Abstract

Myllocerus maculosus Desb. commonly known as cotton grey weevil is economically an important species pre-occupied in the literature as a minor pest of cotton, maize. arhar (Cajanus cajan), sugarcane, mango, apple, pomegranate, lady's finger etc. Recently it has been observed causing serious damage to bajra (Pennisetum typhoides), a very important cereal crop of Rajasthan. Although the preliminary work has been carried out on the biology and control of this pest by Trehan (1929) and Rahman (1940 a & b), so far estimation of population and its dynamics has not been studied. It is apparent that the lack of information for sex determination is a prohibiting factor for such studies. Present studies, therefore, should prove a great asset for those who are engaged in forecasting the pest outbreaks, studying the population dynamics and other related studies of this nature.

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