A key to the genera of Eumeninae occurring in Oceania is presented. Hitherto there has been no published these genera, making routine identification difficult. New combinations are Pararrhynchium atrum emifasciatum (Giordani Soika), simillimum Parodynerus mariannensis (Bequaert and Yasumatsu), Phimenes solomonis malaitensis (van der Vecht).