Bivalvia | Unionida | Hyrioidea | Hyriidae | Hyriinae
3 Recent freshwater species (4 total species)
McMichael & Hiscock, 1958. Austral. J. Mar. Frwtr. Res. 9(3): 459.
(intro'd as sub-gen. of Hyridella Swainson, 1840)
Type species: Unio menziesii Gray, 1843 (orig. desig.) = Echyridella menziesii
The Taxonomic History lists the ways authors have classified the species currently assigned to Echyridella, since 1900.
Diplodon (Hyridella s.s.) — Simpson (1900), Simpson (1914)
Diplodon (Hyridella sec. Cucumaria) — Simpson (1914)
Hyridella — McMichael (1957), Graf & Ó Foighil (2000), Bogan & Hoeh (2000), Walker et al. (2001), Hoeh et al. (2001), ... Bogan (2010), Breton et al. (2011), Mitchell et al. (2016), Guerra et al. (2017), Huang et al. (2018)
Velesunio — McMichael (1957)
Hyridella (s.s.) — McMichael & Hiscock (1958), Ponder (1964), Haas (1969), Graf & Cummings (2007)
Hyridella (Echyridella) — McMichael & Hiscock (1958), Ponder (1964), Haas (1969), Santos-Neto et al. (2016), Wu et al. (2023)
Cucumerunio — McMichael & Hiscock (1958), Ponder (1964), Walker et al. (2001), Fenwick & Marshall (2006), Graf & Cummings (2007), Bogan (2010), IUCN (2013)
Echyridella — Fenwick & Marshall (2006), Graf & Cummings (2007), Bogan (2010), IUCN (2013), Walker et al. (2014), ... Wu et al. (2021), Wu et al. (2022), Wu et al. (2024), Dai et al. (2025), Chen et al. (2025)