Small gloss snail
| Small gloss snail | ||||||||||||
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Small gloss snail |
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| Scientific name | ||||||||||||
| Aegopinella pura | ||||||||||||
| ( Alder , 1831) |
The Small glass snail ( Aegopinella pura ) is a living on the land snail species from the family of oxychilidae (Oxychilidae).
features
The right -hand winding casing is low-conical with 3½ to 4½ moderately arched windings that increase slowly and evenly. The seam is very flat. The case measures 3.5 to 5 mm in width and 2.0 to 2.7 mm in height. The periphery is very lightly shouldered to very lightly keeled. The end turn widens a little in the last quarter towards the mouth, but does not fall off. The mouth is slightly oblique-elliptical, apart from the incision through the preceding turn. The mouth edge is straight and pointed. The navel is wide and somewhat eccentric; it takes up about a quarter of the width of the case.
The housing is thin-walled and translucent, and is colorless to slightly horn-colored. The surface shows clear growth stripes that intersect with interrupted spiral stripes (only visible with a microscope under 35 to 40 times magnification). The surface is only slightly shiny.
The soft body is light gray to dark gray with two black lines on the sides, often with black spots. The head and upper tentacles are colored dark gray. In the male tract of the genital apparatus, the spermatic duct (vas deferens) penetrates the comparatively short and thin epiphallus, which forms a 180 ° loop. It is slightly thickened in the distal part and merges into the thick and long penis with a slight constriction. The penis is roughly twice as long as the epiphallus. The penile retractor muscle starts at the transition from the thin part to the slightly thickened part of the epiphallus, roughly at the apex of the epiphallus loop. In the female tract the free fallopian tube is moderately long, the stem of the spermathek is quite short. The bladder reaches the Eisamenleiters.
Similar species
The lesser gloss snail is significantly smaller in the adult stage than the other Aegopinella species. It is wound more tightly and can thus be distinguished from young animals of other Aegopinella species (also because of the more coils of the same size). It also has a clear spiral stripe.
Geographical distribution and habitat
The distribution area extends from the British Isles and France , across Central Europe, Northern Italy and southern Scandinavia to Eastern Europe, the Caucasus and northern Iran . It was likely anthropogenic to Iceland and coastal areas of northern Norway . It is also found in Corsica and Sardinia , while it is absent from other Mediterranean islands.
The species lives in the soil litter and humus layer, but also under dead wood, of moderately moist habitats, in deciduous forests, rows of shrubbery and field trees, mainly on calcareous soils. In the mountains it can also be found in the grass strips of rock faces. In Switzerland it rises to 2,300 m above sea level, in Bulgaria even to 2,400 m.
Way of life
Reproduction takes place in spring. The individuals die after oviposition. Sexual maturity is reached after two years.
Taxonomy
The taxon was established by Joshua Alder in 1830 as Helix pura . It is the type species of the genus Aegopinella Lindholm, 1927, that is generally recognized.
Danger
The species is not endangered in Germany.
literature
- Klaus Bogon: Land snails biology, ecology, biotope protection. 404 p., Natur Verlag, Augsburg 1990, ISBN 3-89440-002-1 , p. 192/93.
- 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 , p. 164
- Adolf Riedel: About the Aegopinella species (Gastropoda, Zonitidae) from Yugoslavia, Italy and France. Annales Zoologici, 37 (5): 235-258, 1983 PDF
Individual evidence
- ↑ Jürgen H. Jungbluth and Dietrich von Knorre: Trivial names of land and freshwater mollusks in Germany (Gastropoda et Bivalvia). Mollusca, 26 (1): 105-156, Dresden 2008 ISSN 1864-5127 , p. 123.
- ^ Alexandru V. Grossu: Gastropoda Romaniae 4 Ordo Stylommatophora Suprafam: Arionacea, Zonitacea, Ariophantacea şi Helicacea. 564 pp., Bucharest 1983, pp. 122/23.
- ^ A b 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., Göttingen, Planet Poster Ed., 2012 ISBN 3-933922-75-5 , ISBN 978-3-933922-75-5 (p. 398)
- ↑ H. Schwer: Population biology of small leaf litter-dwelling land gastopods: life cycle and seasonal abundance dynamics using the example of Aegopinella pura (Alder 1830). Announcements of the German Malacoological Society, 54: 13-14, Frankfurt am Main
- ^ Joshua Alder: A catalog of the land and fresh-water testaceous Mollusca found in the vicinity of Newcastle upon Tyne, with remarks. Transactions of the Natural History Society of Northumberland and Durham, 1 (1): 26-41, London, 1830 Online at Biodiversity Heritage Library , p. 37.
- ↑ AnimalBase: Aegopinella pura (Alder, 1830)
- ↑ Fauna Europaea: Aegopinella pura (Alder, 1830)
- ↑ MolluscaBase: Aegopinella pura (Alder, 1830)
- ^ Vollrath Wiese: The land snails of Germany. 352 pp., Quelle & Meyer, Wiebelsheim 2014 ISBN 978-3-494-01551-4 (p. 174)