Auriculella uniplicata is a species of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks, belonging to the family Achatinellidae.
Description The length of the shell attains 7 mm, its diameter 4 mm.
(Original description in French) The shell is solid and characterized by an oval-elongated shape, featuring a distinct umbilical perforation. This species is polymorphic in its coiling, appearing indifferently as either dextral or sinistral. This is a fascinating biological detail.
The spire is conic and terminates in a slightly obtuse summit, with a well-marked suture. There are six whorls, which are plano-convex in profile and finely striated in a longitudinal direction. The aperture is slightly oblique and takes a truncated-oval form.
The peristome is strongly thickened, and its margins are joined above the body whorl by a callous deposit. The parietal margin is equipped with a thin lamella, while the columellar margin remains simple, entirely lacking any kind of lamella or fold. Regarding its coloration, the shell is yellowish or light brown, accented by a transverse band of a darker shade.
Distribution This species is endemic to Hawaii, United States.
References
Cowie, R. H., Evenhuis, N. L. & Christensen, C. C. (1995). Catalog of the native land and freshwater molluscs of the Hawaiian Islands. vi + 248 pp. Leiden: Backhuys Publishers.
External links Pilsbry, H. A. & Cooke, C. M. (1914-1916). Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 23: Appendix to Amastridae, Tornatellinidae, Index to vols. XXI-XXIII. pp. i-xi, 1-302, pls 1-55. Philadelphia, published by the Conchological Department, Academy of Natural Sciences. p. 108