Van Steenis, Jeroen, Heikki Hippa, and Valeri A. Mutin. “Revision of the Oriental Species of the Genus Sphegina Meigen, 1822 (Diptera: Syrphidae)”. European Journal of Taxonomy0, no. 489 (December 20, 2018). Accessed April 29, 2024. https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/622.