Species diversity survey of flowerflies (Diptera:Syrphidae) in Damavand

The Syrphidae family is one of the largest families of Diptera order which known as Hover fly and Flower fly in the world. This family is consist 3 sub families and 15 tribes and about 6000 species. Flower flies in adult stage feed entirely on nectar and pollen and as some species feed on aphids at larval stage, they play important role in biological control. In present study, faunestic investigation was carried out in Damavand, during 2009-2010. Then ecological indices include: Measures of heterogeneity Simpson and Shannon-Winer, measures of evenness Simpson, Camargo and Smith-Wilson, species Richness, Variance and standard deviation were estimated. Adult specimens were collected with sweeping net and collected specimens were transferred to Shahid Beheshti University laboratory, and were identified using keys identification such as:Stubs & Falk,1996; Bi-Bienko, 1988 and Speigh & Sarthou, 2008. Identified species sent to Dr. Barkalov from Russia for confirmation. A totally, 25 species from 2 sub families Syrphinae and Eristalinae were collected.