Opisthostoma otostoma Boettger, 1893

Sabah karst snail



Taxonomy & Nomenclature



Conservation Status


Last record: 1960's or before?

IUCN RedList status: Critically Endangered (Possibly Extinct)



Islets around the island of Labuan, off Sabah, Malaysia


Biology & Ecology










Original scientific description:

Boettger, O. 1893. Drei neue Pneumonopomen aus Borneo. Deutsch. Malakozool. Gesellschaft 25: 194-197.


Other references:

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.

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

Schilthuizen, M. and Vermeulen, J. (2004). Opisthostoma otostoma. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. ( Downloaded on 24 July 2013.

Vermeulen, J. J. (1994). Notes on the non-marine molluscs of the island of Borneo. 6. The genus Opisthostoma (Gastropoda Prosobranchia: Diplommatinidae), part 2. Basteria 58: 75-191.


<< Back to the Caenogastropoda database