MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Fri 13 February 2026
Bivalvia | Unionida | Unionoidea | Unionidae | Parreysiinae | Lamellidentini | Trapezidens
species Trapezidens angustior (Hanley & Theobald, 1872): synonymy
2 specimens + 17 GenBank vouchers
Synonymy
Unio generosus var. angustior Hanley & Theobald, 1872
Hanley & Theobald, 1872. Conch. Indica (3): 22, pl. 46, fig. 7.
(intro'd as intra-sp. of Unio generosus Gould, 1847)
Type(s): HOLOTYPE BMNH_1968655, Pegu.
Lamellidens (s.s.) marginalis var. generosus — Preston (1912)
Lamellidens (s.s.) generosus — Simpson (1914)
Lamellidens generosus — Prashad (1922)
Trapezidens obesa angustior — Bolotov et al. (2017)
Trapezidens angustior — Konopleva et al. (2020), Bolotov et al. (2020), Graf & Cummings (2021), Bolotov et al. (2022), Bolotov et al. (2022), Bolotov et al. (2022), Bolotov et al. (2024)
Lamellidens marginalis var. sublamellatus Preston, 1912
‘Nevill, MS’ Preston, 1912. Rec. Ind. Mus. 7: 305.
Preston, 1915. Fauna Brit. India: 181, text fig. 19.
(intro'd as intra-sp. of Unio marginalis Lamarck, 1819)
Lamellidens (s.s.) marginalis var. sublamellatus — Preston (1912), Simpson (1914), Preston (1915)
Lamellidens scutum — Prashad (1922), Subba Rao (1989)
Lamellidens testudinarius — Haas (1969)
Trapezidens angustior — Konopleva et al. (2020)
Trapezidens obesa feae Kondakov, Konopleva et Vikhrev in Bolotov et al., 2017
Kondakov, Konopleva et Vikhrev in Bolotov et al., 2017. Sci. Repts. 7: 8, figs. 3d.
(intro'd as intra-sp. of Unio marginalis var. obesa Hanley & Theobald, 1872)
Trapezidens obesa feae — Bolotov et al. (2017)
Trapezidens obesa fea — Huang et al. (2019)
Trapezidens angustior — Konopleva et al. (2020)
Taxonomic History (since 1900)
Lamellidens (s.s.) marginalis var. generosus — Preston (1912)
Lamellidens (s.s.) marginalis var. sublamellatus — Preston (1912), Simpson (1914), Preston (1915)
Lamellidens (s.s.) generosus — Simpson (1914)
Lamellidens generosus — Prashad (1922)
Lamellidens scutum — Prashad (1922), Subba Rao (1989)
Lamellidens testudinarius — Haas (1969)
Trapezidens obesa angustior — Bolotov et al. (2017)
Trapezidens obesa feae — Bolotov et al. (2017)
Trapezidens obesa fea — Huang et al. (2019)
Trapezidens angustior — Konopleva et al. (2020), Bolotov et al. (2020), Graf & Cummings (2021), Bolotov et al. (2022), Bolotov et al. (2022), Bolotov et al. (2022), Bolotov et al. (2024)
