Abstract: Coleopteran insects constitute major stored grain pests whose control measures are mainly carried out by fumigants. Use of botanical insecticides has expanded impetus in recent insect pest management programme due to minimum health hazards and low toxicity. In present investigation, nimbecidine has been used for the control of Alphitobius diaperinus, a minor stored grain pest. So far its effects on the post embryonic development are concerned; substantial decline in survival rate, delayed development, declining levels of fecundity as well as substantial mortality were noticed.