Notched smooth worm
| Notched smooth worm | ||||||||||||
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Notched smooth snail ( Azeca goodalli ) |
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| Scientific name | ||||||||||||
| Azeca goodalli | ||||||||||||
| ( A. Férussac , 1821) |
The toothed smooth snail ( Azeca goodalli ), also known as the toothed agate snail , is a terrestrial snail from the family of the smooth snail (Cochlicopidae). It is the only species in the genus Azeca Fleming, 1828.
features
The case measures 5–8 mm in height and 2.4 to 3 mm in width (5.3 to 6.8 mm high, 2.4 to 2.7 mm wide). The bulbous, spindle-shaped housing has 6½ to 7½ flat passages, which are set off by a flat, channeled seam. There is no umbilicus formed. It is whitish, yellowish, yellowish brown to reddish and translucent. When the animal has withdrawn into the enclosure, the last passages through the dark body appear dark. The surface is very shiny.
The inclined mouth (in relation to the longitudinal axis of the housing) is pear-shaped in outline. The whitish edge of the mouth, thickened with lips on the inside, surrounds the entire mouth; it is slightly bent inwards, also slightly inflected at the base. The mouth of the last passage has up to six teeth and folds inside, one palatal, one to three parietal and one to two columellar folds / teeth.
In the male part of the sexual apparatus, the sperm duct (vas deferens) branches off very early from the egg duct (sperm duct). The spermatic duct is comparatively thick and enters the moderately long penis apically. The retractor muscle attaches apically to the penis. The free fallopian tube (oviduct) is very long, the vagina moderately long. The spermathec is only moderately large, the stem comparatively short and thick. As a result, the spermathec does not reach the albumin gland.
Geographical distribution, habitat and way of life
The toothed smooth snail occurs from northern Spain, via France, Belgium to England in the north and Germany in the east (easternmost occurrence in Thuringia). The occurrence in Schleswig-Holstein is probably extinct. However, it is not a contiguous distribution area, but rather individual, isolated occurrences. Fossil is known from Austria and the Czech Republic.
The species lives in the soil litter, in the damp, discarded leaves and in the moss of light mixed forests with low vegetation, in bushes and hedges, usually with a chalky subsoil and often in rocky locations. However, there should be a humidity of 80 to 90% due to the vegetation or litter. In such locations, the animals sit on the underside of stones or dead wood.
Systematics and taxonomy
The taxon was first scientifically described by André Étienne d'Audebert de Férussac under the name Helix (Cochlodonta) goodalli . It is the type species of the genus Azeca Fleming, 1828. The genus Azeca is again the type genus of the family Azecidae Watson, 1920, which was published by Madeira et al. (2010) is perceived as an independent family.
Danger
Due to the very local small occurrences, the species is generally endangered, the small populations can be quickly wiped out by changes in the locations. In Germany the species is considered endangered. In the individual German federal states, the situation is e.g. T. different. The species is already classified as endangered in Bavaria.
supporting documents
literature
- Klaus Bogon: Land snails biology, ecology, biotope protection. 404 p., Natur Verlag, Augsburg 1990 ISBN 3-89440-002-1 (p. 96/7)
- Rosina Fechter and Gerhard Falkner: molluscs. 287 p., Mosaik-Verlag, Munich 1990 (Steinbach's Nature Guide 10) ISBN 3-570-03414-3 (p. 140)
- 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. 83)
- Philippe Bouchet & Jean-Pierre Rocroi: Part 2. Working classification of the Gastropoda . Malacologia, 47: 239-283, Ann Arbor 2005 ISSN 0076-2997
- Anatolij A. Schileyko: Treatise on Recent terrestrial pulmonate molluscs, Part 1. Achatinellidae, Amastridae, Orculidae, Strobilopsidae, Spelaeodiscidae, Valloniidae, Cochlicopidae, Pupillidae, Chondrinidae, Pyramidulidae. Ruthenica, Supplement 2 (1): 1-127, Moscow 1998 ISSN 0136-0027
- María J. Madeira, María A. Elejalde, Luis J. Chueca & Benjamín J. Gómez-Moliner: Phylogenetic Position of the Genus Cryptazeca and the Family Azecidae within the System of the Stylommatophora. Malacologia, 52 (1): 163-168 2010.
Individual evidence
- ↑ a b Bogon (1990: p. 96/7)
- ↑ a b Kerney et al. (1983: p. 83)
- ↑ AnimalBase - Azeca goodalli
- ^ AE Boycott: The Genitalia of Azeca tridens and Cochlicopa lubrica. Journal of Conchology, 16: 53-54, 1916 Online at www.biodiversitylibrary.org (p. 53/4)
- ^ Vollrath Wiese: The land snails of Germany. 352 pp., Quelle & Meyer, Wiebelsheim 2014 ISBN 978-3-494-01551-4 (p. 50)
- ^ Férussac, André Étienne Justin Pascal Joseph François d'Audebard de 1821-1822: Tableaux systématiques des animaux mollusques classés en familles naturelles, dans lesquels on a établi la concordance de tous les systèmes; suivis d'un prodrome général pour tous les mollusques terrestres ou fluviatiles, vivants ou fossiles. i-xlvii, 1-27, 1-110, Paris, Bertrand & London, Sowerby. Online at Biodiversity Heritage Library
- ↑ Red List of Endangered Animals in Germany PDF ( Memento of the original from March 1, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (list only)
- ^ Red list of endangered animals in Bavaria. PDF
