SSYMANK, A. Review of the species of Betasyrphus Matsumura, 1917 (Diptera: Syrphidae) from Madagascar with description of a new species. Zootaxa, Auckland, New Zealand, v. 2417, n. 1, p. 40–50, 2010. DOI: 10.11646/zootaxa.2417.1.2. Disponível em: https://mapress.com/zt/article/view/zootaxa.2417.1.2. Acesso em: 20 apr. 2025.