The Evanioidea are a small hymenopteran superfamily that includes three families, two of which (Aulacidae and Gasteruptiidae) are much more closely related to one another than they are to the remaining family, Evaniidae.
The Evanioidea superfamily consists of three families: Aulacidae and Gasteruptiidae, which are closely related, and the remaining family, Evaniidae, is less closely related.