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How to Manage Pests

Key to Identifying Common Household Ants

This key includes the ant species that are most likely to be a nuisance around California homes and structures. Many other ant species occur in California, but most are not home invaders. References | Acknowledgment

  • Begin key
  • Click through the key until you get to a summary screen of the ant that the key identified

Supplementary information

Already know your species? Click on an illustration below to go directly to a summary screen
Odorous house ant Argentine ant Pharaoh ant Carpenter ant
Pavement ant Red imported fire ant Southern fire ant

Thief ant

Related information

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Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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