Unionoida cum Grano Salis

Page last updated
9 August 2018

Unionoida cum Grano Salis

Australasian Region

Australasian SubregionsThe Australasian Region includes Australia, New Guinea and New Zealand. Only 30 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; 5 genera, 14 spp.) includes much of the eastern half of Australia (including Tasmania); the Western Subregion (AU2; 3 genera, 6 spp.) is the western half of that continent. New Guinea (AU3; 7 genera, 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; 3 species in 1 genus).

Endemic species are marked with an asterisk (*).

Eastern Subregion (AU1)
  1. Alathyria condola*
  2. Alathyria jacksoni*
  3. Alathyria pertexta
  4. Alathyria profuga*
  5. Cucumerunio novaehollandiae*
  6. Hyridella australis*
  7. Hyridella depressa*
  1. Hyridella drapeta*
  2. Hyridella glenelgensis*
  3. Hyridella narracanensis*
  4. Velesunio ambiguus*
  5. Velesunio angasi
  6. Velesunio moretonicus*
  7. Velesunio wilsonii
Western Subregion (AU2)
  1. Lortiella froggatti*
  2. Lortiella opertanea*
  3. Lortiella rugata*
  1. Velesunio angasi
  2. Velesunio wilsonii
  3. Westralunio carteri*
New Guinea Subregion (AU3)
  1. Alathyria pertexta
  2. Haasodonta fannyae*
  3. Haasodonta vanheurni*
  4. Hyridella guppyi*
  5. Hyridella misoolensis*
  6. Microdontia anodontaeformis*
  1. Velesunio sentaniensis*
  2. Velesunio wilsonii
  3. Virgus beccarianus*
  4. Westralunio albertisi*
  5. Westralunio flyensis*
New Zealand Subregion (AU4)
  1. Echyridella aucklandica*
  2. Echyridella menziesii*
  1. Echyridella onekaka*


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