Pomatias rivularis
| Pomatias rivularis | ||||||||||||
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Pomatias rivularis |
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| Scientific name | ||||||||||||
| Pomatias rivularis | ||||||||||||
| Eichwald , 1829 |
Pomatias rivularis is a land-living snail - species of the family of the terrestrial snail (Pomatiidae) in the order of the Sorbeoconcha .
features
The spherical-conical, tight genabelte, very firm shell body is from 11.5 to 16 mm high and 11 to 17 mm wide. It has 4 to 5 very strongly convex and rapidly increasing turns, and a deep seam. The two embryonic coils are smooth. On the postembryonic convolutions the ornamentation consists of strong spiral ribs and clearly weaker radial ribs. The reticulate pattern is therefore not very clear. The last turn takes up about half the height of the case. The mouth is almost round, only slightly angled at the top. The mouth edge is straight and blunt. The edge of the mouth touches the mouth wall very little. The embryonic coils are reddish to reddish-brown in color. The following turns are gray to reddish.
The operculum has 3 to 4 turns. The nucleus is calcified and is only slightly eccentric, shifted towards the edge of the spindle. The wing field is comparatively small. The inner surface is concave. The inner horny layer is pale and translucent, and one can see the comparatively few and short microchannels of the calcified upper layer through the horny layer. The “seam” of the operculum forms a small ring-shaped elevation.
Similar Art
The shells of Pomatias rivularis are slightly wider than the shells of the beautiful land snail ( Pomatias elegans ) and also have stronger spiral ribbing. In the operculum of Pomatias rivularis , the microchannels of the calcareous layer are shorter and less numerous. The alate area of the operculum is smaller.
Geographical distribution and habitat
The distribution area of Pomatias rivularis stretches from northeast Hungary via Croatia , Serbia , Bosnia and Herzegovina , Montenegro , Bulgaria , Romania , Ukraine and Turkey to the North Caucasus ( Dagestan , southern Russia ) and northern Iran .
The animals live in the leaf litter under bushes and old deciduous forests, often on slightly more humid soils. In Bulgaria the species rises up to 1200 m above sea level.
Taxonomy
The taxon was first described in 1829 by Eduard Eichwald as Cyclostoma rivularis . The fauna Europaea lists the following synonym :
- Cyclostoma costulatum Rossmässler, 1837
Russian authors divide the genus into two sub-genera, Pomatias (Pomatias) and Pomatias (Eichwaldipoma) Starobogatov & Anistratenko, 1991. This sub-genre is not accepted by other authors (e.g. Fauna Europaea). Cyclostoma rivularis Eichwald, 1829 is the type species of the subgenus Pomatias (Eichwaldipoma) Starobogatov & Anistratenko, 1991.
supporting documents
literature
- Zoltán Féher, Krisztián Szabó, Miklos Boszsó, Zsolt Pénzes: Recent range expansion of Pomatias rivulare (Eichwald, 1829) (Mollusca: Pomatiidae) in Central-Eastern Europe. Acta Zoologica Academiae Scientiarum Hungaricae, 55 (1): 67-75, 2009 PDF
- 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. 66)
- 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
- Lisa Wilmsmeier, Eike Neubert: On the inner morphology of pomatiid opercula - hidden structures (Gastropoda: Pomatiidae). Archives for Molluscology, 141 (2): 233-249, Frankfurt / M. 2012 PDF
Individual evidence
- ↑ Ákos Uherkovich, Dragica Purger, János Csiky: First find of Pomatias rivularis (Eichwald, 1829) (Mollusca: Pomatiidae) in Croatia. Natura Croatica, 17 (3): 183-192, Zagreb 2008 PDF (534 kB)
- ↑ Eduard Eichwald: Zoologia specialis, quam expositis animalibus tum vivis, tum fossilibus potissimum Rossiae in universum, et Poloniae in specie, in usum lectionum publicarum in Universitate caesarea Vilnensi. Pars prior propaedeuticam zoologiae atque specialem Heterozoorum expositionem continens. Cum icone tituli et quinque aliis lithographicis. Pp. I – VI, pp. 1–314, plates 1–5, Vilnius, Zawadzki 1829 Online at www.biodiversitylibrary.org (p. 302)
- ↑ a b Fauna Europaea - Pomatias rivularis (Eichwald 1829)
- ↑ Yuri I. Kantor, Anatoly Schileyko, Maxim V. Vinarski, Alexander V. Sysoev: Catalog of the Continental Mollusks of Russia and Adjacent Territories. Version 1.0, February 15, 2009, PDF
