Allognathus hispanicus (now known as Allognathus balearicus) is a species of land snail in the family Helicidae, the true snails. This species is endemic to Mallorca, one of Spain's Balearic Islands.[1] The common name is "caragol de Serp" (snake snail), due to the pattern of its shell.
| Allognathus hispanicus | |
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| Aperture view of the shell of Allognathus hispanicus | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Helicidae |
| Genus: | Allognathus |
| Species: | A. hispanicus
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| Binomial name | |
| Allognathus hispanicus (Rossmässler, 1838)
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| Synonyms | |
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The snail lives in cracks in rocks and walls, and is only active when it rains.[1]
Description
editGlobose-flatenned shell with 4 ½ whorls with a clear suture and thin and irregular striation. The last whorl 3 times larger than the penultimate, growing progressively to the aperture. The aperture is oblique-oval descending from the third to the fourth whorl. Soft peristome with a brownish inner lip slightly reflected. Umbilicus is completely closed.[2]
Distribution
editThe species is distributed along the northern Tramuntana Mountains in western Mallorca, cohabiting in many localities with A. graellsianus.[2][3]
References
edit- ^ a b c Gómez Moliner, B.J. 2011. Allognathus hispanicus. The IUCN Red List of Threatened Species 2011: e.T156607A4971951. https://doi.org/10.2305/IUCN.UK.2011-1.RLTS.T156607A4971951.en. Downloaded on 9 April 2019.
- ^ a b 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.
- ^ Chueca, Luis J.; Madeira, María José; Gómez‐Moliner, Benjamín J. (2015). "Biogeography of the land snail genus Allognathus (Helicidae): middle Miocene colonization of the Balearic Islands". Journal of Biogeography. 42 (10): 1845–1857. doi:10.1111/jbi.12549. ISSN 1365-2699.