Vujić, A., Radenković, S., Likov, L., Trifunov, S. and Nikolić, T. (2013) “Three new species of the Merodon nigritarsis group (Diptera: Syrphidae) from the Middle East”, Zootaxa. Auckland, New Zealand, 3640(3), pp. 442–464. doi: 10.11646/zootaxa.3640.3.7.