''Boucardicus ambindaensis'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

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 ...

with an operculum, a

terrestrial Terrestrial refers to things related to land or the planet Earth, as opposed to extraterrestrial. 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 o ...

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusc Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum ...

in the family

Alycaeidae Alycaeidae is a taxonomic family of small to large tropical land snails with an operculum, terrestrial gastropod mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). ...

. This species 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 ...

Madagascar Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, f ...

, occurs in Tsingy Beanka reserve, around 50 km east of

Maintirano Maintirano is a coastal city, urban municipality, and Catholic bishopric in western Madagascar approximately 325 kilometres west of the capital Antananarivo. It belongs to the Districts of Madagascar, district of Maintirano District, Maintirano, w ...

city.

Etymology

From occurrence near Ambinda village.

Shell description

Shell Shell may refer to: Architecture and design * Shell (structure), a thin structure ** Concrete shell, a thin shell of concrete, usually with no interior columns or exterior buttresses Science Biology * Seashell, a hard outer layer of a marine ani ...

is pupilloid-like, almost smooth (with weak radial lines), aperture is almost round, with single columellar lamella relatively deep in aperture that goes through almost whole body-whorl inside it and single palatal lamella in the begging of body-whorl (could be visible through wall of shell). Basal peristome is almost complete, slightly reflected. Height of shell 2.4–2.5 mm, diameter 1.2–1.3 mm.

References

Boucardicus Molluscs of Madagascar Gastropods described in 2015 Endemic fauna of Madagascar {{Cyclophoridae-stub