Insects are directly beneficial to human by producing honey, silk, wax and other products. Indirectly, they are impbrtant as pollinators of crops, natural enemies of pests in biocontrol, scavengers and food for other creatures. At the same time, insects are major pests of humans and domesticated animals because they destroy crops and are vector of diseases. In reality, less than one percent of insects species are pests and only a few hundreds of these are consistently a, problem. In context of Agriculture, an insect is a pest if its presence or damage results in economically important loss (Weeden et al., 2004).