species Unio pictorum (Linnaeus, 1758): synonymy

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.
SYNTYPES LS_28, “Habitat in Europae fluviis.”.

Unio (sec. Lymnium) pictorum — Simpson (1900)
Unio pictorum — Kobelt (1904), Kobelt & Haas (1910), Ortmann (1912), Ortmann (1914), Haas (1924), ... Campbell & Lydeard (2026), Wu et al. (2026), Prie et al. (2026), Lawrie et al. (2026), Li et al. (2026)
Unio (sec. Lymnium) (Group U. pictorum) pictorum — Simpson (1914)
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), Gozhik (2006)
Unio cf. pictorum — Nishihara et al. (2016)

Mya nodosa Gmelin, 1791

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

Unio (sec. Lymnium) pictorum — Simpson (1900)
Unio (sec. Lymnium) (Group U. pictorum) pictorum — 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)
Unio (sec. Lymnium) (Group U. pictorum) pictorum — Simpson (1914)
Unio tumidus var. rostratus — Germain (1931)
Unio pictorum rostratus — Haas (1940), R.I. Johnson (1953), 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 nodulosa Lamarck, 1819

(new name for Mya nodosa Gmelin, 1791)
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.

Unio (sec. Lymnium) pictorum — Simpson (1900)
Unio (sec. Lymnium) (Group U. pictorum) pictorum — Simpson (1914)
Unio pictorum — He & Zhuang (2013)
Unio (s.s.) pictorum — 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)
Unio (Rostratiana) limosus — Germain (1904)
Unio (sec. Lymnium) (Group U. pictorum) pictorum — Simpson (1914)
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.
FIGURED SYNTYPE MNHN-IM-2000-1674, Quimper (Finestre).

Unio (sec. Lymnium) pictorum — Simpson (1900)
Unio (sec. Lymnium) (Group U. pictorum) pictorum — 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

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

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

Unio picta Say, 1831

(error for Mya pictorum Linnaeus, 1758)
‘L.’ Say, 1831. Amer. Conch. 1(2): pl. 11.

Unio michaudiana Des Moulins, 1833

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

Unio (sec. Lymnium) pictorum — Simpson (1900)
Unio (sec. Lymnium) (Group U. pictorum) pictorum — 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.
LECTOTYPE SMF 10683 (by Zilch, 1967: 78), Glanfurt River, Klagenfurter, Austria.

Unio (sec. Lymnium) platyrhynchus — Simpson (1900)
Unio (sec. Lymnium) (Group U. pictorum) platyrhynchus — 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), Nagel (2025)
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) (Group U. pictorum) 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 pictorum var. grandis Rossmässler, 1842

(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)
‘A. Braun.’ Rossmässler, 1842. Icon. Land- und Süssw.-Moll. 2 (5): 14, pl. 55, fig. 741.
LECTOTYPE SMF 10677 (by Zilch, 1967: 76), pond near Karlsruhe, Germany.

Unio pictorum latirostris — Haas (1913)
Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013), Nagel (2025)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio ponderosus Rossmässler, 1842

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

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 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)
Unio (sec. Lymnium) (Group U. pictorum) platyrinchoideus — 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 philippii Dupuy, 1849

(renamed Unio philippei ‘Dupuy’ of Authors)
Dupuy, 1849. Cat. Extramar. Galliae Test.: 335.
Dupuy, 1852. Hist. Natur. Moll. France (6): 654, pl. 28, fig. 19.

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

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 latirostris Küster, 1853

Küster, 1853. Conchyl. Cab. 9(2): 86, pl. 22, figs. 5-6.
SYNTYPE SMF 10785, Altmühl River, Bayern, Germany.

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), Nagel (2025)
Unio (s.s.) pictorum — Vinarski & Kantor (2016)

Unio arca ‘Held in sched.’ Küster, 1853

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

Unio pictorum latirostris — Haas (1940), Haas (1969)
Unio pictorum — He & Zhuang (2013), Nagel (2025)

Unio decollatus ‘Held in sched.’ 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 maltzani Küster, 1854

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

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

Unio quinqueannulatus Küster, 1854

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

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

Unio concinnus Küster, 1854

(intro'd as syn of Unio quinqueannulatus Küster, 1854; homonym of Unio concinnus J. de C. Sowerby, 1819)
Küster, 1854. Conchyl. Cab. 9(2): 93.

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

Unio nathusii Küster, 1854

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

Unio pictorum — He & Zhuang (2013)

Unio pallens var. albina Küster, 1854

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

Unio pictorum — He & Zhuang (2013)

Unio pictorum var. radiatus Moquin-Tandon, 1855

(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758; homonym of Unio (Elliptio) viridis var. radiata Rafinesque, 1820)
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.

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

Unio pictorum var. flavescens Moquin-Tandon, 1855

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

Unio pictorum — He & Zhuang (2013)

Unio pictorum var. milleti Moquin-Tandon, 1855

(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)
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.

Unio pictorum — He & Zhuang (2013)

Limnoica linearis Gray, 1857

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

Unio pictorum var. tumens de Joannis, 1859

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

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 pictorum l’Hôpital, 1859

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

Unio villae — Germain (1931)

Unio requieni var. rostralis de Joannis, 1859

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

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

Unio baletonicus ‘Ziegler in litt.’ Küster, 1861

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

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

Unio limosus maxima Mørch, 1863

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

Unio pictorum — He & Zhuang (2013)

Unio limosus pumila Mørch, 1863

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

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)
Unio (sec. Lymnium) (Group U. pictorum) platyrinchoideus — 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), Nagel (2025)

Unio pictorum var. pachyodon Jordan, 1879

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

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

Unio kruperi Drouët, 1879

Kobelt, 1878. Icon. Land- und Süssw.-Moll. 6: 42, pl. 162, figs. 1644-1645 [as ‘Unio elongatulus’].
Drouët, 1879. J. de Conch. 27: 140.
SYNTYPE SMF 10718, Lake Trichonida, Greece.

Unio elongatulus kruperi — Haas (1940)
Unio elongatulus pallens — Haas (1969)
Unio (s.s.) mancus kruperi — Falkner (1994), Bank (2006)
Unio pictorum — Nagel (2025)

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 jousseaumei Bourguignat in 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.
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 cancrorum Bourguignat in 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.
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 rostratellus Bourguignat in 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.
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 falsus Bourguignat in 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.
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 Bourguignat in 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.
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 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.
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 hauterivianus Bourguignat in 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.
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 corbini Bourguignat in 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.
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 milneedwardsi Bourguignat in 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 fagoti Bourguignat in 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 philippei ‘Dupuy’ of Authors

(new name for Unio philippii Dupuy, 1849)
‘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.

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

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.
SYNTYPE MNHN_22492, Landes.

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

Unio platyrhynchoideus ‘Dupuy’ of Authors

(error for Unio platyrinchoideus Dupuy, 1849)
‘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].

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

Unio rhynchetinus Letourneux in 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 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 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

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

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

Unio subbalatonicus Bourguignat in 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 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 lesumicus Bourguignat in 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.
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 brebissoni Locard, 1889

Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [46], 223 [117].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 185, fig. 199.
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 siliquiformis Locard, 1889

Locard, 1889. Contr. Faune Malacol. Franc. 13: 173 [67], 259 [153].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 208.
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 macropisthus Locard, 1889

(homonym of Unio macropisthus White, 1886)
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 172 [66], 258 [152].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 210.
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 hopitali Locard, 1889

Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [45], 224 [118].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 186 [as ‘hospitali’].
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 lugdunicus Bourguignat in Locard, 1889

Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 168 [62], 247 [141].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 209.
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 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 perroudi Locard, 1889

Locard, 1889. Contr. Faune Malacol. Franc. 13: 164 [58], 242 [136].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 209.
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 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 Bourguignat in 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.
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 brindosopsis Locard, 1889

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

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

Unio rostratus var. episemus Westerlund, 1890

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

Unio rectus Locard, 1893

(homonym of Unio recta Lamarck, 1819)
Locard, 1893. Coqu. Eau Douce Saumâtre France: 207.
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 hospitali ‘Locard’ of Authors

(error for Unio hopitali Locard, 1889)
‘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.

Unio octavius Locard, 1893

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

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

Unio (pictorum var.) battonensis Kobelt, 1894

(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)
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.
LECTOTYPE SMF 10695 (by Zilch, 1967: 76), Eder River, Battenberg, Germany.

Unio pictorum pictorum — Haas (1940), Haas (1969)
Unio pictorum — Nagel (2025)

Unio limosus var. madranus Gredler, 1894

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

Unio elongatulus — Marrone et al. (2019)

Unio rostratus var. falcatus Drouët, 1898

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

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

Unio ruginosus Drouët, 1898

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

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

Unio oeschrus Castro in 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 desfontainianus Bourguignat in 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 Fagot in 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 joannisi var. nigra Germain, 1904

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

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

Unio tumens var. major Germain, 1904

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

Unio (Vincelotiana) tumens major — Germain (1904)

Unio pictorum var. okae Kobelt & Haas, 1910

(homonym of Unio crassus var. okae Kobelt & Haas, 1910; renamed Unio pictorum var. okensis Zhadin, 1938; intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)
Kobelt & Haas, 1910. Icon. Land- und Süssw.-Moll. 17: 58, index, pl. 480, figs. 2563-2564.
LECTOTYPE SMF 10673 (by Zilch, 1967: 79), Oka River, Serpukhov, Russia.

Unio (s.s.) pictorum var. okensis — Zhadin (1938)
Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum schrenkianus — Haas (1969)
Unio pictorum — He & Zhuang (2013), Nagel (2025)

Unio gentilis Haas in Hesse, 1911

Haas in Hesse, 1911. Nachr. Bl. Dtsch. Malak. Ges. 43: 151.
LECTOTYPE SMF 10747 (by Zilch, 1967: 77), Maritsa River, Plovdiv, Bulgaria.

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), Nagel (2025)
Unio (s.s.) rostrata — Vinarski & Kantor (2016)

Unio (limosus) annulatus Kobelt, 1912

(intro'd as intra-sp. of Unio limosus Nilsson, 1822)
Kobelt, 1912. Icon. Land- und Süssw.-Moll. 18: 28, pl. 492, fig. 2828.
HOLOTYPE SMF 10690, Ilek River, at Bestamak, Kazakhstan.

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), Nagel (2025)

Unio limosus lacustris Zwiesele, 1913

(intro'd as intra-sp. of Unio limosus Nilsson, 1822; homonym of Unio tumidus var. lacustris Rossmässler, 1838)
Zwiesele, 1913. Unio pictorum L., in der Schweiz: 7, pl. 2, and numerous others.

Unio pictorum pictorum — Haas (1969)

Unio limosus helveticus Zwiesele, 1913

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

Unio pictorum pictorum — Haas (1969)

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 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. Trudy Geologicheskago Komiteta, novaya seriya 135: 152, pl. 5, figs. 1-3.

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

Unio pictorum schrenckianus var. dicki Modell, 1930

(intro'd as intra-sp. of Mya pictorum Linnaeus, 1758)
Modell, 1930. Arch. Moll. 62: 226. [infra-subsp.]
HOLOTYPE (INFRASUBSPECIFIC) ZSM MOL 20041254, Tolyatti, Russia.

Unio pictorum schrenckianus [sic] — Haas (1940)
Unio pictorum schrenkianus — Haas (1969)
Unio pictorum — Nagel (2025)

Unio michaudi Germain, 1931

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

Unio michaudi — Germain (1931)

Unio protractus Lindholm, 1932

Lindholm, 1932. Trudy Vses. Geologo-Razvedo. Ob. 238: 24, pl. 4, figs. 16-18.

Unio protractus — Lindholm (1932), 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 protractus subpictorum Lindholm, 1932

(intro'd as intra-sp. of Unio protractus Lindholm, 1932)
Lindholm, 1932. Trudy Vses. Geologo-Razvedo. Ob. 239: 15, pl. 5, figs. 1-2, 4-7.

Unio protractus subpictorum — Lindholm (1932)

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)

Unio pictorum var. okensis Zhadin, 1938

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

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

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

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 pictorum var. defectivus Zhadin, 1938

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

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

Unio limosus behningi Starobogatov & Pirogov, 1970

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

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

Unio pictorum tisianus Nesemann, 1993

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

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

Unio compressus Jeffr. 1862 of Authors

(homonym of Unio compressus J. de C. Sowerby, 1828)
Jeffr. 1862 of Authors.

Unio ventrosus Küster of Authors

Küster of Authors.

Unio levigatus Küster of Authors

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

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

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

Unio pictorum Pfeiffer, 1821

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

Unio limovianscae Lea, 1836

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

Unio rostrata Bouill., 1836

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

Unio pictorum — He & Zhuang (2013)

Unio pictorum Rossmässler, 1836

(reference to Mya pictorum Linnaeus, 1758)
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.

Unio pictorum Rossmässler, 1837

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

Unio tumidus var. rostratus — Germain (1931)

Mysca pictorum var. gotthardensis Schlüter, 1838

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

Unio pictorum — He & Zhuang (2013)

Mysca pictorum var. cuneata Schlüter, 1838

Schlüter, 1838. Kurzgef. Syst. Verz. Conch. Samml.: 33. [nomen nudum]

Unio platyrrhinchus Hanley, 1843

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

Unio deshaysii Brown, 1844

(error for Unio deshayesii Michaud, 1831)
Brown, 1844. Ill. Rec. Conch. Gr. Brit. & Ireland: 81, pl. 32, figs. 1-4.
Brown, 1845. Ill. Land & Fr. Water Conch. Gr. Brit. & Ireland: 108, pl. 20, 3-4.

Unio rostrata Gras, 1846

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

Unio platyrhyncus C.B. Adams, 1847

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

Unio requieni Gassies, 1849

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

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

Unio pictorum var. flavus Zelebor, 1851

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

Unio michaudii Zelebor, 1851

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

Unio curvirostris ‘Norm. in litt.’ Dupuy, 1852

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

Unio pictorum — He & Zhuang (2013)

Unio castaneus Lea, 1852

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

Unio pictorum Dupuy, 1852

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

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

Unio platyrinchus Bourguignat, 1853

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

Unio pallens Küster, 1854

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

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

Unio requienii Drouët, 1857

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

Unio pictorum — He & Zhuang (2013)

Unio pictorum de Joannis, 1859

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

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

Unio pictorum var. longirostris de Joannis, 1859

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

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

Unio pictorum var. milleti de Joannis, 1859

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

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

Unio platyrrhinchoideus Sowerby, 1868

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

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

Unio actaphilus Lea, 1870

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

Unio baudoni Kobelt, 1878

(reference to Unio baudoni Folin & Bérillon, 1874)
‘Drouet’ Kobelt, 1878. Icon. Land- und Süssw.-Moll. 6: 43, pl. 163, fig. 1646.
“HOLOTYPE” SMF 10733, France.

Unio pictorum — Nagel (2025)

Unio requienii Dupuy, 1878

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

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

Unio cumensis Kobelt, 1879

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

Unio mancus var. sabaudina Locard, 1882

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

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

Unio rynchetinus Letourneux, in litt. Servain, 1882

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

Unio tumidus — Germain (1931)

Unio tumeus Locard, 1882

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

Unio (Vincelotiana) tumens — Germain (1904)

Unio mineedwardsi Locard, 1889

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

Unio microdactylus Fagot in Locard, 1889

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

Unio macropsisthus Locard, 1889

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

Unio milnedwarsi Fagot, 1892

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

Unio limosus Kobelt, 1893

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

Unio (sec. Lymnium) platyrhynchus — Simpson (1900)
Unio (sec. Lymnium) (Group U. pictorum) platyrhynchus — Simpson (1914)

Unio pictorum var. C. parvula Kobelt & Haas, 1910

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

Unio pictorum moussonianus — Kobelt & Haas (1910)

Unio requieni var. rostrata Germain, 1931

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

Unio schrenckianus Haas, 1940

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

Unio platyodon Haas, 1940

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

Unio jousseaumi Haas, 1940

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

Unio caravellus Haas, 1940

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

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

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

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

Unio pictorum platyrhinchoideus Prié & Puillandre, 2014

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

Unio malzani Vinarski & Kantor, 2016

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