Subgenus Ptilandrena Robertson

Taxonomy: LaBerge & Ribble (1975) [as Euandrena]; LaBerge (1977) [as Euandrena]; LaBerge (1986). Recently, Pisanty et al. (2022) moved all Nearctic taxa previously in Euandrena to Ptilandrena . Four species ( A. algida, A. geranii, A. nigrihirta, and A. polemonii) were formerly included in Euandrena .