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Published online by Cambridge University Press: 31 May 2012
The species here treated belong to genera previously “lumped” under Andrena.
Three submarginal cells.
♀ with joint 3 of the antennæ shorter than 4 and 5; ♂ with joint 3 shorter than 5, rarely as lon gas 4; sculpture in both sexes with few exceptions coarse, enclosure usually ridge, depressions fo abdominal segment usually sharply defined; ♀ with a simple tibial.
* It is believed that the types will eventually go to this institution.