Abstract Background Nowadays, instead of chemicals, using microbial pesticides is very important and significant to protect the environment. Verticillium lecanii (Z), entomopathogenic fungus, widely used for management many pests. The aim this work determine whether small leafhopper, Empoasca flavescens F. (Homoptera: Cicadellidae), can be exterminated only by biopesticide— V. or not. Results A...