Mya pictorum Linnaeus, 1758
Lister, 1678. Hist. Anim. Anglic.: [app.] pl. 1, fig. 4. [pre-linnaean]
Linnaeus, 1758. Syst. Nat. 1: 671, sp. 19.
Linnaeus, 1767. Syst. Nat. 1(2): 1112, sp. 28.
Type(s): SYNTYPES LS_28, “Habitat in Europae fluviis.”.

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum — Kobelt (1904), Kobelt & Haas (1910), Ortmann (1912), Ortmann (1914), Haas (1924), ... Lopes-Lima et al. (2024), Wu et al. (2024), Dai et al. (2024), Hou et al. (2024), Dai et al. (2025)
Unio (s.s.) pictorum — Zhadin (1938), Haas (1969), Zatravkin (1983), Falkner (1994), Korniushin (1998), Graf (2002), Vinarski & Kantor (2016)
Unio pictorum pictorum — Haas (1940), Haas (1969), Nagel (2000), Nagel & Badino (2001), Kantor & Sysoev (2005), Kantor et al. (2010), Fauna Europaea (2012), Lopes-Lima et al. (2017), Bogatov (2022)
Unio (s.s.) pictorum pictorum — Falkner et al. (2001), Falkner et al. (2002)
Unio cf. pictorum — Nishihara et al. (2016)

Mya nodosa Gmelin, 1791
Martini & Chemnitz, 1788. Conchyl. Cab. 10: 346, pl. 170, fig. 1650.
Gmelin, 1791. Syst. Nat. 1(6): 3222, sp. 23.
(renamed Unio nodulosa Lamarck, 1819)

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio nodulosa Lamarck, 1819
Martini & Chemnitz, 1788. Conchyl. Cab. 10: pl. 170, fig. 1650.
Bruguière, 1797. Encycl. Méth. 2: pl. 248, fig. 9 [as Unio sp.].
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 78, sp. 35.
(new name for Mya nodosa Gmelin, 1791)

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio rostrata Lamarck, 1819
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 77, sp. 31.

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio tumidus var. rostratus — Germain (1931)
Unio pictorum rostratus — Haas (1940), Haas (1969), Fauna Europaea (2012), Prié & Puillandre (2014), Lopes-Lima et al. (2017)
Unio (s.s.) rostratus — Zatravkin (1983)
Unio (s.s.) rostratus rostratus — Stadnichenko (1984)
Unio (s.s.) pictorum rostratus — Falkner et al. (2001), Falkner et al. (2002)
Unio rostratus — Starobogatov et al. (2004)
Unio rostratus rostratus — Kantor & Sysoev (2005), Kantor et al. (2010)
Unio pictorum — Graf (2007), He & Zhuang (2013), Klishko et al. (2017), Araujo et al. (2018)
Unio (s.s.) rostrata — Vinarski & Kantor (2016)

Unio limosus Nilsson, 1822
Pfeiffer, 1821. Natur. Deutsch. Land Sussw. Moll. 1: 115, t. 5. f. 10.
Nilsson, 1822. Hist. Moll. Svec.: 110.

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio (Rostratiana) limosus — Germain (1904)
Unio limosus — Germain (1931), Starobogatov et al. (2004)
Unio pictorum pictorum — Haas (1940), Haas (1969), Fauna Europaea (2012)
Unio (s.s.) limosus — Zatravkin (1983), Vinarski & Kantor (2016)
Unio limosus limosus — Kantor & Sysoev (2005), Kantor et al. (2010)
Unio pictorum — Graf (2007), He & Zhuang (2013), Klishko et al. (2017), Anisimova et al. (2018)
Unio pictorum limosus — Bogatov (2022)

Unio deshayesii Michaud, 1831
Michaud, 1831. Compl. Hist. Nat. Moll., Draparnaud: 107, pl. 16, fig. 30.
Type(s): FIGURED SYNTYPE MNHN_MP_0039, Quimper (Finestre).

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum pictorum — Haas (1940), Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio (s.s.) pictorum deshayesii — Falkner et al. (2001), Falkner et al. (2002)
Unio pictorum — He & Zhuang (2013)
Unio pictorum deshayesii — Prié & Puillandre (2014)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio rostratus Michaud, 1831
Michaud, 1831. Compl. Hist. Nat. Moll., Draparnaud: 108, pl. 16, fig. 25.
(homonym of Unio rostrata Lamarck, 1819)

Unio requieni var. pornae — Germain (1931)
Unio pictorum — He & Zhuang (2013)

Unio michaudiana Des Moulins, 1833
Des Moulins, 1833. Actes Soc. Linn. Bord. 6: 27, pl. 1, figs. 1-4.
(renamed Unio michaudi Germain, 1931)

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio michaudi — Germain (1931)
Unio pictorum platyrhynchoideus [sic] — Haas (1940)
Unio pictorum — He & Zhuang (2013)

Unio platyrhynchus Rossmässler, 1835
Rossmässler, 1835. Icon. Land- und Süssw.-Moll. 1 (2): 22, pl. 9, fig. 130.
Rossmässler, 1837. Icon. Land- und Süssw.-Moll. 1 (5-6): 20, pl. 24, fig. 338.

Unio (sec. Lymnium) platyrhynchus — Simpson (1900), Simpson (1914)
Unio requieni var. platyrhynchus — Germain (1931)
Unio (s.s.) pictorum var. platyrhynchus — Zhadin (1938)
Unio pictorum platyrhynchus — Haas (1940), Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio (s.s.) platyrhynchus — Stadnichenko (1984)
Unio (s.s.) pictorum platyrhynchus — Falkner et al. (2001)
Unio pictorum — He & Zhuang (2013), Araujo et al. (2018)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio longirostris Rossmässler, 1836
‘Ziegl.’ Rossmässler, 1836. Icon. Land- und Süssw.-Moll. 1 (3): 26, pl. 14, fig. 200.
Rossmässler, 1842. Icon. Land- und Süssw.-Moll. 2 (5): 13, pl. 54, fig. 738.

Unio (sec. Lymnium) pictorum — Simpson (1900)
Unio (sec. Lymnium) pictorum var. longirostris — Simpson (1914)
Unio tumidus var. rostratus — Germain (1931)
Unio pictorum platyrhynchus — Haas (1940), Haas (1969), Fauna Europaea (2012)
Unio (s.s.) rostratus rostratus — Stadnichenko (1984)
Unio rostratus — Starobogatov et al. (2004)
Unio rostratus rostratus — Kantor & Sysoev (2005)
Unio pictorum — He & Zhuang (2013), Klishko et al. (2017)
Unio (s.s.) rostrata — Vinarski & Kantor (2016)
Unio longirostris — Bogatov & Prozorova (2017)
Unio tumidus — Bogatov et al. (2018), Anisimova et al. (2018)
Unio tumidus longirostris — Bogatov (2022)

Unio graniger J.F. Schmidt, 1840
‘Ziegler’ J.F. Schmidt, 1840. Bull. Soc. imp. Nat. Moscou 13: 438.

Unio pictorum platyrhynchus — Haas (1940), Haas (1969)
Unio (s.s.) limosus graniger — Stadnichenko (1984)
Unio limosus graniger — Kantor & Sysoev (2005), Kantor et al. (2010)
Unio pictorum — He & Zhuang (2013)

Unio ponderosus Rossmässler, 1842
‘Spitzi’ Rossmässler, 1842. Icon. Land- und Süssw.-Moll. 2 (5): 31, pl. 59, fig. 767.
(homonym of Mya ponderosa Dillwyn, 1817)

Unio (s.s.) pictorum var. ponderosus — Zhadin (1938)
Unio pictorum platyrhynchus — Haas (1940), Haas (1969)
Unio (s.s.) pictorum ponderosus — Stadnichenko (1984)
Unio pictorum ponderosus — Kantor & Sysoev (2005), Kantor et al. (2010)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio pictorum var. grandis Rossmässler, 1842
‘A. Braun.’ Rossmässler, 1842. Icon. Land- und Süssw.-Moll. 2 (5): 14, pl. 55, fig. 741.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio pictorum latirostris — Haas (1913)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio requienii form crassidens Rossmässler, 1844
Rossmässler, 1844. Icon. Land- und Süssw.-Moll. 2 (6): 30, pl. 57, figs. 757-760. [infra-subsp.]
(homonym of Unio crassidens Lamarck, 1819; intro'd as intra-sp. of Unio requienii Michaud, 1831)

Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio philippii Dupuy, 1849
Dupuy, 1849. Cat. Extramar. Galliae Test.: 335.
Dupuy, 1852. Hist. Natur. Moll. France (6): 654, pl. 28, fig. 19.
(renamed Unio philippei Locard, 1882)

Unio (sec. Lymnium) batavus — Simpson (1900), Simpson (1914)
Unio turtoni var. philippei [sic] — Germain (1931)
Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)

Unio platyrinchoideus Dupuy, 1849
Dupuy, 1849. Cat. Extramar. Galliae Test.: no. 336.
Dupuy, 1852. Hist. Natur. Moll. France (6): 649, pl. 27, fig. 16.

Unio (sec. Lymnium) platyrinchoideus — Simpson (1900), Simpson (1914)
Unio requieni var. platyrhynchoideus [sic] — Germain (1931)
Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969), Fauna Europaea (2012)
Unio pictorum — He & Zhuang (2013), Araujo et al. (2018)
Unio pictorum platyrhinchoideus [sic] — Prié & Puillandre (2014)
Unio pictorum platyrinchoideus — Lopes-Lima et al. (2017)

Unio arca Küster, 1853
‘Held in sched.’ Küster, 1853. Conchyl. Cab. 9(2): 79, pl. 20, figs. 1-2.
(homonym of Unio arcus Conrad, 1834)

Unio pictorum latirostris — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio decollatus Küster, 1853
‘Held in sched.’ Küster, 1853. Conchyl. Cab. 9(2): 79, pl. 20, fig. 3.

Unio pictorum latirostris — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio latirostris Küster, 1853
Küster, 1853. Conchyl. Cab. 9(2): 86, pl. 22, figs. 5-6.

Unio pictorum latirostris — Haas (1913), Haas (1940), Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio (s.s.) pictorum latirostris — Falkner et al. (2001)
Unio pictorum — He & Zhuang (2013), Araujo et al. (2018)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio praeposterus Küster, 1853
‘Held’ Küster, 1853. Conchyl. Cab. 9(2): 87, pl. 22, fig. 7.

Unio pictorum praeposterus — Haas (1913), Haas (1940), Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio pictorum — He & Zhuang (2013), Araujo et al. (2018)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio concinnus Küster, 1854
Küster, 1854. Conchyl. Cab. 9(2): 93.
(intro'd as syn of Unio quinqueannulatus Küster, 1854)

Unio pictorum latirostris — Haas (1913), Haas (1940)
Unio pictorum — He & Zhuang (2013)

Unio maltzani Küster, 1854
Küster, 1854. Conchyl. Cab. 9(2): 106, pl. 29, figs. 1-2.

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio nathusii Küster, 1854
Küster, 1854. Conchyl. Cab. 9(2): 92, pl. 25, figs. 1-2.
(intro'd as syn of Mya pictorum Linnaeus, 1758)

Unio pictorum — He & Zhuang (2013)

Unio quinqueannulatus Küster, 1854
Küster, 1854. Conchyl. Cab. 9(2): 93, pl. 25, figs. 3-4.

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum latirostris — Haas (1913), Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio pallens var. albina Küster, 1854
Küster, 1854. Conchyl. Cab. 9(2): 105, pl. 28, fig. 3.
(intro'd as intra-sp. of Unio pallens Rossmässler, 1842)

Unio pictorum — He & Zhuang (2013)

Unio pictorum var. flavescens Moquin-Tandon, 1855
Moquin-Tandon, 1855. Hist. Natur. Moll. France 2: 576.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758; homonym of Unio flavescens Lea, 1845)

Unio pictorum — He & Zhuang (2013)

Unio pictorum var. milleti Moquin-Tandon, 1855
Millet, 1813. Moll. Terr. Fluv. Maine et Loire: 74 [as ‘Unio pictorum’ var. c].
Millet, 1833. Tabl. Méth. Moll. Terr. Fluv. Maine-et-Loire: 29 [as ‘Unio pictorum’ var. c].
Moquin-Tandon, 1855. Hist. Natur. Moll. France 2: 576.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio pictorum — He & Zhuang (2013)

Unio pictorum var. radiatus Moquin-Tandon, 1855
Millet, 1813. Moll. Terr. Fluv. Maine et Loire: 74 [as ‘Unio pictorum’ var b.].
Millet, 1833. Tabl. Méth. Moll. Terr. Fluv. Maine-et-Loire: 29 [as ‘Unio pictorum’ var. b].
Moquin-Tandon, 1855. Hist. Natur. Moll. France 2: 576.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758; homonym of Unio (Elliptio) viridis var. radiata Rafinesque, 1820)

Unio (Porniana) gestroianus radiatus — Germain (1904)
Unio pictorum — He & Zhuang (2013)

Limnoica linearis Gray, 1857
Gray, 1857. Fig. Moll. Animals 5: 37, pl. 363, fig. 3.

Unio pictorum l’Hôpital, 1859
l’Hôpital, 1859. Cat. moll. Caen: 62. [in part]
(reference to Mya pictorum Linnaeus, 1758)

Unio villae — Germain (1931)

Unio pictorum var. tumens de Joannis, 1859
de Joannis, 1859. Ann. Soc. Linn. Maine-et-Loire 3: 295, pl. 12, fig. 6.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio (Vincelotiana) tumens — Germain (1904)
Unio tumidus — Germain (1931)
Unio pictorum rostratus — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) rostrata — Vinarski & Kantor (2016)

Unio requieni var. rostralis de Joannis, 1859
de Joannis, 1859. Ann. Soc. Linn. Maine-et-Loire 3: 292, pl. 11, fig. 6.

— Germain (1904)
Unio consentaneus var. moquini — Germain (1931)
Unio pictorum — He & Zhuang (2013)

Unio baletonicus Küster, 1861
‘Ziegler in litt.’ Küster, 1861. Conchyl. Cab. 9(2): 231, pl. 78, fig. 1.

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum latirostris — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio actephilus Bourguignat, 1862
Bourguignat, 1862. Rev. Mag. Zool. 14: pl. 19, figs. 7-8.

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum proëchus — Haas (1940)
— Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio proechus Bourguignat, 1862
Bourguignat, 1862. Rev. Mag. Zool. 14: pl. 19, figs. 1-3.
Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 31.

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio proëchus — Kobelt & Haas (1910)
Unio pictorum proëchus — Haas (1940)
— Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio limosus maxima Mörch, 1863
Mörch, 1863. Vidensk. Medd. Naturhist. Foren. Kjöben. (17-22): 341.
(intro'd as intra-sp. of Unio limosus Nilsson, 1822; homonym of Unio pictorum maxima Mörch, 1863)

Unio pictorum — He & Zhuang (2013)

Unio limosus pumila Mörch, 1863
Mörch, 1863. Vidensk. Medd. Naturhist. Foren. Kjöben. (17-22): 341.
(intro'd as intra-sp. of Unio limosus Nilsson, 1822; homonym of Unio pumilus Lea, 1838)

Unio pictorum — He & Zhuang (2013)

Unio danielis Gassies, 1867
Gassies, 1867. Arch. Soc. Linn. Bordeaux 25: 132, pl. 1, fig. 8.

Unio (sec. Lymnium) platyrinchoideus — Simpson (1900), Simpson (1914)
Unio requieni var. danielis — Germain (1931)
Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio proechistus Bourguignat, 1870
Bourguignat, 1870. Ann. Malacol. 1: 69.

Unio tumidus var. rostratus — Germain (1931)
Unio pictorum proëchistus — Haas (1940)
Unio pictorum proechistus — Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio pictorum — He & Zhuang (2013), Araujo et al. (2018)

Unio baudoni Folin & Bérillon, 1874
Folin & Bérillon, 1874. Bull. Soc. Bayonne: 93, text figs. 4-7.

Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio pictorum var. pachyodon Jordan, 1879
Jordan, 1879. Jb. Dtsch. Malak. Ges. 6: 304, pl. 8, fig. 1; pl. 9, fig. 5.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio schrenkianus Clessin, 1880
Clessin, 1880. Nachr. Bl. Dtsch. Malak. Ges. 12: 80.

Unio (s.s.) pictorum var. schrenkianus — Zhadin (1938)
Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum var. schrenkianus — Zhadin (1965)
Unio pictorum schrenkianus — Haas (1969), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio (s.s.) rostratus rostratus — Stadnichenko (1984)
Unio rostratus rostratus — Kantor & Sysoev (2005)
Unio pictorum — He & Zhuang (2013), Araujo et al. (2018)
Unio (s.s.) rostrata — Vinarski & Kantor (2016)

Unio balatonicus Servain, 1881
Servain, 1881. Malac. Lac Balaton: 101.
Servain, 1888. Bull. Soc. Malac. France 5: 322.

Unio pictorum latirostris — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio dubreili Servain, 1881
Servain, 1881. Malac. Lac Balaton: 98.

Unio pictorum latirostris — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio gaudioni Drouët, 1881
Drouët, 1881. J. de Conch. 29: 244.

Unio pictorum gaudioni — Haas (1940), Haas (1969), Schütt (1992), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio (s.s.) pictorum gaudioni — Falkner (1994), Bank (2006)
Unio pictorum — He & Zhuang (2013), Araujo et al. (2018), Lopes-Lima et al. (2021)

Unio berilloni Locard, 1882
Locard, 1882. Prodr. Malac. Franç. 1: 298, 365.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 174 [68].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 212.
Type(s): LECTOTYPE MNHN_22130 (by Graf, 2011: 462), lac d’Ondres (Basses-Pyrénées).

Unio tumidus — Germain (1931)
Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio cancrorum Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 296, 365.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 163 [57].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 195.
Bourguignat in Locard, 1899. Conchyliol. Portug.: 237.
Type(s): LECTOTYPE MNHN_22159 (by Graf, 2011: 466), la Saône, à Heuilly-sur-Saône (Côte-d’Or).

Unio (Joannisiana) cancrorum — Germain (1904)
Unio requieni var. pornae — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio corbini Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 293, 362.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 170 [64].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 199.
Type(s): POSSIBLE SYNTYPE MNHN_22181, l’Étang d’Église-Vieille, près de la Porge (Gironde).

Unio (Hispaniana) corbini — Germain (1904)
Unio requieni var. danielis — Germain (1931)
Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio fagoti Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 294, 362.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 171 [65].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 200.

Unio requieni var. danielis — Germain (1931)
Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio falsus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 295, 363.
Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 58.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 161 [55].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 195, fig. 210.
Type(s): LECTOTYPE MNHN_22209 (by Graf, 2011: 474), La Bonde-Gendret près Troyes (Aude).

Unio falsus — Rochebrune (1903)
Unio (Falsusiana) falsus — Germain (1904)
Unio (Groupe des Falsusiana) falsus — Caziot (1907)
Unio requieni var. pornae — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio gestroianus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 296, 365.
Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 51.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 159 [53].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 194, fig. 208.
Type(s): LECTOTYPE MNHN_22234 (by Graf, 2011: 476), La Saône, à Asnière.

Unio (Porniana) gestroianus — Germain (1904)
Unio triffoiricus — Germain (1931)
Unio pictorum rostratus — Haas (1940), Haas (1969)

Unio hauterivianus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 288, 358.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 150 [44].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 183.
‘Bourguignat’ Locard, 1899. Conchyliol. Portug.: 222.
Type(s): IDIOTYPE MNHN_22257, l'Agout, à Lavaur (Tarn).

Unio turtoni var. philippei [sic] — Germain (1931)
Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio jousseaumei Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 294, 363.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 169 [63].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 204, fig. 217.
Type(s): IDIOTYPE MNHN_22289, La Saône, à Auxonne (Côte-d’Or).

Unio limosus — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio milneedwardsi Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 287, 357 [as ‘milne-edwardsi’].
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 151 [45] [as ‘mine-edwardsi’].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 183.

Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio philippei Locard, 1882
‘Dupuy’ of Authors.
Locard, 1882. Prodr. Malac. Franç. 1: 284, 354.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 150 [44].
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 161.
Fagot, 1892. Bull. Soc. Ramond 27: 37.
Locard, 1893. Coqu. Eau Douce Saumâtre France: 183.
Germain, 1931. Faune de France 22: 732.
(new name for Unio philippii Dupuy, 1849)

Unio turtoni var. philippei [sic] — Germain (1931)
Unio pictorum platyrhynchoideus [sic] — Haas (1940), Haas (1969)

Unio platyrhynchoideus Locard, 1882
‘Dupuy’ of Authors.
Locard, 1882. Prodr. Malac. Franç. 1: 297.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 154 [48].
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 121.
Locard, 1893. Coqu. Eau Douce Saumâtre France: 187.
Germain, 1931. Faune de France 22: 739.
Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 123.
Haas, 1969. Das Tierreich 88: 27.
Fauna Europaea, 2012. Fauna Europa: [web].
(error for Unio platyrinchoideus Dupuy, 1849)

Unio requieni var. platyrhynchoideus [sic] — Germain (1931)

Unio renei Locard, 1882
Locard, 1882. Prodr. Malac. Franç. 1: 294, 362.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 156 [50].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 187.
Type(s): SYNTYPE MNHN_22492, Landes.

Unio requieni var. platyrhynchoideus [sic] — Germain (1931)
— Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio rostratellus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 297, 365.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 173 [67].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 208.
Type(s): IDIOTYPE MNHN_22496, La Seine à Rouen (Seine-Inférieure).

Unio (Rostratiana) rostratellus — Germain (1904)
Unio tumidus var. rostratus — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio rhynchetinus Bourguignat, 1883
Letourneux, in litt. Servain, 1882. Hist. Moll. Acéph. Francfort: 24 [as ‘rynchetinus’]. [nomen nudum]
Letourneux in Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 61.

Unio (Rostratiana) rhynchetinus — Germain (1904)
Unio tumidus — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio cavarellus Servain, 1887
Servain, 1887. Bull. Soc. Malac. France 4: 256.
Servain, 1888. Bull. Soc. Malac. France 5: 319.

Unio requieni var. pornae — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio moussonianus Clessin, 1887
Clessin, 1887. Moll.-Fauna Mitteleuropas 2: ??.
(homonym of Unio moussonianus Lea, 1852)

Unio pictorum moussonianus — Kobelt & Haas (1910), Haas (1940)

Unio strigatus Servain, 1887
Servain, 1887. Bull. Soc. Malac. France 4: 257.

Unio requieni var. pornae — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio charpyi Drouët, 1888
Drouët, 1888. J. de Conch. 36: 105.
Drouët, 1889. Mém. Acad. Sci. Dijon 1: 55, pl. 2, fig. 1.

Unio requieni var. pornae — Germain (1931)
Unio pictorum rostratus — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio occidaneus Drouët, 1888
Drouët, 1888. J. de Conch. 36: 104.

Unio tumidus — Germain (1931)
Unio elongatulus bourgeticus — Haas (1940), Haas (1969)
Unio mancus bourgeticus — Prie (2012)

Unio subbalatonicus Servain, 1888
Bourguignat in Servain, 1888. Bull. Soc. Malac. France 5: 322.

Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio brebissoni Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [46], 223 [117].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 185, fig. 199.
Type(s): LECTOTYPE MNHN_22143 (by Graf, 2011: 464), l’Aure, à Bayeux (Calvados).

Unio villae — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio brindosopsis Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 151 [45], 221 [115].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 184, fig. 197.
Type(s): LECTOTYPE MNHN_22148 (by Graf, 2011: 465), la Vienne, à Limoges.

Unio turtoni var. philippei [sic] — Germain (1931)
— Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio cristulatus Drouët, 1889
Drouët, 1889. Mém. Acad. Sci. Dijon 1: 63, pl. 1, fig. 1.

Unio requieni var. pornae — Germain (1931)
Unio pictorum rostratus — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio hopitali Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [45], 224 [118].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 186 [as ‘hospitali’].
Type(s): SYNTYPE MNHN_22263, May (Calvados).

Unio hopitali — Rochebrune (1903)
Unio villae — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio lesumicus Locard, 1889
Michaud, 1831. Compl. Hist. Nat. Moll., Draparnaud: 108, pl. 16, fig. 25.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 158 [52], 236 [130].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 194.
Type(s): SYNTYPE MNHN_22308, Vegesack, près Brême.

Unio requieni var. pornae — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio lugdunicus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 168 [62], 247 [141].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 209.
Type(s): LECTOTYPE MNHN_22318 (by Graf, 2011: 485), Les fossés du fort de la Vitriolerie, à Lyon.

Unio tumidus var. rostratus — Germain (1931)
Unio pictorum rostratus — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio macropisthus Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 172 [66], 258 [152].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 210.
(homonym of Unio macropisthus White, 1886)
Type(s): LECTOTYPE MNHN_22321 (by Graf, 2011: 486), La Seine à Rouen (Seine-Inférieure).

Unio tumidus var. rostratus — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio moriscottei Folin, 1889
Folin, 1889. Le Naturaliste 1: 295, text fig. 3.

Unio moriscottei — Kobelt (1902)
Unio pictorum platyrhynchoideus [sic] — Haas (1940)
Unio pictorum mucidus — Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio mucidellus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 160 [54], 239 [133].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 193, fig. 207.
Type(s): SYNTYPE MNHN_22378, l’Aroz, à Saint-Maurice (Nièvre).

Unio mucidellus — Rochebrune (1903)
Unio requieni — Germain (1931)
Unio elongatulus bourgeticus — Haas (1940), Haas (1969)
Unio mancus bourgeticus — Prie (2012)

Unio perroudi Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 164 [58], 242 [136].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 209.
Type(s): LECTOTYPE MNHN_22454 (by Graf, 2011: 497), fort de la Vitriolerie, à Lyon.

Unio tumidus var. rostratus — Germain (1931)
Unio pictorum rostratus — Haas (1940), Haas (1969)
Unio crassus batavus — Haas (1940)
Unio pictorum — He & Zhuang (2013)

Unio siliquiformis Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 173 [67], 259 [153].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 208.
Type(s): LECTOTYPE MNHN_22538 (by Graf, 2011: 504), Heuilley-sur-Saône (Côte-d’Or).

Unio tumidus var. rostratus — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio rostratus var. episemus Westerlund, 1890
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 105.
(intro'd as intra-sp. of Unio rostrata Lamarck, 1819)

Unio hospitali Locard, 1893
‘Locard’ of Authors.
Locard, 1893. Coqu. Eau Douce Saumâtre France: 186.
Germain, 1931. Faune de France 22: 735.
Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 121.
(error for Unio hopitali Locard, 1889)

Unio octavius Locard, 1893
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 203.

Unio requieni var. pornae — Germain (1931)
— Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio rectus Locard, 1893
Locard, 1893. Coqu. Eau Douce Saumâtre France: 207.
(homonym of Unio recta Lamarck, 1819)
Type(s): LECTOTYPE MNHN_22485 (by Graf, 2011: 500), La Rhône à Vienne (Isère).

Unio rectus — Rochebrune (1903)
Unio requieni var. pornae — Germain (1931)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio limosus var. madranus Gredler, 1894
Gredler, 1894. Slebstvelag der Lehranstalt 8: ??.
(intro'd as intra-sp. of Unio limosus Nilsson, 1822)

Unio elongatulus — Marrone et al. (2019)

Unio pictorum var. battonensis Kobelt, 1894
Kobelt, 1894. Jb. Nassau. Ver. Naturk. 47: 88, pl. 4, figs. 1-3.
Kobelt, 1896. Icon. Land- und Süssw.-Moll. 7: 42, pl. 191, figs. 1208-1209.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio pictorum pictorum — Haas (1940), Haas (1969)

Unio ruginosus Drouët, 1898
Drouët, 1898. Mém. Acad. Sci. Dijon ??: 743.

Unio tumidus var. rostratus — Germain (1931)
Unio pictorum — He & Zhuang (2013)

Unio rostratus var. falcatus Drouët, 1898
Drouët, 1898. Mém. Acad. Sci. Dijon ??: 89.
(intro'd as intra-sp. of Unio rostrata Lamarck, 1819)

Unio tumidus var. rostratus — Germain (1931)
Unio pictorum — He & Zhuang (2013)

Unio desfontainianus Locard, 1899
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 162 [58]. [nomen nudum]
Bourguignat in Locard, 1899. Conchyliol. Portug.: 237.

Unio pictorum — He & Zhuang (2013)

Unio mycrodactylus Locard, 1899
Fagot in Locard, 1889. Contr. Faune Malacol. Franc. 13: 169 [63] [as ‘microdactylus’]. [nomen nudum]
Fagot in Locard, 1899. Conchyliol. Portug.: 240.

Unio pictorum — He & Zhuang (2013)

Unio oeschrus Locard, 1899
Casrtro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 146 [40] [as ‘œschrus’]. [nomen nudum]
Castro in Locard, 1899. Conchyliol. Portug.: 219 [as ‘œschrus’].

Unio pictorum mucidus — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio joannisi var. nigra Germain, 1904
Germain, 1904. Bull. Soc. Sci. Nat. Ouest France 4: 274 [36].
(homonym of Unio (Elliptio) nigra Rafinesque, 1820; intro'd as intra-sp. of Unio joannisi Locard, 1882)

Unio (Joannisiana) joannisi var. nigra — Germain (1904)

Unio tumens var. major Germain, 1904
Germain, 1904. Bull. Soc. Sci. Nat. Ouest France 4: 277 [39].
(homonym of Unio (Anodontes) sirionos var. major d’Orbigny, 1835; intro'd as intra-sp. of Unio pictorum var. tumens de Joannis, 1859)

Unio (Vincelotiana) tumens major — Germain (1904)

Unio pictorum var. okae Kobelt & Haas, 1910
Kobelt & Haas, 1910. Icon. Land- und Süssw.-Moll. 17: 58, index, pl. 480, figs. 2563-2564.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758; homonym of Unio crassus var. okae Kobelt & Haas, 1910; renamed Unio pictorum var. okensis Zhadin, 1938)

Unio (s.s.) pictorum var. okensis — Zhadin (1938)
Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum schrenkianus — Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio (? requienii var.) voltzii Kobelt & Haas, 1910
Kobelt & Haas, 1910. Icon. Land- und Süssw.-Moll. 17: 34, pl. 467, figs. 2516-2517.
(intro'd as intra-sp. of Unio requienii Michaud, 1831)

Unio (? requienii var.) voltzii — Kobelt & Haas (1910)
Unio elongatulus bourgeticus — Haas (1940), Haas (1969)
Unio mancus bourgeticus — Prie (2012)

Unio gentilis Hesse, 1911
Haas in Hesse, 1911. Nachr. Bl. Dtsch. Malak. Ges. 43: 151.

Unio (s.s.) pictorum gentilis — Zhadin (1938)
Unio pictorum gaudioni — Haas (1940), Haas (1969), Schütt (1992), Fauna Europaea (2012)
Unio (s.s.) rostratus gentilis — Stadnichenko (1984)
Unio rostratus gentilis — Kantor & Sysoev (2005), Kantor et al. (2010)
Unio pictorum — He & Zhuang (2013), Lopes-Lima et al. (2021)
Unio (s.s.) rostrata — Vinarski & Kantor (2016)

Unio (Limosus) annulatus Kobelt, 1912
Kobelt, 1912. Icon. Land- und Süssw.-Moll. 18: 28, pl. 492, fig. 2828.

Unio (s.s.) pictorum var. annulatus — Zhadin (1938)
Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum schrenkianus — Haas (1969)
Unio annulatus — Kantor et al. (2010)
Unio pictorum — He & Zhuang (2013)

Unio ascanius Kobelt, 1913
Kobelt, 1913. Icon. Land- und Süssw.-Moll. 19: 43, pl. 532, fig. 2741.

Unio pictorum ascanius — Haas (1940), Haas (1969), Fauna Europaea (2012)
Unio pictorum gaudioni — Schütt (1992)
Unio pictorum — He & Zhuang (2013), Araujo et al. (2018), Lopes-Lima et al. (2021)

Unio limosus helveticus Zwiesele, 1913
Zwiesele, 1913. Unio pictorum L., in der Schweiz: 9, pl. 5, alle figuren.
(intro'd as intra-sp. of Unio limosus Nilsson, 1822)

Unio pictorum pictorum — Haas (1969)

Unio limosus lacustris Zwiesele, 1913
Zwiesele, 1913. Unio pictorum L., in der Schweiz: 7, pl. 2, and numerous others.
(intro'd as intra-sp. of Unio limosus Nilsson, 1822; homonym of Unio tumidus var. lacustris Rossmässler, 1854)

Unio pictorum pictorum — Haas (1969)

Unio eucallistus Kobelt, 1915
Kobelt, 1915. Icon. Land- und Süssw.-Moll. 20: 13, pl. 544. fig. 2778.

Unio pictorum latirostris — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio kalmykorum Bogachev, 1924
Bogachev, 1924. unknown publication: 41.

Unio (s.s.) kalmykorum — Zatravkin (1983)
Unio annulatus — Kantor et al. (2010)

Unio pictorum schrenckianus var. dicki Modell, 1930
Modell, 1930. Arch. Moll. 62: 226. [infra-subsp.]
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum schrenkianus — Haas (1969)

Unio michaudi Germain, 1931
Germain, 1931. Faune de France 22: 744.
(new name for Unio michaudiana Des Moulins, 1833)

Unio michaudi — Germain (1931)

Unio protractus Lindholm, 1932
Lindholm, 1932. Trudy Vses. Geologo-Razvedo. Ob. 239: 24, pl. 4, figs. 16-18.

Unio protractus — Starobogatov et al. (2004), Kantor & Sysoev (2005), Kantor et al. (2010)
Unio pictorum — Graf (2007), Klishko et al. (2017), Bogatov et al. (2018), Anisimova et al. (2018)
Unio (s.s.) protractus — Vinarski & Kantor (2016)
Unio pictorum protractus — Bogatov (2022)

Unio lindholmi Zhadin, 1938
Zhadin, 1938. Faune USSR Mollusques 4(1): 97, text fig. 29.

Unio (s.s.) lindholmi — Zhadin (1938)
Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum — Zhadin (1965), He & Zhuang (2013)
Unio pictorum schrenkianus — Haas (1969)
— Vinarski & Kantor (2016)

Unio pictorum var. defectivus Zhadin, 1938
Zhadin, 1938. Faune USSR Mollusques 4(1): 79.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio (s.s.) pictorum defectivus — Zhadin (1938)
Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum schrenkianus — Haas (1969)
Unio pictorum — He & Zhuang (2013)

Unio pictorum var. okensis Zhadin, 1938
Zhadin, 1938. Faune USSR Mollusques 4(1): 77.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758; new name for Unio pictorum var. okae Kobelt & Haas, 1910)

Unio (s.s.) pictorum var. okensis — Zhadin (1938)
Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum schrenkianus — Haas (1969)
Unio pictorum pictorum — Kantor & Sysoev (2005)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio pictorum var. pygmaeus Zhadin, 1938
Zhadin, 1938. Faune USSR Mollusques 4(1): 78, text fig. 17.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758; homonym of Unio pygmaeus Lea, 1852)

Unio (s.s.) pictorum var. pygmaeus — Zhadin (1938)
Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum var. pygmaeus — Zhadin (1965)
Unio pictorum schrenkianus — Haas (1969)
Unio pictorum pictorum — Kantor & Sysoev (2005)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio limosus behningi Starobogatov & Pirogov, 1970
Starobogatov & Pirogov, 1970. unknown publication: 229-230, fig. 2.
(intro'd as intra-sp. of Unio limosus Nilsson, 1822)

Unio limosus limosus — Kantor & Sysoev (2005)
Unio limosus behningi — Kantor et al. (2010)
Unio pictorum limosus — Bogatov (2022)

Unio pictorum tisianus Nesemann, 1993
Nesemann, 1993. Nach. Erst. Vorarlb. Mala. Ges. 1: 23, fig’d.
Nesemann, 1994. Nach. Erst. Vorarlb. Mala. Ges. 2: 49, fig’d.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio (s.s.) pictorum tisianus — Falkner et al. (2001)
Unio pictorum pictorum — Lopes-Lima et al. (2017)

Unio compressus of Authors, unknown year
Jeffr. 1862 of Authors.
(homonym of Unio compressus Sowerby, 1829)

Unio levigatus of Authors, unknown year
Küster of Authors.

Unio ventrosus of Authors, unknown year
Küster of Authors.

Mya augusta Klein, 1753
Klein, 1753. Tent. Method. Ostrac., etc.: ??. [pre-linnaean]

Mya margaritica Klein, 1753
Klein, 1753. Tent. Method. Ostrac., etc.: ??. [pre-linnaean]

Mya angustata Schröter, 1779
Schröter, 1779. Gesch. Flußconch.: 184, pl. 3, fig. 3. [pre-linnaean]

Mya corrugata maroccana Martini & Chemnitz, 1782
Martini & Chemnitz, 1782. Conchyl. Cab. 6: 32, pl. 3, figs. 23-24. [non-binomial]

Unio pictorum — He & Zhuang (2013)

Mya ovalis Retzius, 1788
Retzius, 1788. Diss. Nat.-Hist. Test. Gen.: ??.
Donovan, 1801. Brit. Shells 3: pl. 89.
(misidentified reference to Mya ovalis Lightfoot, 1786)

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio pictorum Pfeiffer, 1821
Pfeiffer, 1821. Natur. Deutsch. Land Sussw. Moll. 1: 115, t. 5. f. 10.
(reference to Mya pictorum Linnaeus, 1758)

Unio limovianscae Lea, 1836
‘Fer.’ Lea, 1836. Synopsis Fam. Naiades: 37.
(intro'd as syn of Mya pictorum Linnaeus, 1758)

Unio rostrata Bouill., 1836
Bouill., 1836. Cat. Moll. Auv.: 81. [nomen nudum]

Unio pictorum — He & Zhuang (2013)

Unio pictorum Rossmässler, 1836
Rossmässler, 1836. Icon. Land- und Süssw.-Moll. 1 (3): pl. 13, fig. 196.
Rossmässler, 1839. Icon. Land- und Süssw.-Moll. 2 (3-4): pl. 45, fig. 587.
(reference to Mya pictorum Linnaeus, 1758)

Unio pictorum Rossmässler, 1837
Rossmässler, 1837. Icon. Land- und Süssw.-Moll. 1 (5-6): 55, pl. 29, fig. 409.
(reference to Mya pictorum Linnaeus, 1758)

Unio tumidus var. rostratus — Germain (1931)

Mysca pictorum var. cuneata Schlüter, 1838
Schlüter, 1838. Kurzgef. Syst. Verz. Conch. Samml.: 33. [nomen nudum]

Mysca pictorum var. gotthardensis Schlüter, 1838
Schlüter, 1838. Kurzgef. Syst. Verz. Conch. Samml.: 33. [nomen nudum]
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio pictorum — He & Zhuang (2013)

Unio platyrrhinchus Hanley, 1843
‘Rossm.’ Hanley, 1843. Illustr. Descr. Cat. Rec. Bivalve Shells: 205.
(error for Unio platyrhynchus Rossmässler, 1835)

Unio rostrata Gras, 1846
‘Mich.’ Gras, 1846. Descript. moll. fluv. et terr. l'Isère: 71.
(reference to Unio rostratus Michaud, 1831)

Unio platyrhyncus C.B. Adams, 1847
‘Rossm.’ C.B. Adams, 1847. Cat. Gen. Sp. Adams: 14.
(error for Unio platyrhynchus Rossmässler, 1835)

Unio requieni Gassies, 1849
‘Michaud’ Gassies, 1849. Moll. Agenais: pl. 1, figs. 5-6.
(misidentified reference to Unio requienii Michaud, 1831)

Unio (sec. Lymnium) turtoni — Simpson (1900)
Unio requieni var. rousi — Germain (1931)

Unio michaudii Zelebor, 1851
‘Desm.’ Zelebor, 1851. Ber. Mit. Freunde Naturw. Wien 7: 230, sp. 4.
(error for Unio michaudiana Des Moulins, 1833)

Unio pictorum var. flavus Zelebor, 1851
Zelebor, 1851. Ber. Mit. Freunde Naturw. Wien 7: 230, sp. 2. [nomen nudum]
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio castaneus Lea, 1852
‘Mül.’ Lea, 1852. Synopsis Fam. Naiades: 37.
(intro'd as syn of Mya pictorum Linnaeus, 1758)

Unio curvirostris Dupuy, 1852
‘Norm. in litt.’ Dupuy, 1852. Hist. Natur. Moll. France (6): 648. [nomen nudum]
(intro'd as syn of Mya pictorum Linnaeus, 1758)

Unio pictorum — He & Zhuang (2013)

Unio pictorum Dupuy, 1852
Dupuy, 1852. Hist. Natur. Moll. France (6): pl. 26, fig. 20.
(reference to Mya pictorum Linnaeus, 1758)

Unio (Joannisiana) cancrorum — Germain (1904)
Unio requieni var. pornae — Germain (1931)
Unio pictorum — He & Zhuang (2013)

Unio platyrinchus Bourguignat, 1853
‘Rossmässler’ Bourguignat, 1853. Catalogue Raissoné des Mollusques Terrestres et Fluviatiles Recueillis par M.F. Saulcy 1853: 76.
(error for Unio platyrhynchus Rossmässler, 1835)

Unio pallens Küster, 1854
‘Parreiss’ Küster, 1854. Conchyl. Cab. 9(2): 95, pl. 25, fig. 5; pl. 26, fig. 1.
(misidentified reference to Unio pallens Rossmässler, 1842)

Unio (sec. Lymnium) pictorum — Simpson (1900), Simpson (1914)
Unio pictorum — He & Zhuang (2013)

Unio requienii Drouët, 1857
‘Mich.’ Drouët, 1857. Étud. Naïades. France, Unio: 93, pl. 7, fig. 1.
(misidentified reference to Unio requienii Michaud, 1831)

Unio pictorum — He & Zhuang (2013)

Unio pictorum de Joannis, 1859
de Joannis, 1859. Ann. Soc. Linn. Maine-et-Loire 3: pl. 11, fig. 8.
(reference to Mya pictorum Linnaeus, 1758)

Unio (Porniana) pornae — Germain (1904)
Unio requieni var. pornae — Germain (1931)

Unio pictorum var. longirostris de Joannis, 1859
de Joannis, 1859. Ann. Soc. Linn. Maine-et-Loire 3: pl. 12, fig. 3.
(reference to Unio longirostris Rossmässler, 1836)

Unio (Hispaniana) corbini — Germain (1904)
Unio requieni var. danielis — Germain (1931)
Unio pictorum — He & Zhuang (2013)

Unio pictorum var. milleti de Joannis, 1859
de Joannis, 1859. Ann. Soc. Linn. Maine-et-Loire 3: 293, pl. 12, fig. 1.
(reference to Unio pictorum var. milleti Moquin-Tandon, 1855)

Unio (Porniana) gestroianus — Germain (1904)
Unio pictorum — He & Zhuang (2013)

Unio platyrrhinchoideus Sowerby, 1868
‘Dupuy’ Sowerby, 1868. Conch. Icon. 16: pl. 70, sp. 358.
(error for Unio platyrinchoideus Dupuy, 1849)

Unio (sec. Lymnium) platyrinchoideus — Simpson (1900)

Unio actaphilus Lea, 1870
‘Bourg.’ Lea, 1870. Synopsis Fam. Naiades: 59.
(error for Unio actephilus Bourguignat, 1862)

Unio requienii Dupuy, 1878
Dupuy, 1878. J. de Conch. 25: 18.
(misidentified reference to Unio requienii Michaud, 1831)

Unio requieni var. danielis — Germain (1931)
Unio pictorum — He & Zhuang (2013)

Unio cumensis Kobelt, 1879
Kobelt, 1879. Icon. Land- und Süssw.-Moll. 7: pl. 192, fig. 1953. [in part]
(misidentified reference to Unio cumensis Kobelt, 1879)

Unio rynchetinus Servain, 1882
Letourneux, in litt. Servain, 1882. Hist. Moll. Acéph. Francfort: 24.
(error for Unio rhynchetinus Bourguignat, 1883)

Unio tumidus — Germain (1931)

Unio tumeus Locard, 1882
‘de Joannis’ Locard, 1882. Prodr. Malac. Franç. 1: 298.
(error for Unio pictorum var. tumens de Joannis, 1859)

Unio (Vincelotiana) tumens — Germain (1904)

Unio mancus var. sabaudina Locard, 1882
Locard, 1882. Prodr. Malac. Franç. 1: 359.
(intro'd as intra-sp. of Unio manca Lamarck, 1819; misidentified reference to Unio amnicus var. sabaudina Bourguignat, 1864)

Unio mancus — Germain (1931)
Unio elongatulus bourgeticus — Haas (1940), Haas (1969), Fauna Europaea (2012)
Unio mancus bourgeticus — Prie (2012)

Unio macropsisthus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 258 [152].
(error for Unio macropisthus Locard, 1889)

Unio microdactylus Locard, 1889
Fagot in Locard, 1889. Contr. Faune Malacol. Franc. 13: 169 [63].
(error for Unio mycrodactylus Locard, 1899)

Unio mineedwardsi Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 151 [45].
(error for Unio milneedwardsi Locard, 1882)

Unio milnedwarsi Fagot, 1892
‘Bourguignat’ Fagot, 1892. Bull. Soc. Ramond 27: 38 [as ‘milne-edwarsi’].
(error for Unio milneedwardsi Locard, 1882)

Unio limosus Kobelt, 1893
‘Nils.’ Kobelt, 1893. Icon. Land- und Süssw.-Moll. 6: 44.
(reference to Unio limosus Nilsson, 1822)

Unio (sec. Lymnium) platyrhynchus — Simpson (1900), Simpson (1914)

Unio pictorum var. C. parvula Kobelt & Haas, 1910
‘Brot, Mss.’ Kobelt & Haas, 1910. Icon. Land- und Süssw.-Moll. 17: 31.
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758; intro'd as syn of Unio moussonianus Clessin, 1887)

Unio pictorum moussonianus — Kobelt & Haas (1910)

Unio requieni var. rostrata Germain, 1931
‘de Joannis’ Germain, 1931. Faune de France 22: 734.
(error for Unio requieni var. rostralis de Joannis, 1859)

Unio caravellus Haas, 1940
‘Servain’ Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 121.
‘Servain’ Haas, 1969. Das Tierreich 88: 23.
(error for Unio cavarellus Servain, 1887)

Unio jousseaumi Haas, 1940
‘Bourguignat’ Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 121.
(error for Unio jousseaumei Locard, 1882)

Unio platyodon Haas, 1940
‘Jordan’ Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 121.
(error for Unio pictorum var. pachyodon Jordan, 1879)

Unio schrenckianus Haas, 1940
‘Clessin’ Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 122.
(error for Unio schrenkianus Clessin, 1880)

Unio (Unio) pictorum ssp. [Lacs des Landes] Falkner et al., 2002
Falkner et al., 2002. Patrim. Natur. 52: 55. [nomen nudum]
(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)

Unio (s.s.) pictorum ssp. [Lacs des Landes] — Falkner et al. (2002)

Unio pictorum platyrhinchoideus Prié & Puillandre, 2014
‘Dupuy’ Prié & Puillandre, 2014. Hydrobiologia 735(1): [4].
(error for Unio platyrinchoideus Dupuy, 1849)

Unio malzani Vinarski & Kantor, 2016
‘Küster’ Vinarski & Kantor, 2016. Analyt. Cat. Fr. Brack. Moll. Russia: 22.
(error for Unio maltzani Küster, 1854)