Allognathus hispanicus

Allognathus hispanicus
	Aperture view of the shell of Allognathus hispanicus
Conservation status
	; Least Concern (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia; clade Euthyneura; clade Panpulmonata; clade Eupulmonata; clade Stylommatophora; informal group Sigmurethra
Superfamily:	Helicoidea
Family:	Helicidae
Genus:	Allognathus
Species:	A. hispanicus
Binomial name
	Allognathus hispanicus; (Rossmässler, 1838)
Synonyms
	Helix hispanica Rossmässler, 1838; Helix balearica Rossmässler, 1838 (in syn.); Iberellus balearicus Rossmässler, 1838;

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 it shell.

The snail lives in cracks in rocks and walls, and is only active when it rains.[1]

Description

Globose-flatenned shell with 4 ½ whorls with a clear suture and thin and irregular striation. 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 completely closed.[2]

Allognathus hispanicus Puíg de la Verge, Pollença (Mallorca). Scale bar 1 cm.

Distribution

The species is distributed along the northern Tramuntana Mountains in western Mallorca, cohabiting in many localities with A. graellsianus.[2][3]

gollark: Which probably means high premiums, which means people won't buy it and then complain when something bad happens.

gollark: Pandemic insurance which didn't run on the government strategy of "just borrow tons of money and hope it doesn't break things" would need lots of money saved.

gollark: Same here with "national insurance", allegedly, but it just goes into the main government moneypile.

gollark: They give you money if you're unemployed *maybe* subject to some preconditions because government, and you *maybe* pay taxes (here, people below a certain income don't).

gollark: It doesn't actually work like that exactly.

References

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.
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.

External links

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

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[iucn-1] 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.

[:0-2] 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.

[3] 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.