Little Daudebardie
| Little Daudebardie | ||||||||||||
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Little Daudebardia ( Daudebardia brevipes ) |
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| Daudebardia brevipes | ||||||||||||
| Draparnaud , 1805 |
The Daudebardia Brevipes ( Daudebardia brevipes ) is a predatory living snail species from the family of Daudebardien (Daudebardiidae) from the subordination of terrestrial snails (gastropod). They are "half-slugs"; only the young can fully withdraw into the housing. The adult animals wear the small, ear-shaped housing on the rear part of the coat.
features
The housings are flattened and the last turn is greatly expanded in the shape of an ear. It has around 1.5 to 1.75 turns and is around 4–4.6 mm in size. It appears oval in outline, the outer edge of the last gallery is rounded. It is light yellowish to glass-colored, shiny and thin-walled. The surface shows fine growth lines. The embryonic casing is not completely surrounded by the last contact. The young animal can initially withdraw into the housing. The housing then remains in its development and only sits as a small cap on the rear part of the shell. The animal becomes a "half-slug". When stretched out, the animal can be up to 17 to 20 mm long. The shell and mollusc are therefore slightly smaller than those of the reddish daudebardia. The soft body has a blue-gray color.
Geographical occurrence, habitat and way of life
The Little Daudebardia lives in the leaves and under stones in the damp forests of the low mountain range, often together with the closely related Reddish Daudebardia ( Daudebardia rufa ). Like them, it feeds predatory on earthworms, insects (larvae) and other snails. The distribution area is also similar to this species. However, the distribution area of the small Daudebardie has larger distribution gaps compared to this species. It stretches from North Africa, through southern and western Europe to the eastern Mediterranean and the Balkan Peninsula. In the north the distribution area extends to the Harz and southern Saxony. In Switzerland the Little Daudebardia occurs up to 700 m altitude, in Bulgaria up to 1500 m.
Systematics
The Kleine Daudebardie was first scientifically described in 1805 by Jacques Philippe Raymond Draparnaud under the name Helix brevipes . According to Animalbase, the type locality should be the area around Überlingen on Lake Constance.
swell
literature
- Rosina Fechter and Gerhard Falkner: molluscs. 287 pp., Mosaik-Verlag, Munich 1990 (Steinbach's Nature Guide 10) ISBN 3-570-03414-3
- Jürgen H. Jungbluth and Dietrich von Knore: Trivial names of land and freshwater mollusks in Germany (Gastropoda et Bivalvia). Mollusca, 26 (1): 105-156, Dresden 2008 ISSN 1864-5127 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
Individual evidence
- ↑ a b [1]
- ↑ Draparnaud J.-P.-R. 1805. Histoire naturelle des mollusques terrestres et fluviatiles de la France . Ouvrage posthumous. Avec XIII planches. - pp. [1-9], j-viij [= 1-8], 1-134, [Pl. 1-13]. Paris, Montpellier. (Plassan, Renaud).