Pavement ants measure around 1/8-inch in length and have brown to black bodies, pale legs and antennae. These pavement ants are found throughout the Eastern United States and are major pests in the Upper Midwest. Pavement ants earned their name because they nest in cracks in driveways and under the sidewalks, piling the resulting dirt in a mound on top of the pavement.

Pavement ants also dwell in the undersides of logs, bricks, stones, boards and patio blocks. Pavement ants may also nest under mulching or open soil close to the building foundations. They seldom nest indoors, but when pavement ants do enter buildings, they are seen under floors, inside insulation and within walls.

Pavement ants undergo complete metamorphosis, passing through the egg, larval and pupal stages before becoming adults. Unlike other ants, pavement ants mate for several days, and the period of their mating is lengthened by heat and humidity. Mating swarms can contain an extremely large number of reproductives.

A classic colony of pavement ants includes multiple queens and numerous workers. A queen establishes a fresh colony of pavement ants by laying eggs. Pavement worker ants then tend the queen’s brood until they develop into mature adults. During their development period, broods are transferred from location to location to protect them from fluctuations in moisture and temperature.

Pavement ants will feed on a wide range of foods, including meats, grease, live and dead insects, seeds and honeydew from aphids. They prefer to eat greasy foods, and can eat the majority foods consumed by humans. They forage for food up to 30 feet from their colonies and set up trails to food sources from their nests. Pavement ant workers enter houses to forage and can become a nuisance when big groups infest a kitchen or garden patio. They are not aggressive, but they can bite and sting.

Carpenter ants dwell inside the wooden structures, excavating galleries to ensure warmth and protection for their young larvae. These galleries contain slit-like windows, which serve as entry and exit points, as well as means for ejection of garbage and dead ants from the nest.

Carpenter ants dwell in and around forested areas and prefer the dead and rotting wood of logs, stumps or trees. Although carpenter ants play a very big role in the natural ecosystem, they are also a problematic because they also damage wood that has been used to build homes.

Carpenter ants may also enter indoor structures as they scavenge for food or water. Carpenter ants can cause damage to the houses and the buildings through their nesting. However, it is best to contact a pest control expert if you think a carpenter ant infestation within your home or building: when their nests are disturbed, carpenter ants bite in protection.

While carpenter ant bites are not a poisonous and do not carry disease, worker carpenter ants can insert formic acid into the skin, causing pain. They use this ability to fight other insects and Carpenter ant species when threatened. Most carpenter ant bites will feel like a pinch and do not want treatment unless the skin is broken. If this occurs, wash the areas with soap and water, then apply antibiotic ointment and cover the wounds with a bandage.

Carpenter ants are one of the biggest of all ant species. Carpenter ants have polymorphic workers, meaning that ants within a single colony may differ in size. Adult carpenter ants can gauge from 6 to 12 millimeters in length. Males, or winged swarmers, can measure up to 18 millimeters, while queens grow up to 20 millimeters, or one inch, in length.

An adult colony can contain three to four thousand adult ants. Like other ant species, carpenter ants are social insects, and their colonies are comprised of very different castes. A classic parent colony contains a queen, the queen’s brood, and workers, both minor and major. The size of worker carpenter ants determines their responsibilities. Minor workers are the smallest members of colony, and their tasks are to take care of the young and forage for food. Major workers are larger and serve as soldiers to defend against the predators.

In the United States, there are more than a dozen common species of ant. The Florida carpenter ant and the black carpenter ant are two of the main common species. While they may have similar physical characteristics, nesting habits, feeding and destructive behaviors, their colonies contain very different carpenter ant sizes. Mainly two factors affect the difference in size between species: the availability of food and the number of workers foraging for the food.

The Florida carpenter ant’s size varies from 3/16-inch to one inch. The Florida carpenter ant worker measures only 3/16 to 3/8-inch, while the queens are bigger, measuring over half an inch. Every colony of Florida carpenter ants contains over 3,000 workers.

The black carpenter ant’s size also depends on the caste. Worker ants may be as small as 1/4-inch, while queen ants can be bigger than 1/2-inch. In every species of carpenter ant, queens grow to be twice the size of worker ants.

The life cycle of carpenter ants begins with the nuptial flight, which generally occurs in the late spring or early summer, depending on environmental factors. During this mating flight, male winged ants, or swarmers, mate with winged females. Soon after this mating, the female sheds her wings and the males die.

The female carpenter ant then searches for a new site to build her colony. The queen classically seeks a small crack in a wooden structure. She then closes the crack to trap her self inside that chamber, and lays eggs for around 15 days. She remains inside the chamber until her initial batch of carpenter ant eggs become adult workers. During this time, the queen uses her stored fat reserves and wing muscles for sustenance.

The queen gives food for the young by means of her salivary glands until they become workers capable of foraging. The queen looks after her first brood, and once grown, that first brood of adult workers takes care of succeeding broods.

Three to six years are required to establish a big and stable colony. The life cycle of a carpenter ant is estimated to very last 60 days from egg to adult. The egg phase takes around 24 days, the larval phase 20 days and the pupal stage 21 days. Temperatures must remain between 70 to 90°F for good development. Cold weather can stretch the development time of carpenter ants up to 10 months.

The only role of the carpenter ant queen is to lay eggs, but quickly worker carpenter ants mature into adults, they take on the responsibilities of the colony. Carpenter ants forage for food, tend to the eggs, larvae and pupae, and excavate galleries in order to broaden and propagate their nest. When numerous generations of workers have matured, the functions are divided and two castes appear: main workers, who act as soldiers to guard the nest, and minor workers, who forage for food take care for the young.

When a colony contains more than 2,000 workers, the queen begins to make winged males and females, who will leave to begin other colonies of carpenter ants. A classic carpenter ant colony contains one queen, which produces about 200 to 450 winged carpenter ants that mate during spring.