The Bigger Yellow Ant, commonly called the Citronella Ant, belongs to the genus Lasius. These ants are well known for producing a lemon-like scent when crushed, which gives them their common name. Citronella ants are subterranean ants that primarily live underground and are rarely seen except during swarming events.
Identification
Citronella ants are typically yellow to amber colored and measure about 1/8 inch long. Workers are uniform in size, while winged reproductive ants appear during seasonal swarms. The ants emit a citrus-like odor when disturbed.
Distribution and Habitat
Citronella ants are widely distributed across North America and commonly occur in lawns, gardens, forests, and landscaped areas. Colonies usually nest in soil beneath logs, rocks, and building foundations.
Life Cycle and Behavior
Citronella ants feed primarily on honeydew produced by underground aphids that live on plant roots. Because they remain underground most of the time, they are rarely seen unless colonies are disturbed or reproductive ants emerge for mating flights.
Pest Status
These ants are usually considered nuisance pests when winged swarmers appear indoors. However, they do not damage structures or contaminate food.
Prevention
- Seal cracks and entry points around foundations.
- Maintain proper drainage around buildings.
- Reduce excess soil moisture near structures.
Control
Most citronella ant issues resolve naturally after swarming flights end. Persistent indoor problems may require sealing entry points or professional pest control treatments.