Inhibitory effects of L. angustifolia and Z. multiflora essential oils were evaluated on reproduction and F1 progeny production of C. maculatus. Insects culture and bioassays were conducted at 30 ±1ºC, 60±5% RH and dark condition. Essential oils were taken by hydrodistilation. The results indicated that there was a negative and significant linear relationship between reproduction of beetles and oil concentration. Similar relationships was found between F1 progeny and oil concentration. Comparison of regression slopes showed that L. angustifolia oil was more effective than Z. multiflora oil on reproduction and F1 progeny population. The essential oils analysis by GC-MS showed that the main compounds of L. angustifolia oil were linalool, 1,8-cineol, rosefuran epoxide, menthone, isomenthol and dihydro carvone (trans) and those of Z. multiflora oil were thymol, linalool and p-cymene. The results indicated that these two essential oils especially L. angustifolia oil might be suitable alternatives for stored products protection against C. maculatus.

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