This study tests the interference of three ant species on the biological control of the vine mealybug P. ficususing the parasitoids Anagyrussp. near pseudococci(as identified by Triapitsyn et al., 2007) and C. perminutus. This investigation used the presence and absence of these ant species to quantify their individual impact on the parasitoids under controlled laboratory conditions. For the purposes of this study,Anagyrus sp. near pseudococcishall be referred to as Anagyrussp. from this point onwards.