species Lens misellus (Morelet, 1865): synonymy

Unio misellus Morelet, 1865

Morelet, 1865. J. de Conch. 13: 21.
Morelet, 1875. Séries Conch. 4: 341, pl. 14, fig. 2.
Type(s): HOLOTYPE BMNH_93-2-4-1593, Siam.

Trapezoideus misellus — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915), Haas (1919), Annandale & Prashad (1921), Prashad (1922), Haas (1969), Dang et al. (1980), Bogan (2010), IUCN (2012), Do et al. (2018)
Trapezoideus exolescens exolescens — Brandt (1974), Subba Rao (1989), Ramakrishna & Dey (2007)
Trapezoideus exolescens — He & Zhuang (2013)
Contradens misellus — Konopleva et al. (2019), Konopleva et al. (2019), Bolotov et al. (2020), Zieritz et al. (2020), Graf & Cummings (2021)
Lens misellus — Pfeiffer et al. (2021), Bolotov et al. (2022), Konopleva et al. (2023), Zieritz et al. (2024), Campbell & Lydeard (2026), Zieritz et al. (2026)

Unio siamensis Lea, 1866

Lea, 1866. Proc. Acad. Nat. Sci. 18: 133.
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 279 [39], pl. 38, fig. 93.
Type(s): HOLOTYPE USNM_85893, Siam.

Trapezoideus misellus — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915), Haas (1919), Haas (1969), IUCN (2012)
Trapezoideus exolescens exolescens — Brandt (1974), Subba Rao (1989), Ramakrishna & Dey (2007)
Trapezoideus exolescens — He & Zhuang (2013)
Lens misellus — Pfeiffer et al. (2021)

Unio micellus Lea, 1870

‘Morelet Lea, 1870. Synopsis Fam. Naiades: 63.
(error for Unio misellus Morelet, 1865)