Argentine Ant (Linepithema humile)
Argentine ants are small (2.5-3mm) brown ants with a single node in the waist. They are typically found travelling in well defined trails between nests and food sources. Argentine ants have an impact in vineyards by protecting honeydew producing insects.
Look for: Presence of ants and bark damage. During packing, special attention must be paid to argentine ants to avoid this pest from contaminating the grapes and packing boxes.