''Ayna'' is a

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of air-breathing

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

terrestrial Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

s in the family

Enidae Enidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks. MolluscaBase eds. (2020). MolluscaBase. Enidae B. B. Woodward, 1903 (1880). Accessed through: World Register of Marine Species at: http://www.marinespecies ...

. The sole species in the genus is ''Ayna mienisi''. It was described as ''Zebrina'' (''Ramusculus'') ''mienisi''. The genus ''

Ramusculus ''Ramusculus'' is a monotypic genus of air-breathing land snails, terrestrial gastropod mollusks in the family Enidae. The sole species lives in the Crimean Peninsula. The only species belonging to ''Ramusculus'' is ''Bulimus subulata'' ( Ros ...

'' however is a monotypic genus only distantly related to ''Ayna''. The closest relative of ''Ayna'' is probably ''

Clausilioides ''Clausilioides'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Enidae. This species in this genus are obligate rock-dwellers that inhabit a limited area in northeastern Turkey Turkey ( ...

''. ''A. mienisi'' is a chirally enantiomorphic species. This means that some specimens have sinistral (left-coiled), others dextral (right-coiled) shells. The sinistral and dextral specimens form "clear" populations but can by found

sympatric In biology, two related species or populations are considered sympatric when they exist in the same geographic area and thus frequently encounter one another. An initially interbreeding population that splits into two or more distinct species sh ...

ally as well. The sinistral specimens were described as a species (''Ramusculus laevitortus'' Schütt, 1995) differs from the dextral ''Ramusculus mienisi''. The species inhabits a relatively small area in

Erzurum Province Erzurum Province ( tr, Erzurum ili) is a province of Turkey in the Eastern Anatolia Region of the country. The capital of the province is the city of Erzurum. It is bordered by the provinces of Kars and Ağrı to the east, Muş and Bingöl to the ...

, northeastern

Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...

References

Enidae Endemic fauna of Turkey Monotypic gastropod genera Gastropods described in 1986 {{Enidae-stub