Insecta - Hymenoptera

Synonym: Ephialtitoidea Handlirsch 1906

Parent taxon: Apocrita according to M. J. Sharkey et al. 2012

Sister taxa: Aculeata, Apocritites, Bethylonymoidea, Brachycleistogastromorpha, Brachyopteris, Cenomanscelio, Ceraphronoidea, Cretacoformica, Cynipomorpha, Diapriites, Evanioidea, Ichneumonoidea, Kuafuidae, Megalyroidea, Platygasterites, Proctotrupomorpha, Proctotrypites, Scelionites, Trigonaloidea

Subtaxa: Eostephanitidae, Ephialtitidae, Stephanidae, Stigmaphronidae

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Ecology: