Alycaeus Explained
Alycaeus is a genus of small land snails with a gill and an operculum, terrestrial gastropod mollusks in the family Alycaeidae. [1]
Description
(Original 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. [2]
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. [3]
Distribution
There are nine recognized species of Alycaeus in Peninsular Malaysia.
Species
Species within the genus Alycaeus include:
- Taxon inquirendum:
- Alycaeus huberi Thach, 2018 (uncertain: debated synonym)
- Synonyms:
- Alycaeus alticola Foon & Liew, 2017:[4] synonym of Stomacosmethis kapayanensis alticola (Foon & T.-S. Liew, 2017) (basionym)
- Alycaeus altispirus Möllendorff, 1902:[4] synonym of Stomacosmethis altispirus (Möllendorff, 1902) (unaccepted combination)
- Alycaeus balingensis Tomlin, 1948:[4] synonym of Stomacosmethis balingensis (Tomlin, 1948) (basionym)
- Alycaeus carinata Maassen, 2006:[4] synonym of Stomacosmethis carinatus (Maassen, 2006) (wrong gender agreement of specific epithet)
- Alycaeus charasensis Foon & Liew, 2017:[4] synonym of Stomacosmethis kapayanensis charasensis (Foon & T.-S. Liew, 2017) (basionym)
- Alycaeus clementsi Foon & Liew, 2017:[4] synonym of Stomacosmethis kelantanensis clementsi (Foon & T.-S. Liew, 2017) (basionym)
- Alycaeus (Dioryx) compactus Bavay & Dautzenberg, 1900: synonym of Dioryx compactus (Bavay & Dautzenberg, 1900) (original combination)
- Alycaeus costacrassa Foon & Liew, 2017:[4] synonym of Stomacosmethis kapayanensis costacrassa (Foon & T.-S. Liew, 2017) (basionym)
- Alycaeus expansus Foon & Liew, 2017:[4] synonym of Stomacosmethis kelantanensis expansus (Foon & T.-S. Liew, 2017) (basionym)
- Alycaeus galbanus Godwin-Austen, 1889: synonym of Stomacosmethis galbanus (Godwin-Austen, 1889) (original combination)
- Alycaeus globosus Adams, 1870: synonym of Pincerna globosus (H. Adams, 1871)
- Alycaeus hosei Godwin-Austen, 1889: synonym of Stomacosmethis hosei (Godwin-Austen, 1889)
- [lycaeus ikanensis'' <small>Foon & Liew, 2017</small>:<ref name="Foon 2017"/> synonym of S''tomacosmethis kapayanensis ikanensis'' <small>(Foon & T.-S. Liew, 2017)</small>
* ''Alycaeus kapayanensis'' <small>Morgan, 1885</small>:<ref name="Foon 2017"/> synonym of ''[[Stomacosmethis kapayanensis]] (de Morgan, 1885)
- Alycaeus kelantanensis Sykes, 1902:[4] synonym of Stomacosmethis kelantanensis (Sykes, 1902)
- Alycaeus kurauensis Foon & Liew, 2017:[4] synonym of Stomacosmethis kapayanensis kurauensis (Foon & T.-S. Liew, 2017)
- Alycaeus liratulus Preston, 1907:[4] synonym of Pincerna liratulus (Preston, 1907)
- Alycaeus perakensis Crosse, 1879:[4] synonym of Stomacosmethis perakensis (Crosse, 1879)
- Alycaeus regalis Foon & Liew, 2017:[4] synonym of Stomacosmethis regalis (Foon & T.-S. Liew, 2017)
- Alycaues roebeleni Möllendorff, 1894:[4] synonym of Stomacosmethis roebeleni (Möllendorff, 1894)
- Alycaeus selangoriensis Foon & Liew, 2017:[4] synonym of Stomacosmethis kapayanensis selangoriensis (Foon & T.-S. Liew, 2017)
- Alycaeus senyumensis Foon & Liew, 2017:[4] synonym of Stomacosmethis senyumensis (Foon & T.-S. Liew, 2017)
- Alycaeus thieroti Morgan, 1885:[4] synonym of Pincerna thieroti (de Morgan, 1885)
- Alycaeus virgogravida Foon & Liew, 2017:[4] synonym of Stomacosmethis kapayanensis virgogravida (Foon & T.-S. Liew, 2017)
Notes and References
- MolluscaBase eds. (2020). MolluscaBase. Alycaeus Gray, 1850. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=996197 on 2020-05-12
- https://www.biodiversitylibrary.org/page/39306790 Baird W. (1850). Nomenclature of molluscous animals and shells in the collection of the British Museum. Part I. Cyclophoridae. British Museum, London. 69 pp.
- Páll-Gergely, B., Sajan, S., Tripathy, B., Meng, K., Asami, T. & Ablett, J.D. . Genus-level revision of the Alycaeidae (Gastropoda: Cyclophoroidea), with an annotated species catalog . ZooKeys . 2020 . 981 . 29 . 10.3897/zookeys.981.53583 . free . 33199958 . 7644702 . source-attribution)
- 10.3897/zookeys.692.14706. 1313-2970. 1–81. Foon. Junn Kitt. Liew. Thor-Seng. A review of the land snail genus Alycaeus (Gastropoda, Alycaeidae) in Peninsular Malaysia. ZooKeys. 2017-11-02. 2017-08-21. 692. 29133987. 5672734. free. 2017ZooK..692....1F.
