Cole, F.R., 1921. Diptera from the Pribilof Islands, Alaska. Proceedings of the California Academy of Sciences, 4th series, vol. 11, pp.169-177. Available at: http://www.online-keys.net/sciaroidea/add01/Cole_1921_Diptera_from_Alaska.pdf.

Cole, F.R. & Lovett, A.L., 1919. New Oregon Diptera. Proceedings of the California Academy of Sciences, 9, pp.221-255, 4 pl. Available at: http://www.online-keys.net/sciaroidea/add01/Cole1919_NewOregon.pdf.

Cole, F.R. & Lovett, A.L., 1921. An annotated list of the Diptera (flies) of Oregon. Proceedings of the California Academy of Sciences, 4th series, vol. 11, pp.197-344.

Van Duzee, M.C., 1928. New Mycetophilidae taken in California and Alaska. Proceedings of the California Academy of Sciences, 17, pp.31-63, 34 fig. Available at: http://www.online-keys.net/sciaroidea/add01/Van Duzee1928_MycetsCA&AK.pdf.