Bivalvia | ... | Hyrioidea | Hyriidae | Hyriinae | Rhipidodontini | Diplodon rhombeus

Ortmann, 1921. Mem. Carnegie Mus. 8: 531, pl. 38, figs. 5-7; pl. 46, fig. 7.
LECTOTYPE CM_61.9264 (by R.I. Johnson, 1977: 237), Rio Grande, Boqueirao, Bahia, Brazil.
+ Diplodon rhombeus Spix, 1827 — Nagel, 2025: 201.
lectotype CM 61.9264 (by R.I. Johnson, 1977: 237) — Rio Grande, Boqueirão, Bahia, Brazil (S. Francisco drainage)” [11° 21’S 043°50’W] (Carnegie Museum of Natural History, Pittsburgh)
paralectotypes SMF 4646/2 (coll. F. Haas ex Carnegie Museum 1930, leg. J.D. Haseman 09.i.1908)
+ Rhipidodonta rhombea (Wagner, 1827) — Simone, 2006: 270.
paratopotype fmnh_53049
syntype ansp_167875
= Diplodon (s.s.) delodontus enno Ortmann — Haas, 1969: 525.
= Diplodon rotundus enno (Ortmann, 1921) — Parodiz, 1968: 5.
+ Diplodon (s.s.) rotundus rotundus (Wagner, 1827) — Bonetto, 1965: 42.
= Diplodon (s.s.) delodontus enno Ortmann — Bonetto, 1964: 325.
+ Diplodon rotundus (Wagner, 1827) — Bonetto, 1962: 219.
= Diplodon (s.s.) enno Ortmann, 1921 — Morretes, 1949: 20.
= Diplodon delodontus enno Ortmann, 1921 — Haas, 1930: 195.
= Diplodon (s.s.) enno Ortmann, 1921 — Ortmann, 1921: 531, pl. 38, figs. 5-8.