—Monomorium pharaonis
Subfamily: Myrmicinae
Identifying characteristics
- Workers are all the same size, 1/16-inch long
- Yellow or honey-colored to orange
- Petiole with two nodes
- Thorax uneven in shape when viewed from side with no spines
- 12-segmented antennae with 3-segmented club
Behavior
- Feed on both living and dead insects
- Inside, feed on sweets, fats, and proteins
- Travel in set trails along carpets, countertops, cabinets, floors, and baseboards
- Found in places with moisture
- May use electrical wires and plumbing pipes to travel from room to room
- Colonies very mobile; workers, along with larvae, pupae, and even a few queens, may move to new locations if disturbed or if colony becomes too large
Nest type and size
- Nest in household structures such as wall and cabinet voids, behind baseboards, behind refrigerator insulation, inside hollow curtain rods, or in the folds of sheets, clothes, or paper
- Outdoors nest in debris or cracks and crevices
- Colonies with up to 300,000 workers with multiple queens
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