Aaadonta irregularis Semper, 1874



Taxonomy & Nomenclature

Synonym/s: Endodonta irregularis Semper, 1874; Helix (Endodonta) irregularis Semper, 1874


Conservation Status

Last record: 1936 (Solem, 1976)

Rediscovered in 2007 (Rundell, 2012) or 2018 (Bullis)

IUCN RedList status: Critically Endangered



Palau, Caroline Islands


Biology & Ecology










Original scientific description:

Semper, C. (1874). Landmollusken. Reisen im Archipel der Philippinen 2(3): 129-168.


Other references:

Rundell, Rebecca J. (2005). The Land Snails of Belau: Survey of the 16 States. Report. Distributed to Federal, State and Local Governments and NGOs, Republic of Palau. 19 pp. [automatic download]

Rundell, Rebecca J. (2012). Aaadonta irregularis. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. ( Downloaded on 02 June 2013.

Solem, A. (1976). Endodontoid land snails from Pacific islands (Mollusca: Pulmonata: Sigmurethra). Part I. Family Endodontidae. Field Museum of Natural History, Chicargo.


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