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Data last updated
Thu 18 Dec 2025

Bivalvia | Unionoida | Unionoidea | Unionidae | Parreysiinae | Lamellidentini | Trapezidens

species Trapezidens exolescens (Gould, 1843): synonymy

16 specimens + 7 Genbank vouchers

Synonymy

image of type lot

Unio exolescens Gould, 1843

Gould, 1843. Proc. Boston Soc. Nat. Hist. 1: 141.
Type(s): LECTOTYPE USNM_85473 (by R.I. Johnson, 1964: 73), Tavoy, Burmah.

Trapezoideus exolescensSimpson (1900), Preston (1912), Simpson (1914), Preston (1915), Haas (1919), ... Pfeiffer & Graf (2015), Kongim et al. (2015), Lopes-Lima et al. (2017), Zieritz et al. (2018), Do et al. (2018)
Trapezoideus misellusHaas (1969)
Trapezoideus exolescens exolescensBrandt (1974), Subba Rao (1989), Deein et al. (2004), Ramakrishna & Dey (2007)
Lamellidens exolescensBolotov et al. (2017), Konopleva et al. (2017)
Trapezidens exolescensBolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019), Jeratthitikul et al. (2019), Konopleva et al. (2020), ... Bolotov et al. (2022), Konopleva et al. (2023), Bolotov et al. (2024), Dai et al. (2024), Dai et al. (2024)

Unio fragilis Nevill, 1877

Nevill, 1877. J. Asiat. Soc. Bengal 46: 39.
(homonym of Unio (Leptodea) fragilis Rafinesque, 1820)

Trapezoideus foliaceus var. comptusSimpson (1900), Simpson (1914), Preston (1915)
Trapezoideus misellusHaas (1919), Haas (1969)
Trapezoideus exolescensPrashad (1922), He & Zhuang (2013)
Trapezoideus exolescens pallegoixiBrandt (1974)

Unio exolescens Hanley & Theobald, 1874

specimen image from publication‘Gould’ Hanley & Theobald, 1874. Conch. Indica (6): 43, pl. 107, fig. 5.
(reference to Unio exolescens Gould, 1843)

Trapezoideus exolescensSimpson (1900), Preston (1915)
Trapezoideus misellusHaas (1919)

Unio exolesceus Ramakrishna & Dey, 2007

‘Gould’ Ramakrishna & Dey, 2007. Handb. Indian Freshw. Moll.: 328.
(error for Unio exolescens Gould, 1843)

Taxonomic History (since 1900)

Trapezoideus exolescensSimpson (1900), Preston (1912), Simpson (1914), Preston (1915), Haas (1919), ... Pfeiffer & Graf (2015), Kongim et al. (2015), Lopes-Lima et al. (2017), Zieritz et al. (2018), Do et al. (2018)
Trapezoideus foliaceus var. comptusSimpson (1900), Simpson (1914), Preston (1915)
Trapezoideus misellusHaas (1919), Haas (1969)
Trapezoideus exolescens exolescensBrandt (1974), Subba Rao (1989), Deein et al. (2004), Ramakrishna & Dey (2007)
Trapezoideus exolescens pallegoixiBrandt (1974)
Lamellidens exolescensBolotov et al. (2017), Konopleva et al. (2017)
Trapezidens exolescensBolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019), Jeratthitikul et al. (2019), Konopleva et al. (2020), ... Bolotov et al. (2022), Konopleva et al. (2023), Bolotov et al. (2024), Dai et al. (2024), Dai et al. (2024)

 
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