BioStor
 | Zur Verbreitung der Bienengattung Andrena F. in Tunesien (Hymenoptera, Apidae) (1980) Mitteilungen Muenchener Entomologischen Gesellschaft 70: 65-87 |
 | 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 |