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. It lives in Borneo.Menno Schilthuizen (2003) Sexual selection on land snail shell ornamentation: a hypothesis that may explain shell diversity. BMC Evolutionary Biology, 2003, 3:13
Its natural habitat is lowland Dipterocarp rainforest. Opisthostoma mirabile is endemic to one limestone outcrop near Suan Lamba known as 'Gomanton Hill'. 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.
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.
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