Diplodon parallelipipedon d’Orbigny, 1846
‘Lea’ of Authors.
d’Orbigny, 1846, Voyage dans l’Amérique Méridionale 5: 609.
Simpson, 1900, Proc. U.S. Nat. Mus. 22: 884.
Corsi, 1900, Anais Mus. Nac. Montevideo 2: 447.
Simpson, 1914, Descr. Cat. Naiades: 1274-1275.
Haas, 1930, Senckenbergiana 12: 189.
Morretes, 1949, Arqu. Mus. Paranaense 7: 18.
Parodiz, 1968, Sterkiana 30: 8.
Mansur, 1970, Iheringia 39: 83.
Quintana, 1982, Rev. Mus. Argentino Zoológicas 11: 128.
Simone, 2006, Land. Freshw. Moll. Brazil.: 260.
(error for Unio parallelopipedon Lea, 1834)

Unio koseretzi Simpson, 1900
‘Clessin’ of Authors.
Simpson, 1900, Proc. U.S. Nat. Mus. 22: 894.
Simpson, 1914, Descr. Cat. Naiades: 1312.
Haas, 1930, Senckenbergiana 12: 182.
Bonetto, 1964, Physis 24(68): 327.
Parodiz, 1968, Sterkiana 30: 7.
Bonetto & Mansur, 1970, Acta Zool. Lilloana 27: 245.
(error for Unio koseritzi Clessin, 1888)

Unio janthinus Haas, 1930
‘Philippi’ of Authors.
Haas, 1930, Senckenbergiana 12: 178.
Parodiz, 1968, Sterkiana 30: 7.
(error for Unio ianthinus Philippi, 1869)

Unio sebastiani Haas, 1930
‘von Ihering’ Haas, 1930, Senckenbergiana 12: 180. [nomen nudum]

Unio greefeanus Haas, 1930
‘von Ihering’ of Authors.
Haas, 1930, Senckenbergiana 12: 192.
Bonetto, 1964, Physis 24(68): 325.
Bonetto, 1965, Anais Congr. Lat.-Amer. Zool. 2: 44.
(error for Unio greeffeanus Ihering, 1893)

Unio santi-pauli Haas, 1930
‘Ihering in litt.’ Haas, 1930, Senckenbergiana 12: 192.
(error for Unio sancta-paulae Simpson, 1914)

Diplodon asunicionis [sic] Marshall, 1926

Diplodon besckeanus (Dunker, 1848)
+ Diplodon garbei Ihering, 1910
+ Diplodon panco Ihering, 1910
+ Diplodon ellipticus santanus Ihering, 1910

Diplodon burroughianus (Lea, 1834)

Diplodon charruanus (d’Orbigny, 1835)
+ Unio faba d’Orbigny, 1835
+ Unio piceus Lea, 1860
+ Unio aethiops Lea, 1860
+ Unio parcus Lea, 1866
+ Unio firmus Lea, 1866
+ Unio koseritzi Clessin, 1888
+ Unio aethiopiformis Simpson, 1900
+ Diplodon (s.s.) perplexus Simpson, 1914
+ Diplodon (s.s.) trivialis Simpson, 1914
+ Diplodon hidalgoi Haas, 1916
+ Diplodon fortis Marshall, 1917
+ Diplodon hildae Ortmann, 1921
+ Diplodon berthae Ortmann, 1921
+ Diplodon trivialoides Marshall, 1922

Diplodon chilensis chilensis (Gray, 1828)
+ Unio smithii Griffith & Pidgeon, 1833
+ Unio childreni Griffith & Pidgeon, 1833
+ Unio obtusa d’Orbigny, 1835
+ Unio depressa d’Orbigny, 1835
+ Unio atratus Sowerby, 1839
+ Unio auratus Philippi, 1847
+ Unio araucanus Philippi, 1847
+ Unio molinae Philippi, 1847
+ Unio casaeblancae Philippi, 1849
+ Unio limensis Küster, 1856
+ Unio gassiei Küster, 1856
+ Unio modestus Küster, 1856
+ Unio chiloensis Küster, 1861
+ Unio fragilis Reeve, 1865
+ Unio aplatus Reeve, 1865
+ Unio longus Philippi, 1869
+ Unio colchaguensis Philippi, 1869
+ Unio foncki Philippi, 1869
+ Unio ianthinus Philippi, 1869
+ Unio valdivianus Philippi, 1869
+ Unio montanus Philippi, 1869
+ Unio jacobaeus Philippi, 1869
+ Unio landbecki Philippi, 1869
+ Unio diplodon Philippi, 1869
+ Diplodon (Dipldon) cuprinus Simpson, 1900
+ Diplodon (s.s.) aureus Simpson, 1900

Diplodon chilensis patagonica (d’Orbigny, 1835)
+ Unio frenzelii Ihering, 1893
+ Unio frenzelii var. andina Ihering, 1893
+ Diplodon huapensis Bartsch, 1906

Diplodon delodontus delodontus (Lamarck, 1819)
+ Unio lacteolus Lea, 1834
+ Unio divaricatus Lea, 1834
+ Unio fokkesi Dunker, 1852
+ Unio brownii Lea, 1856
+ Unio rudus Lea, 1859
+ Unio paraguayensis Lea, 1866
+ Unio ampullaceus Lea, 1866
+ Diplodon podagrosus Marshall, 1923

Diplodon delodontus enno Ortmann, 1921

Diplodon delodontus expansus (Küster, 1856)
+ Unio effulgens Lea, 1856
+ Unio eurhynchus Küster, 1861
+ Unio caipira Ihering, 1893
+ Unio greeffeanus Ihering, 1893
+ Unio aethiops var. piracicabana Ihering, 1893
+ Unio paulista Ihering, 1893
+ Unio guahybae Simpson, 1900
+ Diplodon (s.s.) leai Simpson, 1900
+ Unio bischoffi Simpson, 1914
+ Diplodon (s.s.) mogymirim Ortmann, 1921
+ Unio santi-pauli Haas, 1930

Diplodon delodontus wymanii (Lea, 1860)
+ Unio uruguayensis Lea, 1860
+ Unio piger Lea, 1860
+ Unio locellus Lea, 1866
+ Unio apprimus Lea, 1866

Diplodon guaranianus fluctiger (Lea, 1859)

Diplodon guaranianus guaranianus (d’Orbigny, 1835)

Diplodon guaranianus hasemani Ortmann, 1921

Diplodon guaranianus pazi (Hidalgo, 1868)

Diplodon hylaeus (d’Orbigny, 1835)

Diplodon iheringi Simpson, 1900

Diplodon obsolescens Baker, F., 1914

Diplodon parallelipipedon [sic] acutirostris (Lea, 1866)
+ Unio trifidus Lea, 1860

Diplodon parallelipipedon parallelipipedon [sic] (Lea, 1834)

Diplodon rhuacoicus (d’Orbigny, 1835)
+ Unio binneyi Lea, 1845
+ Unio dunkerianus Lea, 1856
+ Unio lepidus Lea, 1860
+ Unio rhyacoicus Martens, 1868
+ Margaron (Unio) lepidior Lea, 1870
+ Unio martensi Ihering, 1893
+ Diplodon (s.s.) suppositus Simpson, 1914
+ Diplodon (s.s.) santamariae Simpson, 1914
+ Diplodon (s.s.) imitator Ortmann, 1921
+ Diplodon simillimus Ortmann, 1921
+ Diplodon vicarius Ortmann, 1921
+ Diplodon decipiens Ortmann, 1921
+ Diplodon subcylindricus Marshall, 1922
+ Diplodon pilsbryi Marshall, 1928
+ Unio sebastiani Haas, 1930
+ Diplodon yaguaronis Marshall, 1930

Diplodon solidulus (Philippi, 1869)

Diplodon suavidicus (Lea, 1856)
+ Unio demararaensis Lea, 1859
+ Diplodon hartwrighti Ihering, 1910
+ Diplodon kelseyi F. Baker, 1913
+ Diplodon guayanensis Haas, 1929

Diplodon wheatleyanus (Lea, 1856)
+ Unio rhuaconicus Küster, 1856
+ Unio peculiaris Lea, 1866