Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Lampsilini | Pachynaias spheniopsis

nominal species Unio spheniopsis Morelet, 1849

Unio spheniopsis Morelet, 1849 = Pachynaias spheniopsis

Morelet, 1849. Test. Nov. 1: 29.
Type(s): LECTOTYPE [AS HOLOTYPE] BMNH_93-2-4-2028 (by R.I. Johnson, 1971: 94), flumen Usumacinta, Guatemala.

Taxonomic Opinions

= Pachynaias spheniopsis (Morelet, 1849) — Campbell & Lydeard, 2026: 288.

= Pachynaias spheniopsis (Morelet, 1849) — Freeman et al., 2025: 246, Table 1.

= Pachynaias spheniopsis (Morelet, 1849) — Cummings et al., 2025: 210, pl. 38, Table 3, 10.

= Pachynaias spheniopsis (Morelet, 1849) — Czaja et al., 2023: 87.

= Pachynaias spheniopsis (Morelet, 1849) — Graf & Cummings, 2021: 18.

= Pachynaias spheniopsis — Inoue et al., 2020: 460.

= Pachynaias spheniopsis — Smith et al., 2020: 507.

= Pachynaias spheniopsis (Morelet, 1849) — Pfeiffer et al., 2019: 108.

= Pachynaias spheniopsis (Morelet, 1849) — Pfeiffer et al., 2019: 116.

= Pachynaias spheniopsis Morelet, 1849 — Bogan, 2010: [24].

= Pachynaias spheniopsis (Morelet, 1849) — Graf & Cummings, 2007: 309.

= Pavhynaias [sic] spheniopsis — Contreras-Arquieta, 2000: 44.

= Pachynaias spheniopsis (Morelet, 1849) — Haas, 1969: 476.

= Pachynaias spheniopsis (Morelet, 1849) — Haas, 1969: N455, fig. D48:6.

= Pachynaias spheniopsis (Morelet) — Thiele, 1934: 837, [1274].

= Pachynaias spheniopsis (Morelet) — Haas, 1929: 318.

= Elliptio (Pachynaias) spheniopsis (Crosse & Fischer, 1893) [sic] — Frierson, 1927: 38, sp. 153.

= Quadrula (sec. Pachynaias) spheniopsis (Morelet, 1849) — Simpson, 1914: 901.

= Nephronaias spheniopsis (Morelet, 1849) — Ihering, 1901: 50.

= Quadrula (sec. Pachynaias) spheniopsis (Morelet, 1849) — Simpson, 1900: 794.

= Unio (Pleurobema) spheniopsis Morelet, 1849 — Martens, 1900: 500.

= Unio (Pachynaias) spheniopsis Morelet, 1849 — Fischer & Crosse, 1894: 583, pl. 61, figs. 2-2b.

+ — Lea, 1870: 64.

+ — Lea, 1852: 40.

= Unio spheniopsis — Morelet, 1849: 29.