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.
Evanioidea, a small group of insects within the order Hymenoptera, comprises three families: Aulacidae and Gasteruptiidae, which share a closer evolutionary relationship than they do with Evaniidae.