagodulina sparsa is at the pre-warning level. Overall, however, the species is not endangered.
supporting documents
literature
- Bernhard Hausdorf: The Orculidae of Asia (Gastropoda: Stylommatophora). Archiv für Molluskenkunde, 125 (1/2): 1-86, Frankfurt / Main, 1996 (p. 67).
- Walter Klemm: About Eastern Alpine Orculae. Archiv für Molluskenkunde 96: 101–111, Frankfurt / Main, 1967.
- Hartwig Schütt: Land snails of Turkey. 2nd, completely revised and expanded edition. 497 pp., Düsseldorf, Natur & Wissenschaft, 1996 (p. 57).
On-line
Individual evidence
- ^ A b Paul Mildner, Ursula Rathmayer: Red list of the molluscs of Carinthia (Mollusca). In: WE Holzinger, Paul Mildner, T. Rottenburg, C. Wieser (eds.): Red lists of endangered animals in Carinthia. Nature conservation in Carinthia, 15: 643 - 662, Klagenfurt 1999 PDF (p. 648)
- ^ A b Henry Augustus Pilsbry: Manual of Conchology. Second Series: Pulmonata. Vol. XXVII. Pupillidae (Orculinae, Pagodulinae, Acanthinulinae, etc). Pp. I-IV, 1-369, Philadelphia, 1922-1926 online at www.archive.org (pp. 171/2 = 1924).
- ^ Robert AD Cameron, M. Mylonas, K. Vardinoyannis: Local and regional diversity in some Aegean land snail faunas. Journal of Molluscan Studies, 66: 131-142, 2000 PDF
- ↑ Carl Agardh Westerlund: Fauna of the inland Conchylia living in the Palearctic region (Europe, Caucasia, Siberia, Turan, Persia, Kurdistan, Armenia, Mesopotamia, Asia Minor, Syria, Arabia, Egypt, Tripoli, Tunisia, Algeria and Morocco). III. Gene. Buliminus, Sesteria, Pupa, Stenogyra & Cionella. Pp. 1–183, 1–15, 1–26, Lund, Håkan Ohlsson, 1887 Online at www.biodiversitylibrary.org (p. 91)
- ↑ Fauna Europaea: Pagodulina sparsa Pilsbry 1924
- ↑ Francisco W. Welter-Schultes: European non-marine molluscs, a guide for species identification = identification book for European land and freshwater mollusks. A1-A3 S., 679 S., Q1-Q78 S., Planet Poster Ed., Göttingen 2012, ISBN 3-933922-75-5 , ISBN 978-3-933922-75-5 (S. 152)
- ↑ Fauna Europaea: Pagodulina klemmi E. Gittenberger & Subai 1978
- ↑ Pagodulina sparsa in the IUCN Red List of Threatened Species 2011.11. Posted by: Falkner, G., Falkner, M. & von Proschwitz, T., 2010. Retrieved June 1, 2014.
