''Ringicella ringens'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

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 ...

, a terrestrial

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 includ ...

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 ...

in the family

Odontostomidae Odontostomidae 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.Breure A. S. H. & Romero P. (2012). "Support and su ...

Distribution

This species occurs in

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

. It lives on the ground. Ringicella ringens

Shell description

Thomas Wyatt (1838)Thomas Wyatt. 1838
''A Manual of Conchology: According to the System Laid Down by Lamarck, with the Late Improvements by De Blainville Exemplified and Arranged for the Use of Students''
Harper & brothers
page 109
wrote about the shell of this species (as ''Anostoma globulosa''): "Globose, with two small punctures, one on each side of the lip; slightly carinated, smooth, and white; margin reflected." The shell of this species is biconvex and solid. It is brownish-yellow in color, with a dark-brown band above the periphery, and another bordering the suture. The base of the shell is rather sparsely marked with irregular reddish-brown spots and usually has a dark stripe below the basal suture. The surface of the shell is only very slightly shiny. The last whorl is densely corrugated in a zigzag pattern, but sometimes this sculpture is almost obsolete. The shell has 4

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). Whorls in nature File:Photograph and axial plane floral d ...

. The final whorl is carinated at the periphery, and has three deep, dark-colored grooves, as well as one small one behind the lip. The

aperture In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An opt ...

of the shell is subhorizontal. It is elevated above the periphery of the shell and is obstructed by six white teeth. There are two strong lamellae on the parietal wall; these lamellae are compressed and curve upward within the aperture. The infraparietal lamella is stouter and straight. The outer lip of the peristome is broad, expanded and reflexed. It is white in color, its upper end perforated by an oval hole. The outer margin of the peristome has four long folds within it, of which the columellar and the lower and upper palatal are subequal, the inner end of the latter being strongly bent upward. The suprapalatal fold is smaller and oblique, almost transverse. Above it is a small upper superpalatal fold, which has united with the angle-lamella to form the wall of the respiratory foramen, perforating the end of the lip. The width of adult shells is 18–25 mm, the height is 10.5–13 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 114-115.

References

This article incorporates public domain text from references

External links

Two photos of one shell of ''Ringicella ringens''
{{DEFAULTSORT:Ringicella Ringens Odontostomidae

Distribution

Shell description

References

Further reading

External links