“…However, it has been found that ant activity may slightly (Murdoch et al, 1995) or considerably (DeBach, 1951;Steyn, 1954; stimulate California red scale populations. It is assumed that ants disrupt or kill the California red scale parasitoids as an indirect consequence of ant-attendance to a coincident honeydew producer DeBach, 1951;. The main ant species implicated with the disruption of the biological control of the California red scale is the argentine ant Linepithema humile (Mayr) (Hymenoptera: Formicidae) (DeBach, 1951;Murdoch et al, 1995;Martinez-Ferrer et al, 2003).…”