none Influence of the food plants of Heliothis armigera (Hb.) on the degree of parasitism by exotic parasite Cotesia kazak Telenga (Hymenoptera: Braconidae) was studied in cages in the laboratory on 7 food plants. In single plant choice test cotton was most preferred. Next in order of preference were tomato and okra. Dolichos, pigeonpea, cowpea and chickpea were least preferred. In multiple choice test, however, cotton and okra were preferred followed by tomato. Parasites were seen visiting these plants very frequently and high parasitism was recorded on these plants. Chick pea, pigeon pea, cowpea and Dolichos were the least preferred food plants.