Pavement Ant

Appearance

Light brown to black with appendages lighter than rest of the body. About 1/10-inch long. Parallel lines on head and thorax with a 12-segment antennae.

Slow-moving; a particular nuisance around buildings with slab-on-grade construction.

Habit

Invades buildings while foraging for food throughout the year. Nests are outdoors under stones, along curbs or in cracks of pavement. Can nest indoors in walls and under floors.

During early spring, colonies attempt to conquer new areas and often attack nearby enemy colonies. These result in huge sidewalk battles, sometimes leaving thousands of ants dead. Because of their aggressive nature, they often invade and colonize seemingly impenetrable areas. In summer time the ants dig out the sand in between the pavements to vent the nests.

Diet

Omnivorous. Will eat many things, but prefers greasy and sweet foods.

Reproduction

Queen produces five to 20 eggs per day; brood develops in about 40 days; young go through three larval stages.