The name "Ingenia" derives from the Ingen Khoboor Depression of Bayankhongor Province, Mongolia, from whence it was collected, while the specific name yanshini was chosen in honour of academician Aleksandr Leonidovich Yanshin (1911–1999), who was adviser and mentor to Rinchen Barsbold during his time at the Paleontological Institute in St. Petersburg, Russia.
Deinodryinus? aptianus was first studied by the paleoentomologists Adalgisa Guglielmino and Massimo Olmi both of the University of Tuscia in collaboration with Alexandr Rasnitsyn of the Paleontological Institute, Russian Academy of Sciences.
N. antiqua was first studied by Nina D. Sinitchenkova of the Paleontological Institute of the Russian Academy of Sciences, with her 1999 type description being published in the Russian text Palaeontological Journal.
The fossils are in the collection of the Paleontological Institute, Russian Academy of Sciences, Moscow.
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Deinodryinus areolatus is known only from a single fossil, the holotype, specimen number PIN No. 964/60, which is housed in the A.A. Borissiak Paleontological Institute, Russian Academy of Sciences, in Moscow.
Gecatogomphius is known from the holotype PIN 1156/1, a three-dimensionally preserved nearly complete lower jaw found on the bank of the Vyatka River near the town of Gorki in the Kirov Oblast, and from PIN 4310/1 a single maxillary tooth plate from Berezovye Polyanki in Tatarstan.