HYMENOPTERA, Tiphioidea -- Members are now grouped with Vespoidea.
Please refer also to the following link for details on this group:
Tiphioidea = Link 1
The several families were grouped with the Vespoida by Goulet & Huber (1993).
Pilgrim, E. M., C. D. Von Dohlen & J. P. Pitts. 2008: Molecular phylogenetics of Vespoidea indicate paraphyly of the superfamily and novel relationships of its component families and subfamilies. Zoologica scripta, 37: 539-560.