Family Rhopalosomatidae (wasp)
Parent taxon: Vespoidea according to M. J. Sharkey 2007
Sister taxa: Bradynobaenidae, Formicidae, Mutillidae, Pompilidae, Sapygidae, Scoliidae, Sierolomorphidae, Tiphiidae, Vespidae, Oryctopterus, Falsiformicidae
Subtaxa: Eorhopalosoma, Mesorhopalosoma, Paleorhopalosoma, Propalosoma
Ecology: