Unio episcopalis Tristram, 1865
Tristram, 1865. Proc. Zool. Soc. London 1865: 544.
Type(s): LECTOTYPE BMNH_1936-3-10-3, River Orontes.

Unio (sec. Lymnium) episcopalis — Simpson (1900), Simpson (1914)
Psilunio littoralis homsensis — Haas (1940)
Potomida littoralis homsensis — Haas (1969), Schütt (1983)
Pseudunio homsensis — D.G. Smith (2001)

Unio homsensis Lea, 1865
Lea, 1865. Proc. Acad. Nat. Sci. 16: 285.
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 249 [9], pl. 29, fig. 63.
Type(s): SYNTYPE ANSP_125718, Orontes R., Lake Homs, N. Syria.

Unio (sec. Lymnium) homsensis — Simpson (1900), Simpson (1914)
Leguminaia (Rhombunio) homsensis — Germain (1911)
Psilunio littoralis homsensis — Haas (1940)
Potomida littoralis homsensis — Haas (1969), Schütt (1983)
Pseudunio homsensis — Falkner (1994), D.G. Smith (2001), Lopes-Lima et al. (2018), Lyubas et al. (2019), Vikhrev et al. (2019), Graf & Cummings (2021), Lopes-Lima et al. (2021), Wu et al. (2021)
Margaritifera homsensis — Graf (2007), Graf & Cummings (2007), IUCN (2014), Araujo et al. (2016), Vikhrev et al. (2018), Huang et al. (2019), Bashê (2022)

Unio barroisi Drouët, 1893
Drouët, 1893. J. de Conch. 41: 36.
Type(s): PARATYPE SMF_4548, A.d. Nahr el Haroun, Syrien.

— Simpson (1914)
Psilunio littoralis homsensis — Haas (1940)
Potomida littoralis homsensis — Haas (1969), Schütt (1983)
Pseudunio homsensis — D.G. Smith (2001)

Margaritana syriaca Pallary, 1929
Pallary, 1929. Mém. Inst. Égypte 12: 34; ‘Abb.’.
Pallary, 1933. Bull. Mus. Hist. Nat. 5: 149. [nomen nudum]
Pallary, 1939. Mém. Inst. Égypte 39: 115.
Type(s): SYNTYPES BMNH_1937-12-30-13052-13053, Le Nahr el Kabir a Tell Kalat [Syria].

Margaritana syriaca — Pallary (1939)
Psilunio littoralis homsensis — Haas (1940)
Potomida littoralis homsensis — Haas (1969), Schütt (1983)
Pseudunio homsensis — D.G. Smith (2001)

Margaritana syriaca var. ponderosa Pallary, 1929
Pallary, 1929. Mém. Inst. Égypte 12: 36.
Pallary, 1939. Mém. Inst. Égypte 39: 116.
(homonym of Margaritana dernaica var. ponderosa Pallary, 1928; intro'd as intra-sp. of Margaritana syriaca Pallary, 1929)
Type(s): SYNTYPE MNHN_MP_0077, L’Oued el Kebir a Tell Kalat (Alaouites).

Margaritana syriaca var. ponderosa — Pallary (1939)

Margaritana syriaca var. minor Pallary, 1939
Pallary, 1939. Mém. Inst. Égypte 39: 116.
(homonym of Margaritana minor Lea, 1845; intro'd as intra-sp. of Margaritana syriaca Pallary, 1929)

Margaritana syriaca var. minor — Pallary (1939)

Margaritana syriaca var. quadrata Pallary, 1939
Pallary, 1939. Mém. Inst. Égypte 39: 116.

Margaritana syriaca var. quadrata — Pallary (1939)