The Recently Extinct Plants and Animals Database

Achatinella dimorpha Gulick, 1858

Two-morphed Oahu tree-snail



Taxonomy & Nomenclature

Synonym/s: Achatinella albescens Gulick; Achatinella zonata Gulick; Achatinella contracta Gulick


Conservation Status

Last record: 1967

IUCN RedList status: Extinct



Oahu, Hawaiian Islands, USA


Biology & Ecology










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.

Mollusc Specialist Group. (1996). Achatinella dimorpha. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.1. ( Downloaded on 19 September 2011.

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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