- Protandrena albertensis, Panurginus piercei albertensis Cockerell, 1937;Heterosarus (Pterosarus) piercei albertensis (Cockerell, 1937);Pterosarus piercei albertensis (Cockerell, 1937);Pseudopanurgus piercei albertensis (Cockerell, 1937)
- Protandrena piercei, Panurginus piercei Crawford, 1903;Pseudopanurgus (Pterosarus) piercei (Crawford, 1903);Heterosarus (Pterosarus) piercei (Crawford, 1903);Pterosarus piercei (Crawford, 1903)
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