A review of the genus Timberlakena Pate (1939), in which the subgenera Mohavena Pate (1939) and Riparena Pate (1939) are reestablished and raised to generic level, with descriptions of new species (Hymenoptera: Crabronidae). Pan-Pacific Entomologist, 87(4), Oct 2011: 227-275. 236 [Zoological Record Volume 148]