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 |
 | Classification of the Apidae (Hymenoptera) Charles D Michener (1990) University of Kansas Science Bulletin 54(4): 75-164 |
 | 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 |
 | Relative Abundance, Diversity And Bees Phenology (Hymenoptera, Apoidea) At Caatinga (Sao Joao Do Cariri, Paraiba, Brazil) Candida Maria Lima Aguiar and Celso Feitosa Martins (1997) Iheringia Serie Zoologia 83: 151-163 |