BioStor
 | Names applied to the eucerine bees of North America T D A Cockerell (1912) Proceedings of The United States National Museum 43: 261-273 |
 | Notes on the structure of Bees (1924) Proceedings of The Entomological Society of Washington 26: 77-85 |
 | 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 |
 | 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 |