Perdita (Perdita) swenki Crawford, 1915

Counties:Anoka, Becker, Beltrami, Benton, Cass, Chippewa, Clay, Dakota, Douglas, Goodhue, Hennepin, Hubbard, Isanti, Kandiyohi, Marshall, Morrison, Otter Tail, Ramsey, Red Lake, Saint Louis, Scott, Sherburne, Stearns, Wadena, Washington, Yellow Medicine .

Genus Protandrena Cockerell

Taxonomy: Swenk & Cockerell (1907); Stevens (1950); Mitchell (1960); Timberlake (1964, 1967, 1975, 1976). We follow Bossert et al. (2022) in treating Pterosarus and Heterosarus as subgenera of Protandrena .