Pharaoh Ant

Scientific Name: Monomorium pharaonis

Order & Family: Hymenoptera: Formicidae

Size: 1.5 to 2.0 mm (approx. 1/16 inch)

Pharaoh Ant

Natural Habitat

Exclusively indoor dwellers in cooler climates, preferring heated, humid areas like kitchens, bathrooms, wall voids, and near hot water pipes. They nest in extremely small, unusual crevices.

Diet & Feeding

Omnivorous; prefers sweets, syrups, and honey but readily feeds on proteins like meats, grease, dead insects, and even shoe polish.

Behavior Patterns

They exhibit 'budding' behavior where a single queen breaks away from the main colony with workers to start a new nest, leading to rapid infestations that are widely dispersed. They are persistent foragers that create well-defined trails.

Risks & Benefits

Significant household pest; notorious for spreading pathogens (Salmonella, Streptococcus) in sterile environments like hospitals. They are very difficult to eradicate due to their budding capability, often worsening if sprayed with standard insecticides.

Identified on: 2/27/2026