species Monocondylaea guarayana (d’Orbigny, 1835): synonymy

Unio (Monocondylaea) guarayana d’Orbigny, 1835

d’Orbigny, 1835. Mag. Zool. 5(61-62): 38.
d’Orbigny, 1846. Voyage dans l’Amérique Méridionale 5(3): 614, pl. 68, figs. 4-7 [as ‘Monocondylaea guarayana’].
LECTOTYPE [AS HOLOTYPE] BMNH_54-9-4-17 (by R.I. Johnson, 1971: 85), Rio San Miguel, Guarayos, Bolivia.

Monocondylæa guarayana — Simpson (1900)
Monocondylæa (Group of M. guarayana) guarayana — Simpson (1914)
Monocondylaea guarayana — Haas (1931), Haas (1969), Quintana (1982), Pereira et al. (2014), Mansur et al. (2020), Graf & Cummings (2021)
Monocondylaea paraguayana — Simone (2006)