Abstract
In 2006 a study of Syrphidae (Diptera) was carried out in the region of Damghan, Semnan Province of Iran, recording 17 species at five collecting sites, comprising altogether 1076 specimens. Two species, Cheilosia cumanica (Szilády, 1938) and Paragus serratus (Fabricius, 1805) are new to the Iranian fauna. Flower visiting was recorded on 11 species of plants, Raphanus sativus being the most commonly visited plant.