Allognathus graellsianus
Apertural view of the shell of Allognathus graellsianus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Stylommatophora
Family: Helicidae
Genus: Allognathus
Species:
A. graellsianus
Binomial name
Allognathus graellsianus
(Pfeiffer, 1853)
Synonyms
  • Helix grateloupi Graells, 1846
  • Helix graellsiana Pfeiffer, 1848

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]

Description

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]

Allognathus graellsianus Escorca (Mallorca). Scale bar 1 cm.

Distribution

The species is distributed along northwestern Tramuntana Mountains (western Mallorca), cohabiting in many localities with A. hispanicus.

References

  1. 1 2 3 Gómez Moliner, B.J. (2011). "Allognathus graellsianus". IUCN Red List of Threatened Species. 2011: e.T877A13088057. doi:10.2305/IUCN.UK.2011-1.RLTS.T877A13088057.en. Retrieved 14 November 2021.
  2. ↑ Chueca, Luis J.; Forés, Maximino; Gómez-Moliner, Benjamín J. (2013). "Consideraciones nomenclaturales sobre las especies del género Allognathus (Gastropoda: Pulmonata: Helicidae) y estudio anatómico de Allognathus hispanicus tanitianus". Iberus. 31: 63–74.
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