Pavement Ant - School IPM - USU Extension

    Pavement Ant

    Tetramorium caespitum

    pavement ant

    Adult pavement ant; note two nodes (April Nobile, Antweb.org)

    pavement ant

    Pavement ant with wings (Whitney Cranshaw, Colorado State University, Bugwood.org)

    pavement ant

    Pavement ant swarm (Joseph Burger, Bugwood.org)

    Identification

    • 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

    Diet

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

    Significance

    • 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)