Survey of medicinal plants aphids and it's natural enemies in Hamadan province of Iran

The pests is problems in culture development of the of medicinal plant. Because of the special application features of the plant in pharmaceutical industries organic culture of medicinal plants is severally interested for herbal medicine's company. Identify limited factors for production of specially these plants very important. For this considered, sampling was done using conventional methods include hand picking and snider trap. Collections were made weekly during the spring and summer. The survey was carried out in the period 2007-2009 in natural field and planted species in Hamadan province. Specimens include aphids and natural enemies were collected and returned on alcohl(70%) in Laboratory. In this research, 21 species of pests and 13 species of natural enemies were recognized.