J. M.  Aldrich, ?Notes on the synonymy of Diptera?, Proceedings of the Entomological Society of Washington, vol. 30, pp. 142-145, 1928.

J. M.  Aldrich, ?Notes on the synonymy of Diptera, No. 4?, Proceedings of the Entomological Society of Washington, vol. 32, pp. 25-28, 1930.

F.  Hendel, ?Kritische und synonymische Bemerkungen über Dipteren?, Verhandlungen der Zoologisch-botanischen Gesellschaft in Wien, vol. 81, pp. 4-19, 1931.

F.  Hendel, ?Neue acalyptrate Musciden aus der paläarktischen Region (Dipt.)?, Deutsche entomologische Zeitschrift, vol. 1933, pp. 39-56, 1933.