A Preliminary Study on Fauna of Flower Fly Fauna (Syrphidae) in Koohdasht County (Lorestan province)

Insects of flower flies, Syrphidae are the best known predators that feed on wide variey of pests, especially aphids.  The fauna of this family was studied in fileds, orchards, pastures and forests of Kuhdasht County during 2009-2010. The specimens were collected using sweep net and Malaise trap during growing season. The dominant species of flower flies were determined based on number of insects collected during study. The results showed that a total of 21 species belonging to two subfamily and 12 genera were collected and identified. In this research Melanostoma melineum and Eupeodes corolla were determined as dominant species of the Syrphid family in Kuhdasht district. All identified species were reported the first time in Kuhdasgt County. All of samples were kept in the insect collection of the Department of Plant Protection, Faculty of Agriculture and Natural Resoures of the Islamic Azad University of Arak. The list of identified species are as follows:Subfamily Syrphinae  Episyrphus balteatus (De Geer, 1776); Ischiodon aegyptius (Wiedemann, 1830); I. scutellaris (Fabricius, 1805); Eupeodes corolla (Fabricius, 1794); E. nuba (Wiedemann, 1830); Scaeva albomaculata (Macquart, 1842); S. dignota (Rondani, 1857); Sphaerophoria rueppelli (Wiedemann, 1830); S. scripta (L., 1758); S. turkmenica Bankowska., 1964; Melanostoma melinum (L., 1758); Chrysotoxum parmense Rondani, 1845; Paragus bicolor (Fabricius, 1794); P. compeditus Wiedemann,1830. Subfamily Milesiinae Eristalinus taeniops (Wiedemann, 1818); E. aeneus Scopoli, 1763); E. megacephalus (Rossi, 1794); Eristalis arbustorum (L., 1758); E. tenax (L., 1758); Eumerus tuberculatus Rondani, 1857; Syritta pipiens L., 1758).