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
Mon 13 July 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
(intro'd as intra-sp. of Unio generosus Gould, 1847)
Hanley & Theobald, 1872. Conch. Indica (3): 22, pl. 46, fig. 7.
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), Campbell & Lydeard (2026), Konopleva et al. (2026)
Lamellidens marginalis var. sublamellatus Preston, 1912
(intro'd as intra-sp. of Unio marginalis Lamarck, 1819)
‘Nevill, MS’ Preston, 1912. Rec. Ind. Mus. 7: 305.
Preston, 1915. Fauna Brit. India: 181, text fig. 19.
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 & Vikhrev in Bolotov et al., 2017
(intro'd as intra-sp. of Unio marginalis var. obesa Hanley & Theobald, 1872)
Kondakov, Konopleva & Vikhrev in Bolotov et al., 2017. Sci. Repts. 7: 8, figs. 3d.
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), Campbell & Lydeard (2026), Konopleva et al. (2026)
