BioStor
 | Descriptions of New Species of Hymenoptera Taken by Mr. Edward Whymper on the "Higher Andes of the Equator" P Cameron (1903) Transactions of The American Entomological Society 29: 225-238 |
 | 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 |