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.

Unio nagpoorensis — Lea (1860)
Margaron (Unio) nagpoorensis — Lea (1870)
Unio corrugatus var. nagporensis — Hanley & Theobald (1872)
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 — Dey (2007)
Parreysia (corrugata-group) nagpoorensis — Bolotov et al. (2022)
Parreysia nagpoorensis — Bolotov et al. (2022), Chen et al. (2023)

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

Unio triembolus — Benson (1862), Hanley & Theobald (1874)
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), 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 pinax Benson, 1862
Benson, 1862, Ann. Mag. Nat. Hist. 10: 192.
Type(s): TYPE BMNH_MP_434, [no locality available - Asia].

Unio pinax — Benson (1862)
Unio favidens var. pinax — Hanley & Theobald (1870)
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 merodabensis Küster, 1861
‘von dem Busch in lit.’ Küster, 1861, Conchyl. Cab. 9(2): 233, pl. 78, fig. 4.

Unio merodabensis — Küster (1861)
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 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.

Unio trirostris — Musgrave (1863), Hanley & Theobald (1870)
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)

Unio corrugatus var. nagporensis Hanley & Theobald, 1872
Hanley & Theobald, 1872, Conch. Indica (3): 21.
(error for Unio nagpoorensis Lea, 1860)

Unio corrugatus var. nagporensis — Hanley & Theobald (1872)
Parreysia (s.s.) corrugata var. nagpoorensis — Preston (1912)

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’]. [in part]
Bolotov et al., 2020, Sci. Repts. 10: Table S1 [as ‘Parreysia corrugata sp. 2’].
(misidentified reference to Mya corrugata Müller, 1774)

Parreysia corrugata — Bolotov et al. (2017)

Parreysia favidens Bolotov et al., 2020
‘Benson’ Bolotov et al., 2020, Sci. Repts. 10: Table S1 [as ‘Pareysia favidens sp. 2’].
(misidentified reference to Unio favidens Benson, 1862)

Parreysia favidens — Bolotov et al. (2020)

Taxonomic History (since 1900)

Parreysia (s.s.) corrugata var. nagpoorensis — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Parreysia (s.s.) corrugata — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Parreysia (s.s.) favidens var. pinax — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Parreysia (s.s.) tavoyensis var. triembolus — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915)
Parreysia (s.s.) favidens — Simpson (1900), Preston (1912), Preston (1915)
Parreysia (s.s.) favidens var. trirostris — Simpson (1914)
Parreysia corrugata — Haas (1969), Bolotov et al. (2017)
Parreysia favidens — Haas (1969), Bolotov et al. (2020)
Parreysia tavoyensis — Haas (1969)
Parreysia (s.s.) corrugata nagpoorensis — Subba Rao (1989)
Parreysia (s.s.) favidens pinax — Subba Rao (1989)
Parreysia (s.s.) triembolus — Subba Rao (1989), Dey (2007)
Parreysia (s.s.) corrugata subsp. nagpoorensis — Dey (2007)
Parreysia favidens pinax — Nesemann et al. (2007), IUCN (2011)
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)
Parreysia nagpoorensis — Bolotov et al. (2022), Chen et al. (2023)