After mating, winged males and females, also known as swarmers, mate during a brief flight. The male dies shortly after mating, and the queen sheds her wings and searches for a suitable nesting site. She prefers to nest in soft and moist wood of hollow trees, logs, or stumps. In the nest, the queen lays about 20 eggs that develop into adult workers in approximately two months.
The first brood of workers is tiny as they receive nourishment from the food reserves stored in the queen’s body. Subsequent broods are larger as they receive enough food from foraging workers. When the workers mature into adults, they take up the responsibility of foraging for food, enlarging the nest, and feeding and caring for the queen and subsequent larvae. Carpenter ants feed on dead insects, small invertebrates, and honeydew secreted by scale insects and aphids.