Anodonta uniopsis Lamarck, 1819
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 86, sp. 8.
Type(s): POSSIBLE SYNTYPE MNHN_MPL_0040, “Habite... les régions australes? Du voyage de Baudin. Mus. n°.”.

Leguminaia (sec. Microcondylaea) uniopsis — Simpson (1900), Simpson (1914), Thiele (1934)
Microcondylaea compressa — Haas (1940), Haas (1969), Fauna Europaea (2012)
Leguminaia (Microcondylaea) uniopsis — Haas (1969)

Unio depressa C. Pfeiffer, 1825
‘Mühl.’ C. Pfeiffer, 1825. Naturgesch. Dtsch. Land-Süßw. Moll. 2: 32, pl. 8, figs. 3-4.
(homonym of Unio depressa Lamarck, 1819; renamed Unio (Alasmodonta) bonellii Férussac, 1827; renamed Alasmodonta compressa Menke, 1830)

Leguminaia (sec. Microcondylaea) uniopsis — Simpson (1900), Simpson (1914)
Microcondylaea compressa — Haas (1940), Haas (1969), Fauna Europaea (2012)

Unio (Alasmodonta) bonellii Férussac, 1827
Férussac, 1827. Bull. Sci. Nat. et Géol. 10: 417.
(new name for Unio depressa C. Pfeiffer, 1825; renamed Alasmodonta compressa Menke, 1830)
Type(s): LECTOTYPE SMF_4467, A.d. Lijak, Isonzo-Gebiet b. Gorz.

Leguminaia (sec. Microcondylaea) uniopsis — Simpson (1900), Simpson (1914)
Microcondylaea bonelli — Kobelt (1904), Dhora (2009)
Microcondylaea bonellii — Haas (1924), Nagel et al. (1998), Falkner et al. (2001), Nagel & Badino (2001), IUCN (2011), ... Dai et al. (2024), Zhang et al. (2024), Dai et al. (2025), Dai et al. (2025), Chen et al. (2025)
Microcondylaea compressa — Haas (1940), Haas (1969), Fauna Europaea (2012)

Alasmodonta compressa Menke, 1830
Menke, 1830. Syn. Method. Moll.: 106.
(new name for Unio depressa C. Pfeiffer, 1825; new name for Unio (Alasmodonta) bonellii Férussac, 1827)
Type(s): NOMEN NUDUM SMF_4458, Isonza Zufluss b. Collalto n. Hospitaleto, Grafschaft Gorz.

Leguminaia (sec. Microcondylaea) uniopsis — Simpson (1900), Simpson (1914)
Microcondylaea compressa — Haas (1940), Haas (1969), Graf (2007), Fauna Europaea (2012)
Microcondylaea bonellii — Nagel et al. (1998), IUCN (2011), Lopes-Lima et al. (2017)
Microcondylea [sic] compressa — Bába (2000)

Unio bonellii Rossmässler, 1835
‘Fér.’ Rossmässler, 1835. Icon. Land- und Süssw.-Moll. 1 (2): 24, pl. 9, fig. 134.
(reference to Unio (Alasmodonta) bonellii Férussac, 1827)

Microcondylaea bonellii — Graf & Cummings (2007), Bogan (2010)

Unio bonelli var. curvata Rossmässler, 1842
Rossmässler, 1842. Icon. Land- und Süssw.-Moll. 2 (5): 14, pl. 55, fig. 746.
(intro'd as intra-sp. of Unio (Alasmodonta) bonellii Férussac, 1827)
Type(s): HOLOTYPE SMF_4462, Lago di Como (= Lario).

Microcondylaea compressa — Haas (1940), Haas (1969)

Microcondylus crassulus Drouët, 1879
Drouët, 1879. J. de Conch. 27: 139.
Type(s): SYNTYPE SMF_4470, Castellgoffredo b. Mantua.

Microcondylaea compressa — Haas (1940), Haas (1969)

Microcondylus gibbosus Drouët, 1879
Drouët, 1879. J. de Conch. 27: 140.

Microcondylaea compressa — Haas (1940), Haas (1969)

Microcondylus moreleti Drouët, 1879
Drouët, 1879. J. de Conch. 27: 139.

Microcondylaea compressa — Haas (1940), Haas (1969)

Microcondylus squamosus Drouët, 1879
Drouët, 1879. J. de Conch. 27: 139.

Microcondylaea compressa — Haas (1940), Haas (1969)

Leguminaia doriae Bourguignat, 1883
Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 73 [as ‘doriæ’].

Microcondylaea compressa — Haas (1940), Haas (1969)

Leguminaia gestroi Bourguignat, 1883
Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 75.

Microcondylaea compressa — Haas (1940), Haas (1969)

Leguminaia servaini Bourguignat, 1883
Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 69.

Microcondylaea compressa — Haas (1940), Haas (1969)

Microcondylaea truncatus Drouët, 1883
Drouët, 1883. Unionidae de l’Italie: 85.

Microcondylaea compressa — Haas (1940)
— Haas (1969)

Leguminaia craverii Pollonera, 1899
Pollonera, 1899. Boll. Mus. Zool. Anat. Comp. Torino 4: 14.

Microcondylaea compressa — Haas (1940), Haas (1969)

Leguminaia pedemontana Pollonera, 1899
Pollonera, 1899. Boll. Mus. Zool. Anat. Comp. Torino 4: 14.

Microcondylaea compressa — Haas (1940), Haas (1969)

Microcondylaea bonellii form levicensis Kobelt, 1913
Kobelt, 1913. Icon. Land- und Süssw.-Moll. 19: 54, pl. 535, fig. 2754.
(intro'd as intra-sp. of Unio (Alasmodonta) bonellii Férussac, 1827)
Type(s): HOLOTYPE SMF_4459, Lago di Levico, im Val Sugana, Tridentino.

Microcondylaea compressa — Haas (1940), Haas (1969)

Microcondylaea bonellii form parisii Kobelt, 1913
Kobelt, 1913. Icon. Land- und Süssw.-Moll. 19: 55, pl. 536, fig. 2755.
(intro'd as intra-sp. of Unio (Alasmodonta) bonellii Férussac, 1827)
Type(s): HOLOTYPE SMF_4460, Lago di Caldaro, sudl v Bozen.

Microcondylaea compressa — Haas (1940), Haas (1969)

Pseudoanodonta depressa var. augusti Graziadei, 1933
Graziadei, 1933. Stud. Trent. Sci. Nat. Trento 14: 43.
(intro'd as intra-sp. of Unio depressa C. Pfeiffer, 1825)
Type(s): SYNTYPE SMF_9238, Levico See, S. Tirol.

Microcondylaea compressa — Haas (1940), Haas (1969)

Alasmodonta compressa of Authors, unknown year
‘Por.’ of Authors.
(reference to Alasmodonta compressa Menke, 1830)

Microcondylus crassus Haas, 1940
‘Drouët’ Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 133.
(error for Microcondylus crassulus Drouët, 1879)