BioStor
 | Plates R C L Perkins (1919) Transactions of The Royal Entomological Society of London 67: 218-319 |
 | 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 |
 | Beitrag zur Kenntnis der Bienengattung Andrena F. in der Tiirkei (Hymenoptera, Apoidea) (1965) Mitteilungen Der Muenchener Entomologischen Gesellschaft 55: 244-273 |
 | Community structure of flower-visiting insects in different grassland types in Southwestern Germany (Hymenoptera, Apoidea, Lepidoptera, Diptera) A Kratochwil (1989) Spixiana 12: 289-302 |
 | 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 |