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Unio subtrigonus Sowerby, 1867

Sowerby, 1867. Conch. Icon. 16: pl. 58, fig. 292; errata [changed to U. cambojensis Petit’].
(homonym of Unio subtrigonus Noulet, 1864; renamed Unio vagulus Fischer, 1891)
Type(s): HOLOTYPE BMNH_1874-12-11-3, Siam.

Hyriopsis (s.s.) vagulus — Simpson (1900)
Hyriopsis (s.s.) vagula — Simpson (1914)
Pseudodon (Monodontina) cambodjensis — Haas (1920), Haas (1924), Haas (1969)
Pseudodon cambodjensis cambodjensis — Brandt (1974)
Pseudodon cambodjensis — IUCN (2011)
Monodontina cambodjensis — Bolotov et al. (2020)
Pseudodon vagulus — Bolotov et al. (2023), Jeratthitikul et al. (2025)

Unio vagulus Fischer, 1891

Sowerby, 1867. Conch. Icon. 16: pl. 58, fig. 292 [as ‘Unio subtrigonus’].
Fischer, 1891. Bull. Soc. Hist. Nat. Autun 4: 223.
(new name for Unio subtrigonus Sowerby, 1867)
Type(s): HOLOTYPE BMNH_1874-12-11-3, Siam.

Hyriopsis (s.s.) vagulus — Simpson (1900)
Hyriopsis (s.s.) vagula — Simpson (1914)
Pseudodon (Monodontina) cambodjensis — Haas (1920), Haas (1969)
Pseudodon cambodjensis cambodjensis — Brandt (1974)
Pseudodon cambodjensis — IUCN (2011)
Monodontina cambodjensis — Bolotov et al. (2020)
Pseudodon vagulus — Bolotov et al. (2023), Zieritz et al. (2024), Jeratthitikul et al. (2024), Jeratthitikul et al. (2025), Konopleva et al. (2025), Jeratthitikul et al. (2025)

Pseudodon cambodjensis tenerrimus Brandt, 1974

Brandt, 1974. Arch. Moll. 105: 270, pl. 20, fig. 29.
(intro'd as intra-sp. of Monocondylea cambodjensis Petit de la Saussaye, 1865)
Type(s): HOLOTYPE SMF_188817, Thailand: Songkram at Sri Sonkram.

Pseudodon cambodjensis tenerrimus — Brandt (1974)
Monodontina cambodjensis — Bolotov et al. (2020)
Pseudodon vagulus — Bolotov et al. (2023), Jeratthitikul et al. (2025)

Pseudodon cambodjensis Bolotov et al., 2023

‘Petit de Saussaye’ of Authors.
Bolotov et al., 2023. Water 15: Dataset S1.
Zieritz et al., 2024. Zool. J. Linn. Soc. 201, zlae076: Table S4.
Jeratthitikul et al., 2024. Zoosyst. Evol. 100(4): Table S1.
Jeratthitikul et al., 2025. ZooKeys 1224: Table S1.
Konopleva et al., 2025. Ecologica Montenegrina 88: Supplementary Dataset 1.
(misidentified reference to Monocondylea cambodjensis Petit de la Saussaye, 1865)

Pseudodon vagulus — Jeratthitikul et al. (2025)