Alycaeus


Alycaeus is a genus of small land snails with a gill and an operculum, terrestrial gastropod mollusks in the family Alycaeidae.

Description

The operculum is horny with multiple whorls. The conical shell has a regular spire. The body whorl is distorted and compressed and significantly contracted before the aperture. The aperture is circular, with a regularly reflexed peristome.
The protoconch sculpture is smooth to obliquely striated. The diameter of the shell varies between 8 mm and 15 mm. The central tooth of the radula consists of five broad cusps with the central cusp blunt.

Distribution

There are nine recognized species of Alycaeus in Peninsular Malaysia.

Species

Species within the genus Alycaeus include:Alycaeus conformis Fulton, 1902Alycaeus eydouxi Venmans, 1956Alycaeus gibbosulus Stoliczka, 1872Alycaeus goliath Páll-Gergely, 2023Alycaeus himalayae Aravind & Páll-Gergely, 2023Alycaeus jousseaumei Morgan, 1885Alycaeus pyramidalis W. H. Benson, 1856Alycaeus rolfbrandti Maassen, 2006Alycaeus somwangi Dumrongrojwattana & Maassen, 2008
;Taxon inquirendum:Alycaeus huberi Thach, 2018
;Synonyms:Alycaeus alticola Foon & Liew, 2017: synonym of Stomacosmethis kapayanensis alticola Alycaeus altispirus Möllendorff, 1902: synonym of Stomacosmethis altispirus Alycaeus balingensis Tomlin, 1948: synonym of Stomacosmethis balingensis Alycaeus carinata Maassen, 2006: synonym of Stomacosmethis carinatus