Third instar larva specimens of A. fusca and E. elaeasa
were collected directly from oil palm plantations in the
municipality of Maria La Baja, Bolivar-Colombia (9°58’52” N,
75°17’55” W) where used for the assays (Figure 1). Organisms
were stored in glass containers covered with a plastic mesh
with a diet of fresh oil palm leaflets at (26依2) °C, relative
humidity of 70%-85% and photoperiod 10:14 h (light: dark)
and kept under these conditioning until used for assays,
within 96 h after collection