“NEW DATA ON THE GENUS SYRPHUS FABRICIUS, 1775 (DIPTERA: SYRPHIDAE) FROM THE BALKAN PENINSULA INCLUDING THE FIRST RECORD OF SYRPHUS NITRIDIFRONS BECKER, 1921” (2010) Acta Entomologica Serbica, 15(1), pp. 91–105. Available at: http://147.91.73.126/index.php/aes/article/view/113 (Accessed: 5 October 2024).