none Cotesia diurnii Chalikwar and Rao, a larval parasitoid of Exelastis atomosa Wals., had an average oviposition period 5.8 days, an average longevity of 7.5 days and produced an average progeny of 16.6 individuals with sex ratio (male:female) 1.365:1. The intrinsic rate of increase was 0.158 and population multiplied 25.99 times in mean generation time (T) 20.61 days.