Hippa, H., Mattsson, I. & Vilkamaa, P., 2005. New taxa of the Lygistorrhinidae (Diptera: Sciaroidea) and their implications for a phylogenetic analysis of the family. Zootaxa, 960, pp.1-34. Available at: http://www.online-keys.net/sciaroidea/2000_/Hippa_et_al_2005_Lygistorrhinidae_phylogeny_gen_n.pdf.