An integrated approach to delimiting species borders in the genus Chrysotoxum Meigen, 1803 (Diptera: Syrphidae), with description of two new species. - Nedeljković, Zorica; Ačanski, Jelena; Đan, Mihajla; Obreht-Vidaković, Dragana; Ricarte, Antonio; Vujić, Ante (Contributions to Zoology, 2015)