A variety of responses had been reported on different coccinellid species, for example, higher handling time (Th) and attack rate (a) for 4th instar larvae than adults in H. convergens (Wells and McPherson, 1999), higher handling time and lower attack rate for 4th instar larvae than adults of Coleomegilla maculata DeGeer (Munyaneza and Obrycki, 1997), lower handling time and higher attack rate for 4th instar larvae than adults of H. axyridis and S. creperus(Lee and Kang, 2004; Wells et al., 2001).