Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini

genus Actinonaias Crosse & Fischer, 1894: synonymy

5 Recent freshwater species (8 total species)

Synonymy

Actinonaias Fischer & Crosse, 1894

(intro'd as sub-gen. of Unio Retzius, 1788)
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 556.
Type species: Unio sapotalensis Lea, 1841 (orig. desig.) = Actinonaias sapotalensis

Graphonaias Fischer & Crosse, 1894

(intro'd as sub-gen. of Unio Retzius, 1788)
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 557.
Type species: Unio medellinus Lea, 1838 (orig. desig.) = Actinonaias medellina

Actionaias Ortmann, 1925

(error for Actinonaias Fischer & Crosse, 1894)
Ortmann, 1925. Amer. Midl. Nat. 9: 349.
Type species: Unio sapotalensis Lea, 1841 = Actinonaias sapotalensis

Graptonaias Haas, 1969

(error for Graphonaias Fischer & Crosse, 1894)
Haas, 1969. Treatise on Invert. Paleo 1: N425.
Type species: Unio medellinus Lea, 1838 = Actinonaias medellina

Taxonomic History (since 1900)

The Taxonomic History lists the ways authors have classified the species currently assigned to Actinonaias, since 1900.

Lampsilis (Proptera) — Simpson (1900), Simpson (1914)
Nephronaias — Simpson (1900), Ihering (1901), Ortmann (1912), Simpson (1914), Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Cummings et al. (2025)
Unio (Simonaias) — Martens (1900)
Unio (Lampsilis) — Martens (1900)
Unio (Elliptio) — Martens (1900)
Lampsilis — Pilsbry (1910), Simpson (1914)
Actinonaias — Frierson (1917), Thiele (1934), Modell (1957), Haas (1969), Haas (1969), Graf & Cummings (2007), Bogan (2010), Bogan (2013), Graf & Cummings (2021), Czaja et al. (2023), Cummings et al. (2025)
Lampsilis (Actinonaias) — Frierson (1927), Haas (1929)
Lampsilis (Cyrtonaias) — Frierson (1927), Haas (1969)
Lampsilis (Friersonia) — Haas (1929)
Elliptio (Nephronaias) — Haas (1929)
Unio — Henderson (1935)
Nephronaias (s.s.) — Haas (1969)
Villosa — Johnson (1981)