Bivalvia | Unionida | Unionoidea | Unionidae | Gonideinae | Rectidentini | Contradentina

genus Lens Simpson, 1900: synonymy

13 Recent freshwater species (13 total species)

Synonymy

Sprichia Vokes, 1980

‘Modell’ of Authors.
Vokes, 1980. Genera of the Bivalvia: 78.
Vaught, 1989. Class. Livinh Moll.: 122.
Millard, 2001. Class. Moll. (3): 1064.
(error for Sprickia Modell, 1942)
Type species: Unio verbecki Martens, 1897 = Lens contradens

Lens Simpson, 1900

Simpson, 1900. Proc. U.S. Nat. Mus. 22: 831.
Simpson, 1914. Descr. Cat. Naiades: 1067.
(intro'd as sub-gen. of Physunio Simpson, 1900)
Type species: Unio eximius Lea, 1856 (orig. desig.) = Lens eximius

Contradens Haas, 1911

Haas, 1911. Conch. Cab. 9 (pt. 2, h. 44): pl. 18-22.
Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 35.
Haas, 1913. Conch. Cab. 9 (pt. 2, h. 48): 173.
Type species: Unio contradens Lea, 1838 (orig. desig.) = Lens contradens

Schizocleithrum Haas, 1913

Haas, 1911. Conch. Cab. 9 (pt. 2, h. 44): pl. 22.
Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 36.
Haas, 1914. Conch. Cab. 9 (pt. 2, h. 49): 202.
Type species: Unio pajakomboensis Bullen, 1906 (orig. desig.) = Lens contradens

Uniandra Haas, 1913

Haas, 1913. Conch. Cab. 9 (pt. 2, h. 47): 140.
(intro'd as sub-gen. of Ensidens Frierson, 1911)
Type species: Unio inaequalis Rochebrune, 1882 (orig. desig.) = Lens micropterus

Sprickia Modell, 1942

Modell, 1942. Arch. Moll. 74(5/6): 189.
Modell, 1964. Arch. Moll. 93: 114.
(intro'd as sub-gen. of Contradens Haas, 1911)
Type species: Unio verbecki Martens, 1897 (orig. desig.) = Lens contradens

Contortus Araujo et al., 2017

Araujo et al., 2017. Zool. J. Linn. Soc. 179(2): 280.
(error for Contradens Haas, 1911)
Type species: Unio contradens Lea, 1838 = Lens contradens

Taxonomic History (since 1900)

The Taxonomic History lists the ways authors have classified the species currently assigned to Lens, since 1900.

Nodularia (s.s.) — Simpson (1900), Simpson (1914)
Physunio (s.s.) — Simpson (1900), Preston (1912), Simpson (1914), Haas (1919), Haas (1924), Haas (1952), Haas (1969)
Physunio (sec. Lens) — Simpson (1900)
Trapezoideus — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915), Haas (1919), ... IUCN (2012), He & Zhuang (2013), Do et al. (2018), Pfeiffer et al. (2018), Zieritz et al. (2018)
Dalliella — Simpson (1900)
Unio — Martens (1900), Bullen (1906), Preston (1912), Simpson (1914)
Unio (Nodularia) — Dautzenberg & Fischer (1905)
Contradens — Haas (1913), Haas (1914), Ortmann (1917), Haas (1924), Thiele (1934), ... Ng et al. (2020), Graf & Cummings (2021), Bieler (2021), Smith (2021), Sahidin et al. (2021)
Ensidens (s.s.) — Haas (1913), Haas (1969)
Ensidens (sec. Uniandra) — Haas (1913), Thiele (1934)
Physunio (Lens) — Simpson (1914), Haas (1969)
Hyriopsis (s.s.) — Simpson (1914)
Pseudodon (sec. Bineurus) — Simpson (1914)
Schizocleithrum — Haas (1914)
Pseudodon (Bineurus) — Haas (1920), Haas (1969)
Ensidens (Uniandra) — Prashad (1932), Haas (1952), Haas (1969), Haas (1969)
Contradens (s.s.) — Modell (1942), Haas (1969)
Contradens (Sprickia) — Modell (1942), Haas (1969)
Physunio — van Benthem Jutting (1953), Brandt (1974), Graf & Cummings (2007), Sri-aroon et al. (2007), Bogan (2010), ... Konopleva et al. (2019), Ng et al. (2020), Graf & Cummings (2021), Wu et al. (2021), Sahidin et al. (2021)
Ensidens — F.R. Woodward (1969)
Uniandra — Brandt (1974), Graf (2002), Sri-aroon et al. (2007), Hoeh et al. (2009), Bogan (2010), IUCN (2012), Bogan & Do (2014), Zieritz et al. (2015), Sahidin et al. (2021)
Harmandia — Brandt (1974), Graf & Cummings (2007), Bogan (2010), IUCN (2012), Zieritz et al. (2018)
Contortus [sic] — Araujo et al. (2017)
Lens — Pfeiffer et al. (2021), Jeratthitikul et al. (2021), Zieritz et al. (2021), Jeratthitikul et al. (2021), Zieritz et al. (2021), ... Chen et al. (2025), Chen et al. (2025), Campbell & Lydeard (2026), Wu et al. (2026), Zieritz et al. (2026)