Latticed gloss snail
| Latticed gloss snail | ||||||||||||
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Latticed gloss snail ( Aegopinella ressmanni ) |
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| Scientific name | ||||||||||||
| Aegopinella ressmanni | ||||||||||||
| ( Westerlund , 1879) |
The barred gloss snail ( Aegopinella ressmanni ) is a species of land living snail belonging to the family of the gloss snail (Oxychilidae).
features
The right-hand winding case is low-conical with a slightly rounded apex. It reaches a width of 10 to 15 mm and a height of 6 to 8 mm. In the adult stage there are 4 to 4.5 turns. The last quarter of the end turn is greatly expanded both outwards and downwards. The mouth is therefore comparatively large and slightly transversely elliptical. It is very oblique to the coil axis. The mouth edge is straight and tapered sharply. The navel is comparatively narrow. Due to the high apex and the mouth, which is greatly extended downwards, the housing appears somewhat spherical.
The case shows clear, somewhat irregular growth strips that are crossed by also clear spiral lines and create a grid pattern. With wax and spiral stripes, the surface appears matt and silky-shiny.
In the genital apparatus, the spermatic duct (vas deferens) is quite long and opens into the long epiphallus, which quickly swells after the confluence of the spermatic duct and initially becomes thinner again to become a comparatively short penis. The penis swells in thickness very quickly and is no longer structured. The epiphallus is about twice as long as the penis. The penile retractor muscle attaches to the thickened initial part of the epiphallus. In the female tract, the free fallopian tube is extremely long and tortuous. The vagina, on the other hand, is very short. The stem of the spermatheque is very short and the bladder still comes to lie below the egg ladder (spermoviduct) (Riedel).
Similar species
The casing is larger than that of the other European species of the genus Aegopinella , the thread is also slightly higher and more convex, and the habitus appears more spherical than that of the other Aegopinella species. The surface appears much more matt than with other species due to the growth strips and spiral lines. The lesser glossy snail ( Aegopinella pura ) also has this grid pattern of growth strips and spiral lines, but is much smaller. The genital apparatus with the very long epiphallus, which is thickened in the initial part, the short penis and the insertion of the penis retractor muscle on the thickened initial part of the epiphallus is reminiscent of the warmth-loving gloss snail ( Aegopinella minor ), which, however, is also significantly smaller and has no grid pattern on the housing surface.
Geographical distribution and habitat
The distribution area of the species extends from the Austrian Eastern Alps to northern Italy (Udine province), south-west Hungary, Slovenia and Croatia. In Germany there are only very few deposits in Lower Bavaria (Simbach am Inn) and southeast Bavaria (near Burgkirchen an der Alz).
The species lives in damp forests under the leaf litter, mainly montane, in Austria from around 250 to 1,700 m above sea level.
Taxonomy
The taxon was first described in 1883 by Carl Agardh Westerlund as Hyalinia nitens var. Ressmanni . It is now generally recognized as belonging to the genus Aegopinella Lindholm, 1927.
Danger
The species is extremely rare in Germany. The stock situation for Germany is therefore not assessed. The IUCN estimates the species as not endangered.
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 , pp. 114/15
- 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, Dietrich von Knorre: Trivial names of land and fresh water mollusks in Germany (Gastropoda et Bivalvia). Mollusca, 26 (1): 105-156, Dresden 2008 ISSN 1864-5127 , p. 123.
- ^ 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)
- ↑ Carl Agardh Westerlund: Malacological Miscelles. Yearbooks of the German Malacoological Society, 10: 51-72. Frankfurt am Main 1883 Online at Biodiversity Heritage Library , p. 56.
- ↑ AnimalBase: Aegopinella ressmanni (Westerlund, 1883)
- ↑ Fauna Europaea: Aegopinella ressmanni (Westerlund, 1883)
- ↑ MolluscaBase: Aegopinella ressmanni (Westerlund, 1883)
- ^ Vollrath Wiese: The land snails of Germany. 352 pp., Quelle & Meyer, Wiebelsheim 2014 ISBN 978-3-494-01551-4 (p. 179)
- ↑ The IUCN Red List of Threatened Species: Aegopinella ressmanni (Westerlund, 1883)