Insecta - Hymenoptera - Ephialtitidae

Full reference: A. P. Rasnitsyn. 1975. Hymenoptera Apocrita of Mesozoic. Transactions of the Palaeontological Institute Academy of Sciences of the USSR 147:1-134

Parent taxon: Ephialtitidae according to A. P. Rasnitsyn 1975

Sister taxa: Asiephialtites, Ephialtitinae, Karataviola, Kotaphialtites, Leptephialtites, Liadobracona, Mesephialtites, Micrephialtites, Parephialtites, Praeproapocritus, Proapocritus, Sessiliventer, Sippelipterus, Stephanogaster, Symphyogaster, Trigonalopterus, Karataus

Subtaxa: Symphytopterus ater, Symphytopterus clavicornis, Symphytopterus dubius, Symphytopterus geniculatus, Symphytopterus macrophthalmus, Symphytopterus minutus, Symphytopterus nigricornis, Symphytopterus nigridorsatus, Symphytopterus nigripes, Symphytopterus obliquus, Symphytopterus oculatus, Symphytopterus pallicornis, Symphytopterus pallipes, Symphytopterus robustus

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Type: Symphytopterus nigricornis

Ecology: