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

<==o Apocrita Gerstäcker, 1867
   |-- †Karatavitidae [paraphyletic Ephialtitoidea Handlirsch, 1906 sensu Rasnitsyn, 1980]
   `--+-- †Ephialtitidae Handlirsch, 1906 [paraphyletic Ephialtitoidea Handlirsch, 1906 sensu Rasnitsyn, 1980]
      |--o Stephanoidea
      |  `--o Stephanidae
      |     |--o Schlettereriinae
      |     |  `-- †Archaeostephanus corae
      |     `-- Stephaninae
      `--+--+--o Trigonaloidea
         |  |  `-- Trigonalyidae
         |  `--o Megalyroidea
         |     |-- †Maimetsha
         |     `--o Megalyridae
         |        `--o Megalyra
         |           `-- M. troglodytes
         |--+-- †Kuafuidae
         |  `--  Evanioidea Latreille, 1802 (ensign wasps and relatives)
         |--+-- Aculeata (myrkkypistiäiset)
         |  `--o Ichneumonoidea (loispistiäiset)
         |     |?-o †Praeichneumonidae
         |     |  `-- †Praeichneumon
         |     |?- Tanychora
         |     |-- Ichneumonidae (varsinaiset loispistiäiset)
         |     |?- Apozygidae
         |     `--+-- †Eoichneumonidae
         |        `-- Braconidae (vainopistiäiset
         `--o Proctotrupomorpha
            |--o “Proctotrupoidea” Latreille, 1802
            |  |-- Roproniidae
            |  |-- Maamingidae
            |  |-- Monomachidae
            |  |-- Peradeniidae
            |  |-- Proctorenyxidae
            |  |--+-- Austroniidae
            |  |  `-- Monomachidae
            |  |-- Heloridae
            |  `--+-- Vanhorniidae
            |     |-- Pelecinidae Haliday, 1840 [incl. Pelecinopteridae Brue, 1933]
            |     `-- Proctotraupidae (keripistiäiset)
            |--+--o Diapriidae
            |  |  |-- Ambositrinae
            |  |  |-- Belytinae
            |  |  |-- Ismarinae
            |  |  `--+?- Peckidium enigmaticum
            |  |     `-- Diapriinae
            |  `--+-- †Archaeocynipidae
            |     `-- Cynipoidea Latreille, 1802 (gall wasps and relatives; äkämäpistiämäismäiset)
            `--+--+--o Platygasteroidea
               |  |  |?- Calliceratidae
               |  |  |-- Scelionidae
               |  |  `-- Platygasteridae
               |  `--+-- †Stigmaphronidae
               |     `--o Ceraphronoidea Haliday
               |        |-- Ceraphronidae Haliday
               |        `-- Megaspilidae Ashmead
               `--+-- Chalcidoidea Latreille (kiilupistiäiset)
                  `--+--o †Serphitoidea
                     |  `-- †Serphitidae
                     `--o Mymarommatoidea
                        `--o Mymarommatidae
                           `-- Palaeomymar [Mymaromma]

Reference(s):