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Kjærandsen, J. et al., 2009. On the genus Urytalpa Edwards (Diptera: Keroplatidae) in the Nordic and  Nearctic regions, with fixation of a new type species and a key to world males. Zootaxa, 2160, pp.29-50. Available at: http://www.online-keys.net/sciaroidea/2000_/Kjaerandsen_etal_zt02160p050.pdf.

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