TL;DR: The new family Maamingidae is proposed for Maaminga, gen. nov, from New Zealand, comprising two species, M. rangi, sp.Nov.
Abstract: The new family Maamingidae is proposed for Maaminga, gen. nov., comprising two species, M. rangi, sp. nov. and M. marrisi, sp. nov., from New Zealand. The delicate and slender M. rangi, sp. nov. is common in forest, particularly kauri forests of the northern part of the North Island. The more robust and stocky M. marrisi, sp. nov., which is polymorphic for wing size (brachyterous and fully winged), appears to be associated with coastal scrub and forest, particularly on offshore islands, but is also found in alpine snow tussock. Maamingidae is nominally placed within the Proctotrupoidea, and is probably related to the Diapriidae and Monomachidae. However, its relationships are unclear, at least in part due to the lack of phylogenetic resolution among the proctotrupoid families and other Proctotrupomorpha sensu Rasnitsyn. The relationships of Maamingidae are briefly discussed in the light of current morphological and molecular phylogenetic hypotheses.
TL;DR: 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) as discussed by the authors.
Abstract: 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 Delclos, of stem-group Diapriidae is described from Sp...