A. A.  Stackelberg, ?Key to the Palearctic species of the genus Orthoneura Macq.?, 1953.

N. A.  Violovitsh, ?Identification key of Siberian species (Orthoneura)?, (Russian), pp. 49-56, 1979.

A.  Maibach, Detiefenau, P. G., and Speight, M. C. D., ?Generic limits and taxonomic features of some genera belonging to the tribe of Chrysogasterini (Diptera, Syrphidae) .1. Generic diagnosis and description of Riponnensia, Gen-Nov?, Annales de la Société Entomologique de France, vol. 30, pp. 217-247, 1994.