Scarparo, G., R. Wolton, M. Molfini, L. C. Pinna, and A. D. Giulio. “Comparative Morphology of Myrmecophilous Immature Stages of European Microdon Species (Diptera: Syrphidae): Updated Identification Key and New Diagnostic Characters”. Zootaxa, vol. 4789, no. 2, June 2020, pp. 348–370, doi:10.11646/zootaxa.4789.2.2.