Ogasawarana rex (Wagner, 1909)



Taxonomy & Nomenclature

Synonym/s: Helicina ogasawarana rex Wagner, 1909 (protonym); Ogasawarana rex Minato, 1980 (junior homonym and synonym)


Conservation Status


IUCN RedList status: Critically Endangered



Ogasawara Islands, Japan


Biology & Ecology










Original scientific description:

Wagner, A. J. (1907-1911). Die Familie der Helicinidae. Systematisches Conchylien-Cabinet von Martini und Chemnitz, Neue Folge 1 (18)[(2)]:1-391, pls. 1-70.


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.

Callomon, Paul. (2015). On the authorship and types of three Ogasawara helicinids (Mollusca: Gastropoda). Proceedings of the Academy of Natural Sciences of Philadelphia 164(1): 21-29.

Cowie, Robert H., Régnier, Claire, Fontaine, Benoît, and Bouchet, Philippe. (2017). Measuring the Sixth Extinction: what do mollusks tell us? The Nautilus 131(1): 3-41.

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

Iwakawa, T. (1919). Catalogue of the Japanese Mollusca in the Natural History Department, Tokyo Imperial Museum. 2+3+318+595+39 pp. Tokyo, Imperial Museum.

Minato, Hiroshi. (1980). Helicinidae of the Ogasawara Islands, with the descriptions of five new species. Venus, 38(4): 235-246.

Mollusc Specialist Group. (1996). Ogasawarana rex. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. ( Downloaded on 20 April 2014.

MolluscaBase eds. (2021). MolluscaBase. Ogasawarana rex (A. J. Wagner, 1909). Accessed at: on 2022-04-23

Régnier, Claire, Fontaine, Benoît and Bouchet, Philippe. (2009). Not Knowing, Not Recording, Not Listing: Numerous Unnoticed Mollusk Extinctions. Conservation Biology 23(5): 1214-1221.


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