Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Delphinonaias

Morelet, 1849. Test. Nov. 1: 30.
Type(s): LECTOTYPE [AS HOLOTYPE] BMNH_1893-2-4-2014 (by R.I. Johnson, 1971: 93), S. Geronimo, Yucatan, Mexico.
Lampsilis (Proptera) scutulatus — Simpson (1900)
Unio (Metaptera) scutulatus — Martens (1900)
Lampsilis (Proptera) scutulata — Simpson (1914)
Lampsilis (Delphinonaias) scutulata — Frierson (1927)
Lampsilis (Phyllonaias) scutulata — Haas (1969)
Delphinonaias scutulata — Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Czaja et al. (2023), Cummings et al. (2025)
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 561, pl. 59, fig. 5.
(intro'd as intra-sp. of Unio scutulatus Morelet, 1849)
Type(s): LECTOTYPE BMNH_1893-2-4-2017-2018 (by Cummings et al., 2025: 168), S. Geronimo, Yucatan, Mexico.
Unio (Metaptera) scutulatus — Martens (1900)
Delphinonaias scutulata — Cummings et al. (2025)

Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 561, pl. 59, fig. 6.
(intro'd as intra-sp. of Unio scutulatus Morelet, 1849)
Type(s): LECTOTYPE BMNH_1893-2-4-2016 (by Cummings et al., 2025: 168), S. Geronimo, Yucatan, Mexico.
Unio (Metaptera) scutulatus — Martens (1900)
Delphinonaias scutulata — Cummings et al. (2025)
Lampsilis (Proptera) scutulatus — Simpson (1900)
Unio (Metaptera) scutulatus — Martens (1900)
Lampsilis (Proptera) scutulata — Simpson (1914)
Lampsilis (Delphinonaias) scutulata — Frierson (1927)
Lampsilis (Phyllonaias) scutulata — Haas (1969)
Delphinonaias scutulata — Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Czaja et al. (2023), Cummings et al. (2025)