Hyriidae

Hyriidae is a taxonomic family of pearly freshwater mussels, aquatic bivalve molluscs in the order Unionida. This family is native to South America, Australia, New Zealand and New Guinea.^[1] Like all members of that order, they go through a larval stage that is parasitic on fish (see glochidium).

Hyriidae
External view of two valves of Diplodon granosus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Unionida
Superfamily:	Hyrioidea Swainson, 1840
Family:	Hyriidae Swainson, 1840
Genera
See text

The classification recognized by Banarescu (1995)^[2] uses three subfamilies. This family contains eighteen genera.

Subfamilies and genera

Hyriinae

Genera within the subfamily Hyriinae, from South America, include:

• Paxyodon
• Castalina
• Chevronaias

Tribe Castaliini

• Castalia
• Castaliella
• Callonaia

Tribe Hyriini

• 

  Prisodon obliquus in Brazil

  Prisodon
• Triplodon

Tribe Rhipidodontini

• Diplodon

Cucumerunioninae

Genera within the subfamily Cucumerunioninae, from Australasia, include:

• Echyridella
• Cucumerunio
• Hyridella
• Virgus

Velesunioninae

Genera within the subfamily Velesunioninae, from Australasia, include:^{[citation needed]}

• Alathyria
  • Alathyria jacksoni, the river mussel (or black river mussel^[3]) occurs in South Australia.^[4]
• Haasodonta
• Lortiella
• Microdonta
• Velesunio
• Westralunio