Australasia
The Australasian Region includes Australia, New Guinea and New Zealand. Only 31 species (10 genera) are currently recognized in the region in two families: Hyriidae and Unionidae.
We divide the Australasian Region into four subregions that largely correspond to areas of freshwater mussel endemism. The Eastern Subregion (AU1; 4 gen, 14 spp.) includes much of the eastern half of Australia (including Tasmania); the Western Subregion (AU2; 3 gen, 7 spp.) is the western half of that continent. New Guinea (AU3; 7 gen, 11 spp.) has a somewhat diverse freshwater mussel fauna (especially considering the amount of suitable habitat), but that assemblage is poorly understood. The subregion includes Misool and the Solomons islands. Finally, there is New Zealand (AU4; 1 gen, 3 spp.).
Endemic species are marked with an asterisk (*). Eastern Subregion (AU1)
Western Subregion (AU2)
New Guinea Subregion (AU3)
New Zealand Subregion (AU4)
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