Twitter Facebook
Honor Guard Pest Management Services
  • Brown Recluse Spider
  • Black Widow Spider
  • German Cockroach
  • American Cockroach
  • Smokybrown Cockroach
  • Subterranean Termite
  • American Dog Tick
  • Brown Dog Tick
  • Cat Flea
  • Carpenter Bee
  • Boxelder Bug
  • Carpet Beetle
  • Casemaking Clothes Moth
  • Centipede
  • Indian Meal Moth
  • Lady Beetle
  • Odorous House Ant
  • Acrobat Ant
  • Blow Fly
  • House Fly
  • Cluster Fly
  • House Cricket
  • Paper Wasp
  • Yellowjacket
  • Sawtooth Grain Beetle

Pest ID: Odorous House Ant

Common Name:
Odorous House Ant

Scientific Name:
Tapinoma sessile

House ant workers are about the same size, about 1/16″ – 1/8″ (2.4-3.25 mm) long. Body light brown to black. Antenna 11 segmented with a 3 segmented club. One pair of dorsal spines on thorax with 2 node pedicel. Abdomen is heart shaped when viewed from above and sharply pointed at rear. Stinger is present. These odorous ant workers emit a disagreeable odor when disturbed; thus the name. Colony may be composed of several hundred to 100,000 ants with multiple queens in each colony.

Places Most Commonly Found:
Inside: Odorous House Ants in the house usually construct their nests in wall voids, particularly around hot water pipes and heaters. Also nest in crevices around sinks, cupboards, cabinets, etc.

Most Active Period:
Active all year but development more rapid during summer months. Swarmers most active from May to mid July.

Difficulty of Control:
Difficult to control as they will move several times a year and will split the colony when stressed.

Check out the Acrobat Ant as well in the Pest ID Guide.

Check us out!

Accredited with the Better Business Bureau