Kjærandsen, J., 2005. A review of fungus gnats in the tribe Exechiini (Diptera, Mycetophilidae) from the J. W. Zetterstedt collection at the Museum of Zoology in Lund, Sweden. Zootaxa, 856, pp.1-35. Available at: http://www.online-keys.net/sciaroidea/2000_/Kjerandsen_2005_types_of_Zetterstedt.pdf.