Rhopalolemma rotundiceps Roig-Alsina 1997

Roig-Alsina 1997. The cleptoparasitic bee genus Rhopalolemma, with reference to other Nomadinae (Apidae), and biology of its host Protodufourea (Halictidae: Rophitinae). American Museum Novitates, 3194, March 3 1997: 1-28