BioStor
 | Classification of the bees, or the superfamily Apoidea (1899) Transactions of The American Entomological Society 26: 49-100 |
 | Notes on Osmiinæ with Descriptions of New Genera and Species E S G Titus (1904) Journal of The New York Entomological Society 12: 22-27 |
 | A much described Ichneumonid and its systematic position R A Cushman (1917) Proceedings of the Entomological Society of Washington 19: 162-165 |
 | New Hymenoptera (1918) Proceedings of The Entomological Society of Washington 19: 165-172 |
 | 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 |