Olfactory attraction of an egg parasitoid, Trichogramma chilonis, to the hot pepper (Capsicum annuum) and other host plants of its host insect species, Helicoverpa assulta, was studied in laboratory experiments. T. chilonis was attracted more to the hot pepper than the tobacco (Nicotiana tabacum), eggplant (Solanum melongena), carrot (Daucua carot var. sativa), or clean air flow. A higher attraction of T. chilonis was observed in combined leaf and green fruit of the hot pepper plant than leaf or fruit alone, and its red fruit had the least attractivity. But the combination of pepper odor and H. assulta sex pheromone did not attract more than the pepper odor sex pheromone alone.