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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
All contents copyright © 2010 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /TOOLS/ANTKEY/ revised: January 5, 2010. Contact webmaster.