[1] Ainigmapsychops inexspectatus is known only from one fossil, the part side of the holotype, specimen number SRUI 99-96-76, which is housed in the collections of the Stonerose Interpretive Center in Republic, Washington.

The specimen is preserved as a compression fossil in silty yellow to grayish shale, which was recovered from outcrops of the Tom Thumb Tuff member of the Klondike Mountain Formation.

Ainigmapsychops was first studied by the paleoentomologists Vladimir N. Makarkin of the Far Eastern Branch of the Russian Academy of Sciences and S. Bruce Archibald from Simon Fraser University in Burnaby, British Columbia.

[1] The specific epithet inexspectatus is the Latin word meaning "unexpected, unlooked for", alluding to the serendipitous find of the wing.

[1] The holotype is composed of a single partially complete fore-wing which is missing both the basal and the apical areas.