Abstract
Despite the species richness of the blow fly (Calliphoridae: Diptera) fauna (1600 species), the relevant environmental, medical, agricultural, and forensic knowledge of these species found in Saudi Arabia is limited. As part of a study on the biodiversity of Diptera of south-western Saudi Arabia a survey of the Diptera fauna of Jazan, Asir and Najran was performed between 2010-2016 at 17 sites, mainly using Malaise traps, sweep nets and baited traps. Eighteen species of Calliphoridae were identified and recorded in this study, seven of which were recorded for the first time. This makes the total number of Calliphoridae species in Saudi Arabia (including 26 species previously recorded and excluding two species which were synonymized namely: Rhyncomya zumptii Peris 1952; Chrysoma regalis Robineau-Desvoidy 1830) to be 44. A list of all species of Calliphoridae recorded from Saudi Arabia is provided. Images of five species are presented. Biological information on each species (where known) and geographical distribution are included. In addition to the results of the identifications all available literature about Calliphoridae of Saudi Arabia is summarized and analysed. The species recorded in this study are more Afrotropical in origin than they are to other regions. The need for further field and laboratory work and surveillance is highlighted.