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 |
 | The generic names of the beetle family Staphylinidae, with an essay on genotypy Richard E Blackwelder (1952) United States National Museum Bulletin 200: 1-483 |
 | Classification of American Colletinae (Hymenoptera, Apoidea) Charles D Michener (1989) University of Kansas Science Bulletin 53(11): 623-703 |
 | 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 |