Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Truncilla

species Truncilla cognata (Lea, 1860): synonymy

11 specimens + 23 GenBank vouchers

Synonymy

image of type lot

Unio cognatus Lea, 1860

Lea, 1860. Proc. Acad. Nat. Sci. 12: 306.
Lea, 1860. Jour. Acad. Nat. Sci. 4 [O. 8]: 368 [50], pl. 65, fig. 193.
Type(s): HOLOTYPE (MONOTYPY) USNM_85004, Rio Salado, N. Leon, Mexico.

Plagiola (Amygdalonaias) cognata — Simpson (1900)
Unio (Lampsilis) cognatus — Martens (1900)
Plagiola (Amygdalonaias) (Group of P. donaciformis) cognata — Simpson (1914)
Truncilla cognata — Frierson (1927), Haas (1969), Turgeon et al. (1988), Williams et al. (1993), Howells et al. (1996), ... Hopper et al. (2023), Saxon et al. (2023), FMCS (2025), Cummings et al. (2025), Campbell & Lydeard (2026)
Truncilla donaciformis — R.I. Johnson (1999)
Truncilla cognatus — Haag (2012)

Unio donaciformis Sowerby, 1866

(misidentified reference to Unio donaciformis Lea, 1828)
specimen image from publication‘Lea’ Sowerby, 1866. Conch. Icon. 16: pl. 39, sp. 214.

Plagiola (Amygdalonaias) cognata — Simpson (1900)

Taxonomic History (since 1900)

Plagiola (Amygdalonaias) cognata — Simpson (1900)
Unio (Lampsilis) cognatus — Martens (1900)
Plagiola (Amygdalonaias) (Group of P. donaciformis) cognata — Simpson (1914)
Truncilla cognata — Frierson (1927), Haas (1969), Turgeon et al. (1988), Williams et al. (1993), Howells et al. (1996), ... Hopper et al. (2023), Saxon et al. (2023), FMCS (2025), Cummings et al. (2025), Campbell & Lydeard (2026)
Truncilla donaciformis — R.I. Johnson (1999)
Truncilla cognatus — Haag (2012)