BioStor
 | The type species of the genera and subgenera of bees Grace A Sandhouse (1943) Proceedings of the United States National Museum 92(3156): 519-619 |
 | Primary insect types in the Illinois Natural History Survey collection, exclusive of the Collembola and Thysanoptera Donald W Webb (1980) Bulletin Illinois Natural History Survey 32(2): 55-189 |
 | Genus-group names of bees and supplemental family-group names Charles D Michener (1997) Scientific Papers Natural History Museum University of Kansas 1: 1-81 |