Andrena (Geissandrena) LaBerge & Ribble 1972

LaBerge & Ribble 1972. A revision of the bees of the genus Andrena of the western hemisphere. Part 5. Gonandrena, Geissandrena, Parandrena, Pelicandrena. Transactions Am. ent. Yearbook American Philosophical Society, 98(3) 1972: 271-358