Catalogue of the Syrphidae of Egypt (Diptera) Author El-Hawagry, Magdi S. Author Gilbert, Francis text Zootaxa 2019 2019-04-05 4577 2 201 248 journal article 27386 10.11646/zootaxa.4577.2.1 edfb4093-4bf9-40ed-9fb4-bf492ccad12e 1175-5326 2629643 959CC8F8-E214-4A56-9343-CBCC2CBD43DD Genus MESEMBRIUS Rondani Mesembrius Rondani, 1857 : 50 . Type species: Helophilus peregrines Loew, 1846 , by monotypy. Prionotomyia Bigot, 1883 : 150 . Type species: Prionotomyia tarsatus Bigot, 1883 , by monotypy. Tityusia Hull, 1937 : 118 . Type species: Tityusia regulus Hull, 1937 , by original designation.