Pavement ants are nuisance pests found primarily in the northeastern US and throughout Canada. Their name derives from their tendency to build nests underneath and inside the cracks of sidewalks, driveways and slab foundations. As aggressive colonizers, they often wage war against nearby colonies in the summertime, leaving behind hundreds of small, dark corpses across concrete surfaces in the aftermath of the conflict.
Typically dark brown or black, pavement ants feature a pair of spines along their back and groves on the head and thorax. They are small with an average size range of 2.5 to 4 mm. They are capable of building large nests with up to 30,000 individuals, and each colony features the standard ant class system of workers, drones and a queens. The drones and young queens, both of which feature wings, mate in a flying swarm.
These ants feed on small seeds, grease and some other insects. They are strongly attracted to sweets and fruits. Studies have shown that pavement ants will forage as far as 30 feet away from their nests for food, and they leave behind pheromone trails so that other workers can follow.