An updated checklist of Syrphidae (Diptera, Brachycera) from Iran.

An updated checklist of Iranian Syrphidae (Diptera: Syrphoidea) is presented based on literature records with the latest taxonomic and nomenclatural changes. A total of 269 valid species in 70 genera among four subfamilies have been known from Iran, which is approximately 4.27 percent of the world's total known Syrphidae. Among these, 145 species and 31 genera were added to the previous list. Of the 70 genera Eumerus Meigen (35 species, 13.01%) and Merodon Meigen (26 species, 9.67%), are the most specious, whereas 30 genera are represented in Iran by only one recorded species. The majority of Iranian hoverfly species are exclusively distributed in the Palaearctic region, while 21 species are known only from Iran and possibly endemic to the country. [ABSTRACT FROM AUTHOR]