Notes on the non-marine molluscs of the island of Borneo 5. The genus Diplommatina (Gastropoda Prosobranchia: Diplommatinidae)

The species of the genus Diplommatina (Diplommatinidae) occurring on Borneo are revised. Fifty species and two subspecies have been found; twenty four species and both subspecies are new. Most species are endemic to Borneo. It is argued that, for the time being, the genus Diplommatina is best not split up in smaller genera. As a whole it is probably monophyletic.