Pavement Ant

Tetramorium caespitum

pavement ant

Adult pavement ant; note two nodes (April Nobile,

pavement ant

Pavement ant with wings (Whitney Cranshaw, Colorado State University,

pavement ant

Pavement ant swarm (Joseph Burger,


  • two nodes (bumps between middle and rear body sections)
  • light to dark brown in color with fine grooves lining the head and thorax (middle body section)
  • legs and antennae lighter in color than the rest of the body
  • workers of one size

Nesting Habits

  • characteristically produce small mounds at the entry of nests
  • nests often located outdoors under stones, pavement cracks, wood, next to buildings and under building foundations
  • enter homes through cracks in concrete
  • nest in walls, under floors and around sinks
  • typically swarm in spring after rain; can swarm indoors


  • prefer greasy and protein materials such as meats, pet food, sweets, bread, nuts and insects


  • contaminate foods and food-prep areas
  • nuisance pest indoors and outdoors

IPM Recommendations

  • Inspect: locate and destroy nests.
  • Store food in airtight containers.
  • Dispose of trash regularly.
  • Clean spills and food daily.
  • Fix leaking pipes/plumbing.
  • Seal potential ant entryways.
  • Use insecticidal baits.

Additional Resources:

IPM for Ants: Integrated Pest Management in Sensitive Environments (University of Nebraska-Lincoln Extension)