A new species of the genus Periscelis Loew (P. stuckenbergi, Diptera: Periscelididae: Periscelidinae), the first from the Afrotropical Region, is described. Brief diagnoses of the family, subfamily, genus, subgenus and species are provided to facilitate identification of members of this uncommon family. A key to the subfamilies of the family and subgenera of Periscelis and habitus photographs and detailed illustrations of structures of the male terminalia are also included.
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Vol. 53 • No. 1