Taxonomic revision of the Afrotropical hover fly genus Senaspis Macquart (Diptera, Syrphidae) Author Meyer, Marc De https://orcid.org/0000-0003-0755-2898 Royal Museum for Central Africa, Invertebrates Section and JEMU, Leuvensesteenweg 13, B 3080 Tervuren, Belgium marc.de.meyer@africamuseum.be Author Goergen, Georg https://orcid.org/0000-0003-4496-0495 International Institute of Tropical Agriculture, Biodiversity Centre, 08 BP 0932 Tri Postal, Cotonou, Benin Author Jordaens, Kurt Royal Museum for Central Africa, Invertebrates Section and JEMU, Leuvensesteenweg 13, B 3080 Tervuren, Belgium text ZooKeys 2020 2020-12-14 1003 83 160 http://dx.doi.org/10.3897/zookeys.1003.56557 journal article http://dx.doi.org/10.3897/zookeys.1003.56557 1313-2970-1003-83 5D883EC653064AC3A0D78CA867324596 3CD12B279B9C50768125F2697B2F0E98 Senaspis Macquart, 1850: 437. Senaspis Macquart, 1850: 437. Type species: Senaspis flaviceps Macquart, 1850 (by monotypy). Protylocera Bezzi, 1912: 414 [unnecessary replacement name]. Triatylosus Hull, 1949: 398 (as subgenus). Type species: Xylota dibaphus Walker, 1849 (by original designation). Generic diagnosis. Senaspis species are morphologically characterized by the combination of the following characters: eyes bare and maculate (less conspicuous in dried specimens), dorsal facets in male usually only slightly larger than ventral facets, more pronounced so in S. dibapha (Walker, 1849) and S. nigrita (Bigot, 1859); antennal arista bare; frons in lateral view with distinct protuberance; wing with cell r1 usually closed and petiolate, or narrowly open at most (see Fig. 69 ) (if distinctly open then hyaline, without dark markings; see Senaspis pennata ; Fig. 79 ); vein R4+5 strongly sinuate; thorax with triangular (dorsomedial) part of anepimeron bare, katepimeron bare or pilose at least in dorsal part; metatibia with conspicuous pile on at least apical half ventrally (except in S. flaviceps ).