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Page last updated
Wed 1 October 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!

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Bivalvia | Unionoida | Unionoidea | Unionidae | Parreysiinae | Parreysiini | Parreysia

species Parreysia rajahensis (Lea, 1841): synonymy
     22 specimens

Unio rajahensis Lea, 1841
Lea, 1841. Proc. Amer. Phil. Soc. 2: 30.
Lea, 1842. Trans. Amer. Phil. Soc. 8 [O. 3]: 239, pl. 23, fig. 53.
Type(s): HOLOTYPE USNM_84638, Rajah’s Tank, India.

Parreysia (s.s.) rajahensisSimpson (1900), Preston (1912), Simpson (1914), Preston (1915), Subba Rao (1989), Graf & Cummings (2007), Ramakrishna & Dey (2007)
Parreysia rajahensisHaas (1969), Bogan (2010), IUCN (2010), Graf & Cummings (2021)
Parreysia (rajahensis-group) rajahensisBolotov et al. (2022)

Unio indicus Sowerby, 1866
Sowerby, 1866. Conch. Icon. 16: pl. 40, sp. 222.
Type(s): HOLOTYPE BMNH_1965195, India.

Parreysia (s.s.) rajahensisSimpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Parreysia rajahensisHaas (1969)
Parreysia (rajahensis-group) rajahensisBolotov et al. (2022)

Unio indicus var. aurea Hanley & Theobald, 1874
‘Sowerby’ Hanley & Theobald, 1874. Conch. Indica (6): 43, pl. 107, fig. 4.

Taxonomic History (since 1900)

Parreysia (s.s.) rajahensisSimpson (1900), Preston (1912), Simpson (1914), Preston (1915), Subba Rao (1989), Graf & Cummings (2007), Ramakrishna & Dey (2007)
Parreysia rajahensisHaas (1969), Bogan (2010), IUCN (2010), Graf & Cummings (2021)
Parreysia (rajahensis-group) rajahensisBolotov et al. (2022)

 
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