Yemeni neem seed kernels were analyzed for the first time for oil and azadirachtin contents. The average oil content was 47% oil while the average azadirachtine content in the tested samples was 4.4 mg/g. The latter was compared with 3, 2, 3, 6 and 3.7 mg dry from Senegal, Benin and India, respectively. Several concentrations of Azadirachtin from Kernels (Yemen seed) extracts were tested for the control of the Mexican bean beetle Epilachna varivestis 10-20 ppm of the tested samples of seed neem kernels gave very good control for the insect. The treated larvae showed reddish black spots on the dorsal side of the thorax and black legs, which are typical symptoms of azadirachin effects on the insect. This concludes that Yemeni neem kernels got a potential insecticide effect for the control of some agricultural pests.

Key Words :Azadirachtin, Mexican bean beetle, Neem, Plant protection