Opisthostoma mirabile

Opisthostoma mirabile
Drawing of the shell of Opisthostoma mirabile.
Conservation status
Critically Endangered  (IUCN 3.1) [1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Architaenioglossa
Superfamily:	Cyclophoroidea
Family:	Diplommatinidae
Genus:	Opisthostoma
Species:	O. mirabile
Binomial name
Opisthostoma mirabile E.A. Smith, 1893

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

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". IUCN Red List of Threatened Species . 2004: e.T44625A10929311. doi: 10.2305/IUCN.UK.2004.RLTS.T44625A10929311.en . Retrieved 15 November 2021.
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.