Ayna

{{Short description|Genus of gastropods}}

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{{Speciesbox

| name = Ayna

| display_parents = 2

| parent_authority = Páll-Gergely, 2009Páll-Gergely (2009). "Revision of the Turkish Ramusculus taxa with description of Ayna gen. nov. (Gastropoda: Pulmonata: Enidae)". Journal of Conchology 40(1): 73–77.

| taxon = Ayna mienisi

| authority = (Gittenberger, 1986)

}}

Ayna is a monotypic genus of air-breathing land snails, terrestrial gastropod mollusks in the family Enidae. The sole species in the genus is Ayna mienisi.{{cite journal|last=Gittenberger|first=Edmund|title=Two new species of Enidae (Mollusca Gastropoda: Pupillacea) from Turkey|journal=Zoologische Mededelingen|year=1986|volume=60|issue=13|pages=209–216}} It was described as Zebrina (Ramusculus) mienisi. The genus Ramusculus however is a monotypic genus only distantly related to Ayna. The closest relative of Ayna is probably Clausilioides.

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 sympatrically 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, northeastern Turkey.