Black Garden Ant

Scientific Name: Lasius niger

Order & Family: Order: Hymenoptera; Family: Formicidae

Size: Workers: 3–5 mm; Queens: 6–9 mm

Black Garden Ant

Natural Habitat

Open areas, gardens, under paving stones, and near human structures; common throughout Europe and parts of North America.

Diet & Feeding

Omnivorous; feeds on nectar, seeds, small insects, and famously 'farms' aphids for their honeydew.

Behavior Patterns

Highly social insects living in large underground colonies with a single queen. They exhibit trail-following behavior using pheromones and are most active during the day.

Risks & Benefits

Generally harmless to humans as they do not sting, though they can become household pests. Benefits the ecosystem through soil aeration and by preying on other small garden pests.

Identified on: 3/31/2026