author(s)
Manjunatha DK, Sharanabasappa, Sowmya E and Maruthi MS

abstract
From last two decades the biological control playing a major role in controlling the insect pests. The genus Chrysoperla contains several important species of predatory insects of which the common green lacewing, Chrysoperla carnea (Stephens) is a potential predator on many soft bodied insects. The knowledge of biology plays an important role in mass production and its utilization in pest management programme. To insight the information on description and duration of different stages of C. carnea, the present study was undertaken in the laboratory Agricultural University, Shimoga during the year 2014. The study revealed that the different host used for analyzing the biology showed a significant difference among themselves. The predator C. carnea had completed its incubation period in 3.50 - 4.00 days with 3.80 + 0.15 days on Corcyra cephalonica. 2.20 – 2.50 days with 2.39 + 0.13 days on Aphid and 2.50 – 3.30 days with 2.90 + 0.27 days on White fly which showed short period with respect to Aphid host. The predator took varying period of larval stage to complete with 8.90 – 11.50 days, 10.40 – 12.60 and 10.20 – 12.20 days on Corcyra, Aphid and White fly, respectively. Predator took 17.80 - 21.50 days and 30.20 - 35.50 days for male and female longevity respectively on Corcyra. 19.50 – 25.80, 35.50 – 38.50 days for male and female longevity in Aphid and 17.80 – 21.20, 33.20 – 36.80 days for male and female longevity in White fly. The highest egg laying capacity of 395 - 435 obtained with Aphid host.