Apidae Leach, 1815
Ptilothrix albidohirta Brèthes, 1910
Ptilothrix bombiformis (Cresson, 1878)
Ptilothrix chacoensis Brèthes, 1910
Ptilothrix concolor Roig-Alsina, 2007
Ptilothrix corrientium Strand, 1910
Ptilothrix fructifera (Holmberg, 1903)
Ptilothrix fuliginosa (Friese, 1910)
Ptilothrix heterochroa Cockerell, 1919
Ptilothrix lynchii Brèthes, 1910
Ptilothrix nemoralis Roig-Alsina, 2007
Ptilothrix nigerrima (Friese, 1906)
Ptilothrix plumata Smith, 1853
Ptilothrix relata (Holmberg, 1903)
Ptilothrix scalaris (Holmberg, 1903)
Ptilothrix sumichrasti (Cresson, 1878)
Ptilothrix tricolor (Friese, 1906)
Ptilothrix vulpihirta (Cockerell, 1912)
