Department of Agricultural Entomology, Tamil Nadu Agricultural University, Agricultural College and Research Institute, Madurai - 625104, India.
*Present Address: Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641003, India.
The total grub period and pupal period varied from 8.60 (Helicoverpa armigera eggs) to 11.40 (H. armigera neonate larvae), and 7.50 (Amrasca devastans) to 8.40 (H. armigera neonate larvae), respectively. The total life cycle of C. carnea from egg to adult emergence varied from 16.60 (Aphis craccivora) to 19.80 (H. armigera neonate larvae) days. The total number of preys consumed by Chrysoperla carnea grubs was more on Corcyra cephalonica eggs (700.90) and less on A. devastans (270.00). Among the insect hosts, C. carnea grubs showed more preference to the host eggs and the final instar grub consumed more number of preys compared to earlier instars.
