Unio nyassaensis var. tanganyicensis E.A. Smith, 1881
E.A. Smith, 1881. Proc. Zool. Soc. London 1881: 298, pl. 34, fig. 34a.
(intro'd as intra-sp. of Unio nyassaensis Lea, 1864; homonym of Unio tanganyicensis E.A. Smith, 1880; renamed Unio nyassaensis var. ujijiensis Crosse, 1881)
Type(s): HOLOTYPE BMNH_80-12-20-39, Lake Tanganyika.

Parreysia (s.s.) ujijiensis — Simpson (1900), Simpson (1914)
Parreysia ujijiensis — Pilsbry & Bequaert (1927)
Nyassunio ujijiensis — Haas (1936), Haas (1969), Graf & Cummings (2011)
Parreysia nyassaensis — Leloup (1950)
Nyassunio nyassaensis nyassaensis — Crowley et al. (1964)
Caelatura [sic] ujijiensis — Mandahl-Barth (1988)
Nyassunio ujijensis [sic] — Daget (1998)
Coelatura ujijiensis — Scholz & Glaubrecht (2004)

Unio nyassaensis var. ujijiensis Crosse, 1881
Crosse, 1881. J. de Conch. 29: 294, var. B.
(intro'd as intra-sp. of Unio nyassaensis Lea, 1864; new name for Unio nyassaensis var. tanganyicensis E.A. Smith, 1881)
Type(s): HOLOTYPE BMNH_80-12-20-39, Lake Tanganyika.

— Simpson (1914)
Parreysia ujijiensis — Pilsbry & Bequaert (1927)
Nyassunio ujijiensis — Haas (1936), Haas (1969), Graf & Cummings (2007), IUCN (2010), Bogan (2010), Graf & Cummings (2011), Graf & Cummings (2021)
Parreysia nyassaensis — Leloup (1950)
Nyassunio nyassaensis nyassaensis — Crowley et al. (1964)
Caelatura [sic] ujijiensis — Mandahl-Barth (1988), Slugina (2006)
Nyassunio ujijensis [sic] — Daget (1998)
Coelatura ujijiensis — Scholz & Glaubrecht (2004)

Ruellania nyassaensis Leloup, 1950
‘Lea’ of Authors.
Paetel, 1890. Cat. Conch.-Samml. 3: 113.
Leloup, 1950. Res. Sci. Explor. Hydrob. Lac Tanganyika (1946-1947) 3: 31, figs. 5, 12-14; pl. 4, fig. 1.
(misidentified reference to Unio nyassaensis Lea, 1864)

Nyassunio nyassaensis nyassaensis — Crowley et al. (1964)
Caelatura [sic] ujijiensis — Mandahl-Barth (1988)
Nyassunio ujijensis [sic] — Daget (1998)

Grandidieria ujijensis Bourguignat, 1885
‘Crosse’ of Authors.
Bourguignat, 1885. Bull. Soc. Malac. France 2: 7.
Bourguignat, 1885. Notice Prodr. Moll. Giraud Tanganika: 94.
Bourguignat, 1886. Esp. Nouv. et Genres Nouv. Lac Oukékérewe et Tanganika: 22.
‘Crosse’ Daget, 1998. Cat. Bivalves Africains: 79 [as ‘Nyassunio ujijensis’].
(error for Unio nyassaensis var. ujijiensis Crosse, 1881)

Unio ujijensis — E.A. Smith (1904)

Unio ujijiensis Bourguignat, 1883
‘Crosse’ Bourguignat, 1883. Moll. Fluv. Nyanza: 18.
(reference to Unio nyassaensis var. ujijiensis Crosse, 1881)

Parreysia (s.s.) ujijiensis — Simpson (1900), Simpson (1914)
Parreyssia [sic] ujijiensis — Kobelt (1910)
Nyassunio ujijensis [sic] — Daget (1998)