Gilasian, E., van Steenis, J. and Parchami-Araghi, M. 2020. Review of the Eumerus tricolor species group (Diptera: Syrphidae) in Iran, with description of six new species. European Journal of Taxonomy. 722, 1 (Nov. 2020), 106–152. DOI:https://doi.org/10.5852/ejt.2020.722.1139.