alba, Potamotrygon Castex [M. N.] 1963:55 [Anales del Museo Provincial de Ciencias Naturales "Florentino Ameghino," Sante Fe, Zoología v. 2 (no. 1); ref. 20925] Ascunción, Paraguay River, Paraguay. Syntypes: (3) whereabouts unknown. •Synonym of Potamotrygon motoro (Müller & Henle 1841) -- (Castex 1964:20 [ref. 20924], Carvalho et al. in Reis et al. 2003:25 [ref. 27061], López et al. 2003:6 [ref. 27366], Carvalho & Ragno 2011:135 [ref. 31309], Loboda & Carvalho 2013:713 [ref. 33024] as nomen dubium related to motoro, Litz & Koerber 2014:5 [ref. 33622], Mirande & Koerber 2015:8 [ref. 35117], Koerber et al. 2017:10 [ref. 35267]). Current status: Synonym of Potamotrygon motoro (Müller & Henle 1841). Potamotrygonidae: Potamotrygoninae. Habitat: freshwater.