Geomalacus
| Geomalacus | ||||||||||
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Striped slug ( Geomalacus maculosus ) |
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| Systematics | ||||||||||
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| Scientific name | ||||||||||
| Geomalacus | ||||||||||
| Allman , 1843 |
The genus Geomalacus is a genus of the family of slugs (Arionidae) from the suborder of land snails (Stylommatophora). The few species are native to western and southern Europe.
features
The species of the genus Geomalacus are stretched out up to 7 cm long (rarely up to 9 cm). The small housing (up to 4 mm long, 3 mm wide) is firmly calcified and oval with a clearly visible core. It has a convex top and a concave bottom and is completely enclosed by the jacket. The coat takes up the front third of the body. The breathing hole is in front of the middle of the mantle on the right side. In the genital apparatus, the spermatic duct is slender, the epiphallus is very long and twisted. A sac-like structure (homologous to the spermathec) is with the penis / epiphallus transition through a short duct. The penial retractor starts with this duct. The atrium is extraordinarily long, the spermatophore thread-shaped and pentagonal or hexagonal in cross-section.
Geographical distribution, occurrence and way of life
The species of the genus Geomalacus are native to Western Europe (Ireland, Northern Spain and Northern Portugal). They live on lichen-covered rocks in open areas and in forests on moss- and lichen-covered trees. The animals feed on lichens, liverworts and mosses.
Systematics
Some authors divide the genus Geomalacus into two sub-genera. This subdivision is not used by other authors.
- Genus Geomalacus Allman, 1843
- Subgenus Geomalacus' (Geomalacus) Allman, 1843
- Yellow-spotted slug ( Geomalacus maculosus (Allman, 1843))
- Subgenus Geomalacus (Arrudia) Pollonera, 1890
- Geomalacus anguiformis (Morelet, 1845)
- Geomalacus malagensis Wiktor & Norris, 1991
- Geomalacus oliveirae Simroth, 1891
- Subgenus Geomalacus' (Geomalacus) Allman, 1843
swell
Individual evidence
- ↑ Threat Response Plan Kerry Slug Geomalacus maculosus May 2010 PDF ( Page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ z. B. Fechter & Falkner (1990: p. 198ff)
- ↑ Animal Base
literature
- Rosina Fechter and Gerhard Falkner: molluscs. 287 pp., Munich, Mosaik-Verlag 1990 (Steinbach's Nature Guide 10) ISBN 3-570-03414-3
- Michael P. Kerney, RAD Cameron, Jürgen H. Jungbluth: The land snails of Northern and Central Europe. 384 pp., Paul Parey, Hamburg and Berlin 1983, ISBN 3-490-17918-8
- Anatolij A. Schileyko: Treatise on Recent terrestrial pulmonate molluscs, Part 15 Oopeltidae, Anadenidae, Arionidae, Philomycidae, Succineidae, Athoracophoridae, Ruthenica, Supplement 2: 2049-2210, Moscow 2007 ISSN 0136-0027
