Opisthostoma mirabile

Opisthostoma mirabile is a species of air-breathing land snail with an operculum, a terrestrial gastropod mollusk in the family Diplommatinidae.

Opisthostoma mirabile
Drawing of the shell of Opisthostoma mirabile.

Critically Endangered  (IUCN 3.1)[1]
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
Superfamily:
Cyclophoroidea
Family:
Diplommatinidae
Genus:
Opisthostoma
Species:
O. mirabile
Binomial name
Opisthostoma mirabile
E.A. Smith, 1893

Distribution

It is endemic to the Kinabatangan Valley, Sabah, Malaysia.[1] It lives in Borneo.[2]

Its natural habitat is lowland Dipterocarp rainforest. Opisthostoma mirabile is endemic to one limestone outcrop near Suan Lamba known as 'Gomanton Hill'[3]. Subpopulations existed in two smaller limestone outcrops. This species is absent in surrounding non-calcareous regions, and therefore restricted to 1.5 km2 of limestone hills[1].

Threats

It is threatened by habitat loss- limestone quarrying has extirpated Opisthostoma mirabile from the two lesser outcrops, and fire near the outcrops has caused forest desiccation which has led to a decline in Prosobranch populations.[1]

References
  1. Schilthuizen, M. & Vermeulen, J. 2004. Opisthostoma mirabile. 2006 IUCN Red List of Threatened Species. Downloaded on 07 August 2007.
  2. Menno Schilthuizen (2003) Sexual selection on land snail shell ornamentation: a hypothesis that may explain shell diversity. BMC Evolutionary Biology, 2003, 3:13 doi:10.1186/1471-2148-3-13
  3. "Taxon Pages | Opisthostoma and Plectostoma (Family Diplommatinidae)". opisthostoma.myspecies.info. Retrieved 17 July 2018.


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