Delos oualanensis (Pease, 1866)



Taxonomy & Nomenclature

Synonym/s: Helix oualanensis Pease, 1866 (original combination); Charopa ualanensis Möllendorff, 1900 [unjustified emandation]


Conservation Status

Last record: 1930's

Rediscovered in ?

IUCN RedList status: Data Deficient



Kosrae, Caroline Islands


Biology & Ecology










Original scientific description:

Pease, W. H. (1866). Descriptions of new species of land shells, inhabiting Polynesia. American Journal of Conchology 2(4): 289-293, pl. 20, fig. 1.


Other references:

Baillie, J. and Groombridge, B. (eds). (1996). 1996 IUCN Red List of Threatened Animals. pp. 378. International Union for Conservation of Nature, Gland, Switzerland and Cambridge, UK.

Groombridge, B. (ed.). (1994). 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

Mollusc Specialist Group. (1996). Delos oualanensis. The IUCN Red List of Threatened Species 1996: e.T6333A12658337. Downloaded on 24 January 2016.

MolluscaBase eds. (2021). MolluscaBase. Delos oualanensis (Pease, 1866). Accessed at: on 2022-04-03

Rundell, Rebecca J. and Czekanski-Moir, Jesse E. (2015). A Survey of the Land Snails of Kosrae (Caroline Islands, Micronesia) Including the Rediscovery of Endemic Delos oualanensis (Pease, 1866) (Mollusca: Pulmonata: Rhytididae). Malacologia 59(1): 13-20. [Abstract]


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