Unio nagpoorensis Lea, 1860
Lea, 1860. Proc. Acad. Nat. Sci. 11: 331.
Lea, 1860. Jour. Acad. Nat. Sci. 4 [O. 7]: 270, pl. 45, fig. 150.
Type(s): HOLOTYPE ANSP_125504, Ambijiri Tanks, Nagpoor, Bengal, India.

Parreysia (s.s.) corrugata var. nagpoorensis — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Parreysia corrugata — Haas (1969)
Parreysia (s.s.) corrugata nagpoorensis — Subba Rao (1989)
Parreysia (s.s.) corrugata subsp. nagpoorensis — Ramakrishna & Dey (2007)
Parreysia (corrugata-group) nagpoorensis — Bolotov et al. (2022), Bolotov et al. (2024)
Parreysia nagpoorensis — Bolotov et al. (2022), Chen et al. (2023), Dai et al. (2025)

Unio merodabensis Küster, 1861
‘von dem Busch in lit.’ Küster, 1861. Conchyl. Cab. 9(2): 233, pl. 78, fig. 4.

Parreysia (s.s.) corrugata — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Parreysia corrugata — Haas (1969)
Parreysia (corrugata-group) nagpoorensis — Bolotov et al. (2022)

Unio pinax Benson, 1862
Benson, 1862. Ann. Mag. Nat. Hist. 10: 192.
Type(s): TYPE BMNH_MP_434, [no locality available - Asia].

Parreysia (s.s.) favidens var. pinax — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Parreysia favidens — Haas (1969)
Parreysia (s.s.) favidens pinax — Subba Rao (1989)
Parreysia favidens pinax — Nesemann et al. (2007), IUCN (2011)
Parreysia (corrugata-group) nagpoorensis — Bolotov et al. (2022)

Unio triembolus Benson, 1862
Benson, 1862. Ann. Mag. Nat. Hist. 10: 190.
Type(s): POSSIBLE SYNTYPES MCZ_175558, Ramgunga River, near Morodabod, India.

Parreysia (s.s.) tavoyensis var. triembolus — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Parreysia tavoyensis — Haas (1969)
Parreysia (s.s.) triembolus — Subba Rao (1989), Ramakrishna & Dey (2007)
Parreysia (s.s.) triembola — Graf & Cummings (2007)
Parreysia triembolus — Nesemann et al. (2007), IUCN (2010)
Parreysia triembola — Bogan (2010), Graf & Cummings (2021)
Parreysia (corrugata-group) nagpoorensis — Bolotov et al. (2022)

Unio trirostris Musgrave, 1863
Musgrave, 1863. Phot. Conch. of Conch. Misc. Hanley: pl. 2, fig. 9.
Hanley & Theobald, 1870. Conch. Indica (1): 6, pl. 11, fig. 6.
Type(s): HOLOTYPE BMNH_1907-12-30-45, Hindostan.

Parreysia (s.s.) favidens — Simpson (1900), Preston (1912), Preston (1915)
Parreysia (s.s.) favidens var. trirostris — Simpson (1914)
Parreysia favidens — Haas (1969)
Parreysia (corrugata-group) nagpoorensis — Bolotov et al. (2022)

Parreysia corrugata Bolotov et al., 2017
‘Müller’ of Authors.
Bolotov et al., 2017. Sci. Repts. 7: Table S1 [as ‘Parreysia corrugata sp. 2’]. [in part]
Bolotov et al., 2017. Sci. Repts. 7: Table S1. [in part]
Bolotov et al., 2018. Sci. Repts. 8: Table S1 [as ‘Parreysia corrygata sp. 2’].
Pfeiffer et al., 2018. J. Moll. Studies 84(4): Table 1. [in part]
Huang et al., 2019. MPE 130: Table S4 [as ‘Parreysia corrugata sp. 2’].
Bolotov et al., 2020. Sci. Repts. 10: Table S1 [as ‘Parreysia corrugata sp. 3’].
Bolotov et al., 2020. Sci. Repts. 10: Table S1 [as ‘Parreysia corrugata sp. 2’].
Imsong & Murali, 2023. Uttar Pradesh J. Zool. 44(20): Table 1.

Unio corrugatus var. nagporensis Hanley & Theobald, 1872
Hanley & Theobald, 1872. Conch. Indica (3): 21.

Parreysia (s.s.) corrugata var. nagpoorensis — Preston (1912)