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Page last updated
Thu 17 July 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!


Bivalvia | ... | Hyriidae | Hyriinae | Rhipidodontini | Diplodon

species Diplodon gratus (Lea, 1860): synonymy
     104 specimens

Unio gratus Lea, 1860
Lea, 1860. Proc. Acad. Nat. Sci. 12: 91.
Lea, 1863. Jour. Acad. Nat. Sci. 5 [O. 10]: 382 [18], pl. 43, fig. 290.
Type(s): HOLOTYPE USNM_85784, Uruguay R., S. Amercia.

Diplodon (Cyclomya s.s.) gratusSimpson (1900)
Diplodon (Cyclomya s.s.) fontainianus var. gratusSimpson (1914)
Diplodon (s.s.) gratusOrtmann (1921), Morretes (1949)
Diplodon (Cyclomya) paranensis funebralisHaas (1931)
Diplodon (Rhipidodonta) charruanusBonetto (1964), Bonetto (1965), Figueiras (1965), Bonetto & Mansur (1970)
Diplodon rotundus gratusParodiz (1968), Mansur (1970)
Diplodon (Rhipidodonta) paranensis funebralisHaas (1969)
Rhipidodonta grataSimone (2006), Graf & Cummings (2007), Bogan (2010)
Diplodon grataITIS (2013)
Diplodon gratusMiyahira et al. (2019), Graf & Cummings (2021)

Unio rufofuscus Lea, 1865
Lea, 1865. Proc. Acad. Nat. Sci. 17: 76.
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 282, pl. 39, fig. 96.
Type(s): HOLOTYPE USNM_84101, [no locality available - South America].

Diplodon (s.s.) rufofuscusSimpson (1900), Simpson (1914)
Diplodon (Cyclomya) fontainianusHaas (1931)
Diplodon (s.s.) granosus multistriatusBonetto (1964)
Diplodon rotundus gratusParodiz (1968), Mansur (1970)
Diplodon (Rhipidodonta) fontainianusHaas (1969)
Diplodon rufofuscusMiyahira et al. (2019)

Diplodon (Cyclomya s.s.) fontainianus var. deceptus Simpson, 1914
Simpson, 1914. Descr. Cat. Naiades: 1281.
(intro'd as intra-sp. of Unio fontainiana d’Orbigny, 1835)

Diplodon (Cyclomya s.s.) fontainianus var. deceptusSimpson (1914)
Diplodon (s.s.) deceptusOrtmann (1921), Morretes (1949)
Diplodon (Cyclomya) paranensis funebralisHaas (1931)
Diplodon (s.s.) delodontus expansusBonetto (1964)
Diplodon (Rhipidodonta) funebralisFigueiras (1965)
Diplodon rotundus gratusParodiz (1968), Mansur (1970)
Diplodon (Rhipidodonta) paranensis funebralisHaas (1969)
Diplodon (s.s.) delodontus wimanii [sic]Bonetto & Mansur (1970)
Diplodon deceptusMansur et al. (1988), Bogan & Hoeh (2000), Hoeh et al. (2001), Hoeh et al. (2002), Baker et al. (2003), Roe & Hoeh (2003), Baker et al. (2004), Walker et al. (2006), Hoeh et al. (2009), Marshall et al. (2014), Zieritz et al. (2015), Santos-Neto et al. (2016)
Diplodon rotundusGraf & Cummings (2006)
Rhipidodonta grataSimone (2006)
Diplodon (Rhipidodonta) deceptusMansur & Pereira (2006), Pereira et al. (2014)
Rhipidodonta deceptaMansur et al. (2020)

Unio gratus Ihering, 1893
‘Lea’ Ihering, 1893. Arch. Naturg. 59(1): 92.
(reference to Unio gratus Lea, 1860)

Diplodon (s.s.) deceptusOrtmann (1921)
Diplodon rotundus gratusParodiz (1968), Mansur (1970)

Taxonomic History (since 1900)

Diplodon (Cyclomya s.s.) gratusSimpson (1900)
Diplodon (s.s.) rufofuscusSimpson (1900), Simpson (1914)
Diplodon (Cyclomya s.s.) fontainianus var. gratusSimpson (1914)
Diplodon (Cyclomya s.s.) fontainianus var. deceptusSimpson (1914)
Diplodon (s.s.) gratusOrtmann (1921), Morretes (1949)
Diplodon (s.s.) deceptusOrtmann (1921), Morretes (1949)
Diplodon (Cyclomya) paranensis funebralisHaas (1931)
Diplodon (Cyclomya) fontainianusHaas (1931)
Diplodon (Rhipidodonta) charruanusBonetto (1964), Bonetto (1965), Figueiras (1965), Bonetto & Mansur (1970)
Diplodon (s.s.) granosus multistriatusBonetto (1964)
Diplodon (s.s.) delodontus expansusBonetto (1964)
Diplodon (Rhipidodonta) funebralisFigueiras (1965)
Diplodon rotundus gratusParodiz (1968), Mansur (1970)
Diplodon (Rhipidodonta) paranensis funebralisHaas (1969)
Diplodon (Rhipidodonta) fontainianusHaas (1969)
Diplodon (s.s.) delodontus wimanii [sic]Bonetto & Mansur (1970)
Diplodon deceptusMansur et al. (1988), Bogan & Hoeh (2000), Hoeh et al. (2001), Hoeh et al. (2002), Baker et al. (2003), Roe & Hoeh (2003), Baker et al. (2004), Walker et al. (2006), Hoeh et al. (2009), Marshall et al. (2014), Zieritz et al. (2015), Santos-Neto et al. (2016)
Rhipidodonta grataSimone (2006), Graf & Cummings (2007), Bogan (2010)
Diplodon rotundusGraf & Cummings (2006)
Diplodon (Rhipidodonta) deceptusMansur & Pereira (2006), Pereira et al. (2014)
Diplodon grataITIS (2013)
Diplodon gratusMiyahira et al. (2019), Graf & Cummings (2021)
Diplodon rufofuscusMiyahira et al. (2019)
Rhipidodonta deceptaMansur et al. (2020)

 
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