Argentine Ant

Scientific Name: Linepithema humile

Order & Family: Order: Hymenoptera; Family: Formicidae

Size: Workers are 2.2 to 2.8 mm long; Queens are 4 to 6 mm long.

Argentine Ant

Natural Habitat

Typically found in urban areas, agricultural lands, and gardens, preferring moist soil under logs, stones, or pavement.

Diet & Feeding

Omnivorous and opportunistic, they feed on honeydew from aphids, sweet substances, proteins, and other insects.

Behavior Patterns

Highly social and invasive; they form massive supercolonies with multiple queens and lack aggression toward members of the same species from different nests.

Risks & Benefits

Major pest that displaces native ant species and protects crop-damaging aphids. They do not sting but can invade homes in massive numbers looking for food.

Identified on: 2/6/2026