| Geomalacus anguiformis | |
|---|---|
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Order: | Stylommatophora |
| Family: | Arionidae |
| Genus: | Geomalacus |
| Subgenus: | Arrudia |
| Species: | G. anguiformis
|
| Binomial name | |
| Geomalacus anguiformis | |
| Synonyms | |
Geomalacus anguiformis is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusc in the family Arionidae, the round back slugs.
Distribution
This species occurs in south Portugal ( Serra de Monchique) and central Spain. [2]
Description
The slug is dark grey with brown hue. [2] It has lighter sides and two light colour bands with dark lower margins running along both sides of the mantle. [2] Mantle is elliptical, extending to tentacles in anterior part. [2] Tentacles are nearly black, thick and not very long. [2] When crawling, the slug has not always a regularly cylindrical shape, there are depressions and dilatations. [2] Sole is light creamy with darker medial zone, with yellowish or greenish hue. [2] Mucus is yellow. [2] Geomalacus anguiformis is 60 mm long (preserved 30 mm). [2]
Shell is elliptical, solid, upper side convex and lower side flat. [2]
The reproductive system is diagnostic feature: Geomalacus anguiformis has atrial diverticulum shorter than spermatheca duct [3] while Kerry slug Geomalacus maculosus has atrial diverticulum longer than spermatheca duct. [3] Geomalacus anguiformis has penis long, vas deferens very thin, spermatheca oval with long duct. [2] Geomalacus anguiformis differs from Geomalacus oliveirae in its atriopenis inserting at the prolongation of the atrial long axis (not laterally). [2]
Ecology
Geomalacus anguiformis was found in olive plantations, under bark. [2]
References
This article incorporates public domain text from the reference. [2]
- ^ Morelet A. (1845). Description des mollusques terrestres et fluviatiles de Portugal. pp. [1-3], I-VII [= 1-7], 1-116, Pl. I-XIV [= 1-14]. Paris. (Bailliere).
- ^ a b c d e f g h i j k l m n "Species summary for Geomalacus anguiformis". AnimalBase, last modified 3 December 2009, accessed 9 December 2010.
- ^ a b Platts, E. A.; Speight, M. C. D. (1988). "The taxonomy and distribution of the Kerry slug Geomalacus maculosus Allman, 1843 (Mollusca: Arionidae) with a discussion of its status as a threatened species". Irish Naturalists' Journal. 22 (10): 417–430.
Further reading
- (in German) Simroth H. (1891). Die Nacktschnecken der portugiesisch-azorischen Fauna in ihrem Verhältnis zu denen der paläarktischen Region überhaupt. Nova Acta Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum 56: [1], 201-424, Tab. IX-XVIII [= 9-18]. Halle. Geomalacus anguiformis is on page 355-359.