After Parker, 1982, “The Tree of Life”, Zhang, Rasnitsyn & Zhang, 2002, and Grimaldi & Engel, 2005

<==o Vespoidea [incl. Pompiloidea, Scolioidea & Formicioidea] (ampiaismaiset pistiäiset; wasp-like)
   |--o Sierolomorphidae
   |  `-- Sierolomorpha
   `--+--+--o Tiphiidae
      |  |  |-- †Architiphia rasnitsyni L.Cret. ESA.
      |  |  |-- Anthoboscinae
      |  |  |-- Brachycistidinae
      |  |  |-- Diamminae
      |  |  `== four other subfamilies
      |  `--+-- Pompilidae (spider wasps, hawk wasps; tiepistiäiset)
      |     `--+-- Mutillidae (velvet “ants”; mutipistiäiset)
      |        `--o Sapygidae
      |           |-- Fedtschenkiinae
      |           `--o Sapyginae
      |              `-- Sapyga
      `--+--o Rhopalosomatidae
         |  |-- †Mesorhopalosoma L.Cret. ESA.
         |  |-- †Propalosoma Eoc. WNA.
         |  `== Recent Rhopalosomatids
         `--+-- Bradynobaenidae
            `--+-- †Falciformicidae
               `--+--+-- †Armaniidae
                  |  `-- Formicidae Latreille, 1809 [Formicioidea] (muurahaiset; ants)
                  `--+-- Scoliidae Latreille, 1802 [Scolioidea Rasnitsyn, 1988] (puukkopistiäiset)
                     `--o Vespidae [incl. Eumenidae, Masaridae] (aitoampiaiset; vespid wasps)
                        |-- Euparagiinae
                        |-- Masarinae
                        |-- Eumeninae
                        `--+-- Stenogastrinae (hover wasps)
                           `--+-- Polistinae (paper wasps; paperiampiaiset)
                              `-- Vespinae (hornets, yellow jackets; ampiaiset, herhiläiset)

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