Annotated catalogue of the Ampulicidae, Crabronidae and Sphecidae (Hymenoptera) of the Malagasy subregion Author Madl, M. text Linzer biologische Beiträge 2014 2014-12-19 46 2 933 1039 journal article 10.5281/zenodo.5312608 0253-116X 5312608 Genus Rhopalum STEPHENS , 1829 Description: STEPHENS 1829: 366. Typus generis: Crabro rufiventris PANZER, 1799 (= Sphex clavipes LINNAEUS, 1758 ). Distribution: All zoogeographical regions. Valid species: 2.