Engel, Michael S.Ortega-Blanco, Jaime.Soriano, Carmen, Dr., 1976-Grimaldi, David A.Martinez-Delclos, Xavier.2013-03-202013-03-202013-03-20http://hdl.handle.net/2246/642323 p. : ill. (some col.) ; 26 cm.A new family of microhymenopteran wasps is described and figured from three new species discovered in Cretaceous amber of Spain (Albian) and New Jersey (Turonian). Spathiopterygidae Engel and Ortega-Blanco, new family, is allied to the Diapriidae and Maamingidae (Proctotrupomorpha: Diaprioidea), sharing with these families putatively derived features relative to Monomachidae. The family contains three genera and three species, all new: Spathiopteryx alavarommopsis Engel and Ortega-Blanco, new genus and species, and Myamaropsis turolensis Engel and Ortega-Blanco, new genus and species, both from the early Cretaceous (Albian) of Spain, and Spathopria sayrevillensis Engel, Ortega-Blanco, and Grimaldi, new genus and species, from the late Cretaceous (Turonian) of New Jersey. Spathopria sayrevillensis is reconstructed using X-ray synchrotron microtomography. In addition, a peculiar new genus and species, Iberopria perialla Engel, Ortega-Blanco, and Delclòs, of stem-group Diapriidae is described from Spanish amber. The distinctive features and character combinations of these taxa are discussed in connection with possible relationships to the surviving lineages of diaprioids.en-USSpathiopteryx alavarommopsis.Myamaropsis turolensis.Spathopria sayrevillensis.Iberopria perialla.Diapriidae.Diaprioidea.Wasps.Wasps, Fossil.Amber fossils.Spain.New Jersey.