Almost certainly a synonym of some extant superfamily, if the specimen is even an Orthoptera (or even a fossil).
Full reference: W. D. Pierce. 1944. Fossil arthropods of California 4. Two interesting orthopteroids from diatomaceous deposits. Bulletin of the Southern California Academy of Sciences 43:12-17
Parent taxon: Orthoptera according to W. D. Pierce 1944
Sister taxa: Aboilodea, Acrydiana, Alekhosara, Blattaceadup, Caelifera, Ensifera, Eremobiinae, Eremobiites, Legendreiidae, Lithymnetes, Locustidae, Locustoidea, Loxoedischia, Mantides, Nymphomorpha, Oligogetes, Orthophlebia longissima, Permophyllum, Phasgonuridae, Pinegia, Prophilaenites, Thnetodes, Tillyardiella, Titanoptera, Yinpingia
Subtaxa: Exaeretopteridae
Type: Exaeretoptera
Ecology:
Distribution: found only at South of abandoned pier at Fort MacArthur (Miocene of California)