Southern doll snail
| Southern doll snail | ||||||||||||
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Southern pupa snail ( Lauria sempronii ) |
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| Scientific name | ||||||||||||
| Lauria sempronii | ||||||||||||
| ( Charpentier , 1837) |
The Southern dolls snail ( Lauria Sempronii ) is a terrestrial snail species from the family of lauriidae .
features
The case is only 3 to 3.2 mm high and 1.5 mm wide (thick). It is slender-oval with a blunt apex. The five to six whorls are moderately arched. The skin is reddish brown in color, very thin and translucent. The mouth is oval with a folded, narrow mouth seam. The lip is relatively narrow and thin. The angular tooth is very small or completely absent.
Similar species
It is very similar to the shell of the naveled pupa snail ( Lauria cylindracea ), but even smaller and somewhat narrower than this species. The whorls are more arched and a basal edge is missing. The lip of the mouth is narrower and the angular tooth, if any, is not connected to the outer lip.
Geographical distribution and habitat
The southern pupa snail is found in Catalonia , southern and eastern France (mainly in the Pyrenees and the French Alps ). The occurrence extends into southern Switzerland ( Valais , Ticino ), northern Italy, the Apennines , southern Italy to Austria . There are also individual occurrences in England , although earlier occurrences may have already become extinct. The species is also reported from the Canary Islands and Albania .
It prefers to live in the forest, on old walls that are overgrown with moss, and more rarely on stumps that are overgrown with moss. The habitats are in higher regions, but rarely above 1000 m above sea level.
Way of life
Almost nothing is known about the way of life of the species. However, it is likely to be similar to that of the closely related Nabeled pupa snail ( Lauria cylindracea ), which has been studied somewhat better in this regard. The hermaphroditic animals are ovoviviparous , i. H. the eggs are retained in the mantle cavity until the juvenile snails hatch. So they “give birth” to fully developed, very few young. The bifurcated doll snail grows very slowly, takes two years to reach sexual maturity and is around five years old. A maximum of six young are born per breeding season.
Taxonomy
The taxon was first described in 1837 by Johann von Charpentier as Pupa (Sphyradium) Sempronii . The holotype comes from Gondo at the Simplon Pass (Canton, Valais, Switzerland). Today it is consistently placed in the genus Lauria Gray, 1840.
Hazard and protection
The species is endangered in many regions (e.g. Switzerland), in Austria it may already be extinct. In England it was also assumed that the population in Gloucestershire would have died out. However, new deposits have been found.
supporting documents
literature
- Michael P. Kerney, RAD Cameron & Jürgen H. Jungbluth: The land snails of Northern and Central Europe. 384 pp., Paul Parey, Hamburg & Berlin 1983 ISBN 3-490-17918-8
- 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 (hereinafter Welter Schultes, Identification Book , with corresponding page number)
Individual evidence
- ↑ David M. Alba, Antoni Tarruella Ruestes, Jordi Corbella Alonso, Manuel Vilella Tejedo, Glória Guillén Mestre, Lluís Prats Pi, Josep Quintana Cardona: Addenda a la llista dels molluscos continentals de Catalunya. Spira, 1 (4): 1-10, 2004 PDF ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ^ M. Larraz: Distribución de Lauria sempronii (Gastropoda, Pupillidae) en la Península Ibérica. Noticiario de la Sociedad Española de Malacología, 39: 69-71, 2003.
- ↑ Dario Ferreri, Marco Bodon, Giuseppe Manganelli: Molluschi terrestri della provincia di Lecce. Thalassia Salentina, 28: 31-130, 2005 ( PDF )
- ↑ a b Gloucestershire Biodiversity Action Plan: Lauria semponii (a snail) PDF ( Memento of the original from November 29, 2004 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ A b P. F. Whitehead: Another Gloucestershire locality for Lauria sempronii (Charpentier, 1837) (Gastropoda, Stylommatophora, Pupillidae) with observations on the species. Journal of Conchology, 39 (4): 377-380, 2007
- ^ Zoltán Fehér and Zoltán Péter Eröss: Contribution to the Mollusca fauna of Albania . Field research results of the Hungarian Natural Science Museum between 1992 and 2007. Schr. Malakozool. 25: 3-21 Cismar, Ostholstein, 2009 ISSN 0936-2959 PDF
- ^ Register of Species of the Fauna of Albania 2010 PDF
- ^ Johann von (Jean de) Charpentier: Catalog des mollusques terrestres et fluviatiles de la Suisse. Formant la seconde partie de la faune Helvétique. New memoranda of the Swiss General Society for the Whole Natural Sciences - Nouveaux Mémoires de la Société Helvétique des Sciences Naturelles, 1 (2): 1-28, Neuchatel Online at www.biodiversitylibrary.org (p. 15).
- ↑ Welter Schultes, Identification Book, p. 133
- ^ Fauna Europaea: Lauria JE Gray 1840
- ↑ Red Lists Switzerland PDF
