Allognathus is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Helicidae, the true snails. The genus is endemic to the Balearic Islands (Western Mediterranean) being present in all major islands and in several small islets.[2] The genus colonized the archipelago from the south-eastern Iberian Peninsula during the Middle Miocene, throughout a land-bridge connection. The different species belonging to Allognathus live in crevice rocks or under stones.
| Allognathus | |
|---|---|
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| Apertural view of the shell of Allognathus graellsianus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Helicidae |
| Subfamily: | Helicinae |
| Tribe: | Allognathini |
| Genus: | Allognathus Pilsbry, 1888[1] |
| Synonyms | |
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Iberellus Hesse, 1908 | |
For some authors,[3] Allognathus include two subgenus, Allognathus s. str., that is monospecific, and Iberellus Hesse 1908, that includes at least two species.
Species
editSpecies within the genus Allognathus include:[2][3]
- Allognathus campanyonii (Rossmässler, 1839)
- Allognathus graellsianus (Pfeiffer, 1848) - type species
- Allognathus hispanicus (Rossmässler, 1838)
References
edit- ^ Tryon G. W. & Pilsbry H. A. 1888. Manual of Conchology; structural and systematic. Second Series: Pulmonata, 4. Helicidae. Vol. II., 296 pp., Plates 1-69. Philadelphia.
- ^ a b Chueca, Luis J.; Madeira, María José; Gómez-Moliner, Benjamín J. (October 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.
- ^ a b Chueca, Luis J.; Forés, Maximino; Gómez-Moliner, Benjamín (2013). "Consideraciones nomenclaturales sobre las especies del género Allgonathus (Gastropoda: Pulmonata: Helicidae) y estudio anatómico de Allognathus hispanicus tanitianus". Iberus. 31: 63–74.
- Bank, R. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16, 2017.
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