Acrobat Ant (Crematogaster spp.)

Abdomen Raises Like a “Flag” • Nest in Moist Wood

Acrobat Ant – Connecticut Identification & Moisture Association Guide:

Acrobat ants get their name from their unique ability to raise their heart-shaped abdomen over their head when disturbed. Found throughout Connecticut, they nest in damaged or decaying wood, making them a common indicator of underlying moisture issues.

Identification:

• Size: 1/8 inch
• Color: Brown, black, or bi-colored
• Abdomen: Heart-shaped and raised when threatened
• Movement: Quick and defensive

Behavior & Habitat:

Acrobat ants often nest in:

• Old carpenter ant galleries
• Moist wood
• Under stones
• Tree cavities
• Rooflines
• Deck posts

They commonly follow utility lines into homes.

Why They Invade Connecticut Homes:

They are drawn to:

• Moisture-damaged wood
• Leaky windows
• Roof leaks
• Attics and crawlspaces

Moist summers and storm seasons in Connecticut increase indoor activity.

Signs of Infestation:

• Trailing along foundations
• Sawdust from old nests (not created by acrobat ants)
• Activity around doors and windows
• Presence in bathrooms or kitchens

When to Call a Professional:

Because these ants indicate moisture issues, professional inspection is recommended.

Ant Control CT 

Additional Links:

• Carpenter Ant Page 
• Moisture Pest Page