| Page last updatedWed 1 October 2025
 | The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win! 
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 Bivalvia | Unionoida | Hyrioidea | Hyriidae | Hyriinae genus Echyridella McMichael & Hiscock, 1958: species1 available nominal genus synonym | cladomics
 |  Echyridella aucklandica (Gray, 1843) syonymy (3 available, 8 total) | specimens (84)
 Range: North and South islands, New Zealand. (Australasia)
 Genbank sequences: COI
 IUCN Red List: Data Deficient (Cucumerunio websteri)
 other links:  MolluscaBase
 |  |  Echyridella menziesii (Gray, 1843) syonymy (9 available, 17 total) | specimens (364)
 Range: Widespread on the North and South islands, New Zealand. (Australasia)
 Genbank sequences: 18S, 28S, COI, COI M-type, COII, mtGenome, mtGenome M-type, ND1, other
 IUCN Red List: Least Concern, Data Deficient (Echyridella lucasi)
 other links:  MolluscaBase
 |  |  Echyridella onekaka Fenwick & Marshall, 2006 syonymy (1 available, 2 total) | specimens (7)
 Range: Southwestern South Island, New Zealand. (Australasia)
 Genbank sequences: COI
 IUCN Red List: Least Concern
 other links:  MolluscaBase
 |  | Echyridella huttoni (McMichael, 1957) (Tertiary)syonymy (2 available, 2 total) | specimens (0)
 Range: Tertiary, New Zealand. (Australasia)
 other links:  MolluscaBase
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