species Nephronaias ravistella (Morelet, 1849): synonymy

Unio ravistellus Morelet, 1849

Morelet, 1849. Test. Nov. 1: 29.
Type(s): LECTOTYPE [AS HOLOTYPE] BMNH_93-2-4-2021 (by R.I. Johnson, 1971: 92), Lake d’Yzabal, Guatemala.

Nephronaias ravistellus — Simpson (1900)
Unio (Elliptio) ravistellus — Martens (1900)
Nephronaias ravistella — Simpson (1914), Graf & Cummings (2007), Bogan (2010), Inoue et al. (2020), Graf & Cummings (2021), Czaja et al. (2023), Cummings et al. (2025)
Elliptio ravistellus — Ortmann (1921)
Elliptio (Nephronaias) ravistellus — Frierson (1927), Haas (1929)
Nephronaias (s.s.) ravistella — Haas (1969)

Unio veraepacis Tristram, 1863

Tristram, 1863. Proc. Zool. Soc. London 1863: 414 [as ‘veræ pacis’].
Type(s): HOLOTYPE (MONOTYPY) BMNH_1901-6-22-1537, Guatemala.

Unio (sec. Elliptio) verae-pacis — Simpson (1900)
Unio (Elliptio) ravistellus var. veraepacis — Martens (1900)
Unio (sec. Elliptio) popeii — Simpson (1914)
Elliptio (Popenaias) popei — Frierson (1927)
Elliptio (Nephronaias) verae-pacis — Haas (1929)
Nephronaias (Popenaias) popeii — Haas (1969)
Popenaias popei — Howells et al. (1996)
Nephronaias ravistella — Inoue et al. (2020), Cummings et al. (2025)

Unio vellicatus Reeve, 1865

Reeve, 1865. Conch. Icon. 16: pl. 22, sp. 103.
Type(s): TYPE LOST XXX_UNKNOWN, Guatemala.

Nephronaias vellicatus — Simpson (1900)
Unio (Elliptio) ravistellus var. veraepacis — Martens (1900)
Nephronaias vellicata — Simpson (1914)
Elliptio (Nephronaias) ravistellus-vellicatus — Frierson (1927)
Elliptio (Nephronaias) verae-pacis — Haas (1929)
Nephronaias ravistella — Cummings et al. (2025)

Unio (Elliptio) ravistellus var. majusculus Martens, 1900

Martens, 1900. Biol. Centr.-Amer., Moll.: 516.
(intro'd as intra-sp. of Unio ravistellus Morelet, 1849)
Type(s): LECTOTYPE ZMB_38701 (by Cummings et al., 2025: 277), See Yzabal, Guatemala.

Unio (Elliptio) ravistellus var. majusculus — Martens (1900)
Nephronaias ravistella var. majuscula — Simpson (1914)
Nephronaias ravistella — Cummings et al. (2025)

Unio raristillus Lea, 1852

‘Morelet’ Lea, 1852. Synopsis Fam. Naiades: 40.
(error for Unio ravistellus Morelet, 1849)