Fig. 20. Right surstylus, dorsal view. A in Review of the Eumerus tricolor species group (Diptera: Syrphidae) in Iran, with description of six new species

Fig. 20. Right surstylus, dorsal view. A. Eumerus atricolorus Gilasian & van Steenis sp. nov., holotype (HMIM). B. E. brevipilosus Gilasian & van Steenis sp. nov., holotype (HMIM). C. E. chekabicus Gilasian & van Steenis. sp. nov., holotype (HMIM). D. E. coeruleus (Becker, 1913), Chekab Valley, Iran (HMIM). E. E. ovoformus Gilasian & van Steenis sp. nov., holotype (HMIM). F. E. richteri Stackelberg, 1960, Lar, Iran (HMIM). Scale bars = 0.1 mm.Published as part of Gilasian, Ebrahim, Steenis, Jeroen van & Parchami-Araghi, Mehrdad, 2020, Review of the Eumerus tricolor species group (Diptera: Syrphidae) in Iran, with description of six new species, pp. 106-152 in European Journal of Taxonomy 722 on page 141, DOI: 10.5852/ejt.2020.722.1139, http://zenodo.org/record/423928