Saigusa, T., 1973. A systematic study of the Mycetophilidae of Japan (Diptera). part 1. A revision of the subfamily Ditomyiinae. Sieboldia, 4, pp.167-200. Available at: http://www.online-keys.net/sciaroidea/1971_80/Saigusa_1973_Ditomyiinae_of_Japan.pdf.