Chandler, P.J., 1977. Some fungus gnats of the tribe Exechiini (Dipt. , Mycetophilidae) new to the British Isles. Proceedings Trans. Br. ent. nat. Hist. Soc., 10, pp.71-85, illust. Available at: http://www.online-keys.net/sciaroidea/1971_80/Chandler_1977_fungus_gnats_Exechiini_sp_n.pdf.