Vol. 11, Issue 11 (2022)

The laboratory studies on “Comparative biology of rice moth, Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae) on rice varieties” were carried out at laboratory of the Department of Agricultural Entomology, College of Agriculture, Dapoli, Dist. Ratnagiri 415 712 (Maharashtra). Two new rice varieties viz., Ratnagiri-7 (red rice) and Ratnagiri-8, recently released for cultivation in Konkan region of Maharashtra were selected and used for studying various aspects of biology of pest, growth and developmental characters of C. cephalonica infesting rice grains. The average fecundity, oviposition and incubation periods, hatching percentage, larval and pupal periods were recorded as 300.08, 4.12 and 4.02 days, 91.76 per cent, 32.91 and 9.04 days, respectively. The mean developmental period was found to be 51.90 days. The mean adult longevity for male and female adult was 9.51 and 7.67 days, respectively, whereas, mean sex ratio, per cent adult emergence and growth index was observed to be 1.09, 87.49 per cent and 1.68, respectively.