Subgeneric Positions and Redescriptions of Cockerell’s Siberian Andrena Preserved in the British Museum (Natural History) (Hymenoptera, Andrenidae)

Ten species of the genus Andrena described by Cockerell from Siberia are examined. Seven species/subspecies are redescribed and given their subgeneric positions for the first time. One new synonymy and 2 new status are recognized as follows: Andrena epimelaena Cockerell = A. denticulata (Kirby); A. brassicae Hirashima = A. semirugosa brassicae; A. baicalensis Cockerell = A. tarsata baicalensis