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University of Minnesota Extension

Extension > Garden > Diagnose a problem > What insect is this? > Insects found indoors > Winged Insects - 1/4 inch up to 1/2 inch > Pavement ant queen

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Pavement ant queen

Tetramorium caespitum

pavement ant queen

Jeff Hahn, University of Minnesota Extension

Pavement ant queen

Jeff Hahn, University of Minnesota Extension

Description: 1/4 inch long. Brown to dark brown; two-segmented petiole; two small spines on the thorax; striations (lines) on the head; head normal size in proportion to body.

Where/When: Pavement ants nest in the soil under objects, including concrete slab construction of home. Winged pavement ants are found indoors May through July as well during the winter.

Significance: Seeing winged pavement ants indicate a nest in the home. The presence of a nest is not damaging to a building and the presence of winged ants is just a nuisance.

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