Gorochov A.V.1, Labandeira C.C.2 2012. Eocene Orthoptera from Green River Formation of Wyoming (USA) // Russian Entomol. J. Vol.21. No.4: 357–370 [in English].

1 Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St.-Petersburg 199034, Russia. E-mail: orthopt@ zin.ru

2 National Museum of Natural History, Smithsonian Institution, Washington DC 20013–7012, USA. E-mail: labandec@si.edu

KEY WORDS: Orthoptera, Eocene, Green River Formation, Wyoming, USA, review, new taxa.

ABSTRACT. A review of fossil Orthoptera from Green River Formation of Wyoming (Middle Eocene) is given. Pterotriamescaptor? americanus sp.n., Eomogoplistes longipennis gen. et sp.n., Pteromogoplistes grandis gen. et sp.n., Eogryllus unicolor gen. et sp.n., E.? elongatus sp.n., Eozacla arachnomorpha gen. et sp.n., E. problematica sp.n., Eotrella mira gen. et sp.n., Tettoraptor maculatus gen. et sp.n., Eotettix unicornis gen. et sp.n., and Eoerianthus eocaenicus gen. et sp.n. are described. Two species, Pteromogoplistes smithii (Scudder, 1890), comb.n. and Pronemobius tertiarius (Scudder, 1878) are restudied on the base of new material possibly belonging to these species; systematic position of them and of Eoerianthus? multispinosus (Scudder, 1890), comb.n. is clarified. Some general remarks on the Orthoptera fauna of Green River Formation are made.

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