Diplommatina cacuminulus is a species of land snail with an operculum, terrestrial gastropod mollusc in the family Diplommatinidae.
Distribution This species is endemic to Malaysia. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
References
Vermeulen, J.J. (1993). Notes on the non-marine molluscs of the island of Borneo 5. The genus Diplommatina (Gastropoda Prosobranchia Diplommatinidae). Basteria. 57: 3-69. Leide