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

A. A.  Stackelberg, ?The Palearctic [ibid.] species of the genus Orthoneura Macq. (Diptera, Syrphidae)?, Entomological Review, vol. XXXIII, pp. 1-21, 1953.

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