A. A.  Stackelberg, ?Acalyptrata, part 1?, List of Diptera of the Leningrad Region. III, pp. 103-191, 1958.

W.  Hackman, ?A check list of the Finnish Diptera. II. Cyclorrhapha?, Notulae entomologicae, vol. 60, pp. 117-162, 1980.