UC IPM Online UC ANR home page UC IPM home page


SKIP navigation


How to Manage Pests

Key to Identifying Common Household Ants

Antennal segments

Ant antennae are elbow-shaped and divided into segments.
  • The second character used to distinguish ant species is the antenna.
  • Count antennal segments beginning with the scape, the longest segment.
  • The last 2 or 3 segments may be enlarged, forming a club.
  • Not all ant species have clubbed antennae.

12-segmented antenna with a
3-segmented club

10-segmented antenna with a
2-segmented club

3-segmented club
2-segmented club

Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2017 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 our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   Contact webmaster.