none The rate of multiplication of larval parasitoid Bracon kirkpatricki Wilkinson of cotton bollworms Earias vitella, Fabricius and Pectinophora gossypiella Saunders was studied (on C. cephalonica) at 28 +- 1.5 degree C and 67.5 +- 7.5% relative humidity with a supply of 30% honey and 20% sucrose. The net reproductive rate (Ro) of the parasitoid was 100.32. The intrinsic rate of natural increase (r-m) was 0.2383 while the finite rate of increase lambda was 1.2691 females a day. the doubling time (DT) of the population was 2.9084 and it was able to multiple 5.3024 times a week. When B. kirkpatricki reached stable age distribution, its egg formed 38.1313% of its population, the larvae 31.7786%, the pupae 21.0608% and the adults 8.9739%.