MolluscaBase taxon details
Trapezoideus C. T. Simpson, 1900
747105 (urn:lsid:marinespecies.org:taxname:747105)
accepted
Genus
Unio foliaceus A. Gould, 1843 accepted as Trapezoideus foliaceus (A. Gould, 1843) (type by original designation)
- Species Trapezoideus aktobiensis Martinson & Tolstikova, 1969 †
- Species Trapezoideus foliaceus (A. Gould, 1843)
- Species Trapezoideus kasachstanicus Martinson & Tolstikova, 1969 †
- Species Trapezoideus lenya Bolotov et al., 2020
- Species Trapezoideus mitanensis Bolotov, Konopleva, Than Win, Kondakov & Vikhrev, 2022
- Species Trapezoideus subviridis J. M. Pfeiffer, D. L. Graf, K. S. Cummings & L. M. Page, 2021
- Species Trapezoideus thachiadensis Konopleva, Lheknim, Sriwoon, Kondakov, Vikhrev & Bolotov, 2022
- Species Trapezoideus zoebeleini Modell, 1969 †
- Species Trapezoideus comptus (Deshayes, 1876) accepted as Contradens comptus (Deshayes, 1876) accepted as Lens comptus (Deshayes, 1876) (unaccepted > superseded combination)
- Species Trapezoideus dallianus (Frierson, 1913) accepted as Yaukthwa dalliana (Frierson, 1913) (unaccepted > superseded combination)
- Species Trapezoideus dhanushori Annandale & Prashad, 1921 accepted as Indonaia corbis (Hanley, 1856) (unaccepted > junior subjective synonym)
- Species Trapezoideus exolescens (A. Gould, 1843) accepted as Trapezidens exolescens (A. Gould, 1843) (unaccepted > superseded combination)
- Species Trapezoideus misellus (Morelet, 1865) accepted as Contradens misellus (Morelet, 1865) accepted as Lens misellus (Morelet, 1865) (unaccepted > superseded combination)
- Species Trapezoideus nesemanni Konopleva, Vikhrev & Bolotov, 2017 accepted as Yaukthwa nesemanni (Konopleva, Vikhrev & Bolotov, 2017) (basionym)
- Species Trapezoideus pallegoixi (G. B. Sowerby II, 1867) accepted as Lens pallegoixi (G. B. Sowerby II, 1867) (unaccepted combination)
- Species Trapezoideus panhai Konopleva, Bolotov & Kondakov, 2017 accepted as Yaukthwa panhai (Konopleva, Bolotov & Kondakov, 2017) (basionym)
- Species Trapezoideus peguensis (J. G. Anthony, 1865) accepted as Yaukthwa peguensis (J. G. Anthony, 1865) (unaccepted > superseded combination)
- Species Trapezoideus peninsularis C. T. Simpson, 1900 accepted as Lens contradens (I. Lea, 1838) (junior synonym)
- Species Trapezoideus prashadi F. Haas, 1922 accepted as Arcidopsis footei (Theobald, 1876)
- Species Trapezoideus subclathratus (E. von Martens, 1899) accepted as Indonaia subclathrata (E. von Martens, 1899) (unaccepted > superseded combination)
- Species Trapezoideus zayleymanensis Preston, 1912 accepted as Yaukthwa zayleymanensis (Preston, 1912) (unaccepted > superseded combination)
masculine
Simpson, C. T. (1900). Synopsis of the naiades, or pearly fresh-water mussels. <em>Proceedings of the United States National Museum.</em> 22(1205): 501-1044, plate 18., available online at http://biodiversitylibrary.org/page/32021246
page(s): 858 [details]
page(s): 858 [details]
Type locality contained in Thailand
type locality contained in Thailand [details]
Distribution Southern Myanmar (Lenya and Dawei basins) and southwestern Thailand (Mae Klong Basin)
Distribution Southern Myanmar (Lenya and Dawei basins) and southwestern Thailand (Mae Klong Basin) [details]
MolluscaBase eds. (2025). MolluscaBase. Trapezoideus C. T. Simpson, 1900. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=747105 on 2025-04-30
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original description
Simpson, C. T. (1900). Synopsis of the naiades, or pearly fresh-water mussels. <em>Proceedings of the United States National Museum.</em> 22(1205): 501-1044, plate 18., available online at http://biodiversitylibrary.org/page/32021246
page(s): 858 [details]
taxonomy source Konopleva, E. S.; Pfeiffer, J. M.; Vikhrev, I. V.; Kondakov, A. V.; Gofarov, M. Y.; Aksenova, O. V.; Lunn, Z.; Chan, N.; Bolotov, I. N. (2019). A new genus and two new species of freshwater mussels (Unionidae) from western Indochina. <em>Scientific Reports.</em> 9(1)., available online at https://doi.org/10.1038/s41598-019-39365-1 [details] Available for editors
[request]
taxonomy source Pfeiffer, J. M.; Graf, D. L.; Cummings, K. S.; Page, L. M. (2021). Taxonomic revision of a radiation of South-east Asian freshwater mussels (Unionidae : Gonideinae : Contradentini+Rectidentini). <em>Invertebrate Systematics.</em> 35(4): 394-470., available online at https://doi.org/10.1071/is20044 [details]
page(s): 858 [details]
taxonomy source Konopleva, E. S.; Pfeiffer, J. M.; Vikhrev, I. V.; Kondakov, A. V.; Gofarov, M. Y.; Aksenova, O. V.; Lunn, Z.; Chan, N.; Bolotov, I. N. (2019). A new genus and two new species of freshwater mussels (Unionidae) from western Indochina. <em>Scientific Reports.</em> 9(1)., available online at https://doi.org/10.1038/s41598-019-39365-1 [details] Available for editors
[request]taxonomy source Pfeiffer, J. M.; Graf, D. L.; Cummings, K. S.; Page, L. M. (2021). Taxonomic revision of a radiation of South-east Asian freshwater mussels (Unionidae : Gonideinae : Contradentini+Rectidentini). <em>Invertebrate Systematics.</em> 35(4): 394-470., available online at https://doi.org/10.1071/is20044 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Distribution Southern Myanmar (Lenya and Dawei basins) and southwestern Thailand (Mae Klong Basin) [details]
