Reference

Ana Grkovic, Jeroen van Steenis, Natasa Kocis Tubic, Zorica Nedeljkovic, Martin Hauser, Rüstem Hayat, Ozan Demirözer, Mihajla Dan, Ante Vujic, Snezana Radenkovic (2019): Revision of the bactrianus subgroup of the genus Eumerus Meigen (Diptera: Syrphidae) in Europe, inferred from morphological and molecular data with descriptions of three new species – Arthropod Systematics and Phylogeny – 77: 21 - 37.