Allognathus graellsianus

Allognathus graellsianus
Apertural view of the shell of Allognathus graellsianus
Conservation status
Least Concern  (IUCN 3.1) [1]
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
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. 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.

External links

• http://luisjavierchueca.com/research-3/allognathus/