''Ringicella carinatum'' 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), ...

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

, 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 ...

pulmonate Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group inclu ...

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 ...

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

in the subfamily

Bulimulinae Bulimulidae is a taxonomic family of medium-sized to large, air-breathing, tropical and sub-tropical land snails, terrestrial pulmonate gastropod molluscs in the superfamily Orthalicoidea.MolluscaBase eds. (2020). MolluscaBase. Bulimulidae Tryon ...

, in the family

Odontostomidae Odontostomidae is a Taxonomy (biology), taxonomic family (biology), family of medium-sized to large, air-breathing, tropical and sub-tropical land snails, Terrestrial animal, terrestrial pulmonate gastropod Mollusca, molluscs in the superfamily O ...

Distribution

This species occurs in

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

. Pilsbry (1901) mentioned ''Ringicella carinatum'' as also occurring in

Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel ...

, in

high forest A high forest is a type of forest originated from seed or from planted seedlings. In contrast to a low forest (also known as a coppice forest), a high forest usually consists of large, tall mature trees with a closed canopy. High forests can occu ...

s of the

Magdalena river The Magdalena River (, ; less commonly ) is the main river of Colombia, flowing northward about through the western half of the country. It takes its name from the biblical figure Mary Magdalene. It is navigable through much of its lower reaches, ...

basin at 1830 m (6000 feet) above sea level, but Vera Ardila (2008) considers the presence of the species in Colombia to be doubtful.Mónica Lucía Vera Ardila. 2008
''Lista de los géneros de moluscos terrestres de Colombia (Mollusca: Gastropoda: Prosobranchia: Mesogastropoda y Pulmonata: Stylommatophora)''
Biota Colombiana 9 (1): 39-62.

Shell description

The

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 ...

of this species has a long basal suture. It is conoid-lenticular, rather solid, acutely carinate. It is pale in color, narrowly banded with chestnut above the keel and at the suture. The

spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spire ...

is shortly conoid in shape. The shell has 5

whorls A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). In nature File:Photograph and axial plane floral diagram ...

which are rather flattened; the upper ones are striatulate, the final whorl with irregular and waved rib-striae. The base of the shell is convex, spotted with chestnut, scrobiculate in front. The shell

aperture In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image o ...

follows the slope of the spire, is semicircular, and is contracted by six strong, curved lamellae. The peristome is white, broadly expanded and reflexed. The right margin of the peristome is provided with a large foramen at its insertion point. The width of adult shells is 24.5 mm, the height is 13 mm. Pilsbry H. A. 1901. in Tryon G. W. & Pilsbry H. A. 1901-1902
''Oriental Bulimoid Helicidae. Odontostominae. Cerionidae'' Volume 14
Manual of Conchology. Second series: Pulmonata. page 115-116.

References

This article incorporates public domain text from the reference

External links

* Four views of one shell of ''Ringicella carinata''

{{Taxonbar, from=Q7334891 Odontostomidae Gastropods described in 1853