The generalist predatory ladybirds Hippodamia variegata (Goeze), Coccinella septempunctata L. and the lacewing Chrysopa pallens (Rambur) are of major importance for the control of aphids on agricultural crops. To investigate intraguild predation (IGP) intensity as related to life cycle stages of involving protagnists, experiments were conducted to evaluate IGP between H. variegata and C. septempunctata and between H. variegata and C. pallens at different stages. Thirty pairs of life stages (for the exception of pupa) were tested in the greenhouse. A pair of stages with equal number of insects was released onto a potted cotton plant without the presence of aphids, and survivors were recorded 24 hours later. The results showed that in pairings between different stages of two predators, later stages survived significantly more than earlier stages. The intensity of predation of adults was dependant on earlier life stages in a quadratically functional relationship. In pairings between same stages of two predators, H. variegata adults survived less than their counterparts of C. septempunctata, but more than those of C. pallens; H. variegata larvae (L1 and L4) survived less than their counterparts of C. pallens, but equally to those of C. septempunctata. The results of this study suggested that in the absence of extraguild prey (aphids), the intraguild predation intensity among H. variegata, C. septempunctata and C. pallens may depend on life stages when different life stages are encountered, but on other factors when same life stages encounter each other.