An overview of the Syrphidae (Diptera) of Saudi Arabia Author Dawah, Hassan A. Author Abdullah, Mohammed A. 0000-0002-3323-3623 mohd_robiya@hotmail.com Author Ahmad, Syed Kamran 0000-0002-6211-2345 entosaif@rediffmail.com Author Al-Dhafer, Hathal 0000-0002-4911-2332 hdhafer@ksu.edu.sa Author Turner, James 0000-0003-2411-7396 urner@museumwales.ac.uk text Zootaxa 2020 2020-09-25 4855 1 1 69 journal article 8491 10.11646/zootaxa.4855.1.1 1ad9a0ab-ccd4-4047-9a29-f2dd287dc3e3 1175-5326 4411181 28A15E99-7A79-40CA-A0C6-1DC501B69E46 Genus Allobaccha Curran The genus Allobaccha occurs in the Afrotropical, Indo-Malayan, Australasian and Eastern Palaearctic Regions with approximately 78 species mostly in the Oriental region . Allobaccha species are small to medium sized, with a convex facial profile (facial tubercle not very marked), usually dark thorax and abdomen with pale markings, and abdomen without margin, weakly to strongly petiolate. Some Afrotropical species of Allobaccha have an infuscate pattern on their broadened wings ( Burt & Mengual 2017 ).