nominal species Unio propecaelatus Parmalee & Bogan, 1998
Unio propecaelatus Parmalee & Bogan, 1998 = Pegias fabula
‘de Gregorio’ Parmalee & Bogan, 1998. The Freshwater Mussels of Tennessee: 169. ‘de Gregorio’ Williams et al., 2008. Freshw. Mussels AL and Mobile Basin: 483. (error for Unio propecoelatus de Gregorio, 1914)