''Leiostyla corneocostata'' is a species of

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 molluscs, terrestrial gastropod mollusks that have gastropod shell, shel ...

in the family Lauriidae known commonly as the Madeiran land snail. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to Porto Santo Island in the Madeira archipelago. This species is limited to a range of about 6 square kilometers on a single island. It lives in coastal habitat in the sea spray zone where it lives in rock cracks and under vegetation. The population is likely stable, but the species is threatened by development of the beach areas near its habitat.

References

Endemic fauna of Madeira Molluscs of Madeira Leiostyla Gastropods described in 1878 Taxonomy articles created by Polbot Habitats Directive species {{Pupillidae-stub