Southern cylinder diaper snail
| Southern cylinder diaper snail | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Southern cylinder diaper snail ( Truncatellina callicratis ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Truncatellina callicratis | ||||||||||||
| ( Scacchi , 1833) |
The southern cylinder nappy snail ( Truncatellina callicratis ) is a species of the nappy snail family (Vertiginidae) from the suborder of land snails (Stylommatophora).
features
The cylindrical shell of the southern cylinder diaper snail is 1.6 to 2.2 mm high and 0.7 to 0.9 mm wide. The coils are moderately arched and separated from each other by a deep seam. The surface is provided with weak, irregular ribs. In some examples, the housing can also be approximately smooth. deeper. The mouth is egg-shaped, slightly higher than it is wide. The mouth space is weakly reinforced and only slightly bent, especially at the basal and spindle edge. The typical shape has three teeth deep in the mouth, a parietal, columellar and palatal tooth. The palatal tooth is usually clearly visible in the frontal view. In some populations, the teeth can also be more or less reduced, or completely absent. In such cases the shell can hardly be distinguished from the cylindrical diaper snail ( Truncatellina cylindrica ).
Similar species
The shell is very similar to the shell of the beaded cylinder diaper snail ( Truncatellina costulata ) and the cylinder diaper snail ( Truncatellina cylindrica ). The casing of the cylindrical worm is very slightly conical. The mouth seam of the beaded cylinder diaper snail is wider. The cylinder diaper snail has no teeth protruding into the mouth. However, the southern cylindrical snail also has populations with poorly developed or even missing teeth. Such specimens are difficult to distinguish from one another.
Geographical distribution and habitat
The species occurs very dispersed from Spain in the west to the Caucasus, Central Asia and Pakistan. In the south the area extends to Algeria, in the north to southern Germany and southern England. In Switzerland, the species rises up to 2200 m above sea level. In England it occurs mainly on the coasts.
The species lives on very dry limestone grasslands on open, rocky slopes. The species is also found on cliffs and in old quarries in southern England.
Taxonomy
The taxon was first described by Arcangelo Scacchi in 1833 as Turbo callicratis . The Fauna Europaea has the following synonyms :
- Vertigo dinii De Stefani, 1883
- Vertigo callicratis subvar. marcuccii De Stefani, 1883
- Vertigo callicratis forma nodosaria De Stefani, 1883
- Pupa rivierana Benson, 1854
- Vertigo callicratis subvar. simii De Stefani, 1883
- Pupa strobeli Gredler, 1853
- " ? zanellia Benoit, 1858"
and Kerney et al. (1983):
- Truncatellina rivierana britannica Pilsbry, 1920
Danger
The species is threatened with extinction in Germany and is therefore listed in hazard category 1.
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 (p. 90)
- 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 (S. 121)
- Vollrath Wiese: Germany's land snails. 352 pp., Quelle & Meyer, Wiebelsheim 2014 ISBN 978-3-494-01551-4 (p. 62)
Individual evidence
- ↑ Beata M. Pokryszko, Kurt Auffenberg, Jaroslav Č. Hlaváč, Fred Naggs: Pupilloidea of Pakistan (Gastropoda: Pulmonata): Truncatellininae, Vertigininae, Gastrocoptinae, Pupillinae (In Part). Annales Zoologici, 59 (4): 423-458, 2009 doi : 10.3161 / 000345409X484847 .
- ^ Arcangelo Scacchi: Osservazioni zoologiche. Pp. 1–27, Napoli 1833. Online at www.biodiversitylibrary.org (p. 11)
- ↑ Fauna Europaea: Truncatellina callicratis
- ↑ a b c d Carlo de Stefani: Molluschi viventi nelle Alpi Apuane nel Monte Pisano e nell'Appennino adiacente. Pp. 11-239, plate 9, Siena, Bargellini 1883. Siena; 1883
- ^ WH Benson: Characters of a new European Pupa, and of a new Australian Bulimus. Annals and Magazine of Natural History, Series 2, 13: 97-99, London 1853 Online at www.biodiversitylibrary.org
- ↑ Online at Bayerische Staatsbibliothek digital (p. 48)
- ↑ Luigi Benoit, Nicola Tiberi: Illustrazione sistematica critica iconografica de 'testacei estramarini della Sicilia ulteriore e delle isole circostanti, di Luigi Benoit ... aggiuntavi la descrizione di alcuni testacei marini nuovi o poco conosciuti del Mediterraneo, di Nicola Tiberi del Mediterraneo. Naples, Stabilimento tipografico del Cav. Gaetano Nobile, 1857-62 Online at www.biodiversitylibrary.org (p. 195), or plate 5, Fig. 10
- ^ Henry Augustus Pilsbry & CM Cooke: Manual of Conchology. Second Series: Pulmonata, 25. Pupillidæ (Gastrocoptinæ, Vertigininæ). SI-IX (= 1-9), pp. 1-401, pl. 1-34, Philadelphia. Online at archive.org (p. 77)
- ↑ JH Jungbluth, D. von Knorre (with the assistance of U. von Bössneck, K. Groh, E. Hackenberg, H. Kobialka, G. Körnig, H. Menzel-Harloff, H.-J. Niederhöfer, S. Petrick, K Schniebs, V. Wiese, W. Wimmer, ML Zettler): Red list of internal mollusks [snails (Gastropoda) and mussels (Bivalvia)] in Germany. Announcements of the German Malacoological Society, 81: 1-28, Frankfurt / M. 2009 PDF ( Memento of the original from June 16, 2013 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. (1.3 MB)
annotation
- ↑ The Helix zanelliana Testa (= Helix zanellia Testa, 1842) described by Luigi Benoit (p. 195) and shown (plate 5, Fig. 10 ) is not a truncatellina .
