Alcadia rufa explained

Alcadia rufa is a species of an operculate land snail, terrestrial gastropod mollusk in the family Helicinidae.

Subspecies:

• Alcadia rufa rufa (L. Pfeiffer, 1857)
• Alcadia rufa salleana (L. Pfeiffer, 1854)

Description

The height of the shell attains 6⅔ mm, its greatest diameter 13 mm.

(Original description in Latin) The shell has a somewhat conoidal-depressed shape. It is moderately solid, slightly wrinkled-striated and punctuated, shiny, and reddish. The spire is somewhat conoidal-convex with a fine apex. The shell consists of 4 whorls. The upper whorls are rather flat, while the body whorl is broad, depressed, and somewhat rounded at the periphery. The aperture is diagonal and broadly semi-oval. The columella descends vertically from the penultimate whorl, is slightly curved, and ends anteriorly in a tubercle, emitting a somewhat granular, circumscribed basal callus. The peristome is shortly expanded with a white border. The operculum is of the same color. ^[1]

Distribution

This species lives in Haiti. ^[2]

References

• Richling, I. & Glaubrecht, M. . The types of Neotropical Helicinidae (Mollusca, Gastropoda, Neritopsina) in the Malacological Collection of the Museum für Naturkunde Berlin: an annotated catalogue, with emphasis on Cuban land snails . Zoosystematics and Evolution . 2008 . 84 . 2 . 265-310.

Notes and References

1. Pfeiffer . L. . Descriptions of thirty-three new species of land-shells, from the collection of H. Cuming, Esq . Proceedings of the zoological Society of London . 1857 . 24 . 325 . 6 August 2024.
2. Espinosa, J. A. & Robinson, D. G . Annotated checklist of the terrestrial mollusks (Mollusca: Gastropoda) from Hispaniola Island. . Novitates Caribaea . 2021 . 17 . 71-146 .