Senaspis Macquart, 1850: 437.

Meyer, Marc De, Goergen, Georg & Jordaens, Kurt, 2020, Taxonomic revision of the Afrotropical hover fly genus Senaspis Macquart (Diptera, Syrphidae), ZooKeys 1003, pp. 83-160 : 83

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 ).

Figures

Figures 68 - 73. Senaspis species, right wing 68 S. elliotii Austen (♂) 69 - 71 S. elliotii Austen close-up apical end 72 S. flaviceps Macquart (♂) 73 S. haemorrhoa (Gerstaecker) (♂).

Figures 77 - 79. Senaspis species, right wing 77 S. umbrifera (Walker) (♂ holotype) 78 S. xanthorrhoea (Bezzi) (♂) 79 S. pennata (Herve-Bazin) (♀).