Faunistical overview of the European species of the genera Brachyopa Meigen, 1822 and Hammerschmidtia Schummel, 1834 (Diptera: Syrphidae)Published in Bonn zoological Bulletin, in 2020, in volume 69, issue 2, pages 309-366Created: 2025-01-16, modified: 2025-01-16