Sasakawa, M. & Ishizaki, H., 1999. Fungus gnats of the genera Exechiopsis Tuomikoski and Pseudexechia Tuom. in Japan (Diptera: Mycetophilidae). Entomological Science, 2, pp.147-156, illustr. Available at: http://www.online-keys.net/sciaroidea/1991_2000/Sasakawa_&_Ishizaki_1999_Exechiopsis_Pseudexechia_sp_n_Japan.pdf.