A new lineage of enigmatic diaprioid wasps in Cretaceous amber (Hymenoptera, Diaprioidea). (American Museum novitates, no. 3771)

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American Museum of Natural History.
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.
23 p. : ill. (some col.) ; 26 cm.
Spathiopteryx alavarommopsis., Myamaropsis turolensis., Spathopria sayrevillensis., Iberopria perialla., Diapriidae., Diaprioidea., Wasps., Wasps, Fossil., Amber fossils., Spain., New Jersey.