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By: Mengual, XimoType: ArticleIn: African invertebrates : a journal of biodiversity researchVolume: 59Series:Issue: 1Date: 2018-4-18Page Range: 55--73Publication Info: Pietermaritzburg, South Africa Council of the Natal Museum 2001-Subjects: Afrotropical region astales flower flies hoverflies hoverflies identification key Ischiodon