The Pyramid Ant (Dorymyrmex insanus) is light brown to reddish-brown with darker abdomen and typically measures ⅛ inch. Pyramid ants (Dorymyrmex insanus) are small, fast-moving ants named for the distinctive pyramid or volcano-shaped mound they build around their nest entrance. Workers are light brown to reddish-brown.

The Pyramid Ant is generally low-risk, but caution is still advised. No significant sting; not medically dangerous. Outdoor nuisance pest. Mounds can be unsightly in lawns.

In Arizona, pyramid ants are most often encountered in the following situations: Small pyramid or volcano-shaped mounds of loose soil in lawns, along sidewalks, or in open soil. Fast-moving light brown ants near the mound. Occasional foragers inside the home.

The Pyramid Ant is most active during: Spring through fall; most active in warm months. Arizona's warm desert climate can extend activity periods compared to other states, so year-round vigilance is recommended in the Phoenix metro and surrounding areas.

Treat mounds early. Keep lawn well-irrigated and maintained. Treat perimeter to prevent entry into the home.

Granular bait or contact insecticide applied to active mounds. Perimeter treatment for home entry prevention.

Most store-bought ant sprays kill only the workers you see, while the queen and colony remain protected underground. Effective Pyramid Ant control requires baiting or targeted colony treatments that workers carry back to the nest. Pest Control Bros uses professional-grade products and application methods that address the entire colony.