Allognathus graellsianus | |
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Apertural view of the shell of Allognathus graellsianus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Heterobranchia |
Order: | Stylommatophora |
Family: | Helicidae |
Genus: | Allognathus |
Species: | A. graellsianus
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Binomial name | |
Allognathus graellsianus (
Pfeiffer, 1853)
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Synonyms | |
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Allognathus graellsianus is a species of land snail in the family Helicidae, the true snails. It is endemic to Mallorca, one of Spain's Balearic Islands. [1] This taxa is the type species of the genus Allognathus.
The snail lives in cracks in rocks and walls and is only active when it rains. [1]
A. graellsianus presents a thin globose shell. It has from 4 to 4 ½ whorls of fast growth, showing 5 bands well separated and usually discontinued. The aperture is oval-rounded with a reddish brown reflected peristome. The umbilicus is completely closed. [2]
The species is distributed along northwestern Tramuntana Mountains (western Mallorca), cohabiting in many localities with A. hispanicus.