An experiment was conducted from December 2018 to March 2019 in the Biological Control laboratory, CHRS, Rajnandgaon at 26 ± 1ºC, RH 60 ± 10%. The studies on the life cycle of C. cephalonica reared on different cereals diets were observed in the terms of fecundity, Incubation period, larval period, pupal period, longevity, total life cycle, and morphological measurement of full-grown larvae. The results observed that the diet media sweet corn (100%) was the best media for mass production of C. cephalonica due to their short incubation period, short larval period, short pupal period, short male and female longevity, and short male and female total life cycle with 4.73, 24.20, 8.27, (3.00 and 4.67) and (40.20 and 41.87) days and followed by the second-best and cheapest diet media maize (100%) with 5.20, 32.00, 8.53,(3.07 and 5.33) and (48.80 and 51.06) days, respectively. High fecundity (255.60 no. of eggs/female), maximum larval length (12.75 mm), and weight (26.07 mg) was observed in sweet corn (100%) followed by maize (100%) with fecundity 250 no. of eggs/female, 12.15 mm larval length and 21.93 mg larval weight.