**1. Introduction**

Chemical communications in insects are exploited for many features as food seeking and preference, orientation, recruitment, defense, reproductive habitats, predator recognition, and mate attraction [1]. Chemical communication is distinguished by its effectiveness over long distances than others as mechanical and visual communications. Various active compounds were isolated and identified from different plant species that explore several activities toward other organisms [2–5]. The wide range of these compounds affects different insect pests in different ways. Herbivorous insects may use host plant volatiles for determination of food, mates, and/or oviposition and hibernation sites by stimulation of insect chemoreceptor cells in taste sensilla present on antennae, tarsi, and mouthparts [6]. The manipulation of insect behavior occurs by detection of the chemical stimuli known as semiochemicals [7] or infochemicals [8]. Semiochemicals are defined as informative molecules released from one organism that evokes either a behavioral

or physiological response between members of the same or different species. They are mainly used in plant-insect or insect-insect interactions as alternative or complementary components to insecticide approaches in different integrated pest management (IPM) strategies. Such compounds are mainly affecting the behavior of various insect pests via chemical signals which occur between insect and insect or plant and insect. Semiochemicals considered a promising component in IPM programs for controlling insect pests. They are involved in different control strategies such as monitoring, mass trapping, mating disruption, and attract-and-kill and push-pull strategies [1].
