Amazing Facts About Black Ants

Dec 12, 2025 0

The black garden ant (Lasius niger), also known as the common black ant, is a formicine ant, the type species of the genus Lasius, which is found across Europe and in some parts of North America, South America, Asia, and Australasia.

The European species was split into two species; L. niger, which are found in open areas; and L.

Colony Size and Lifespan

Lasius niger colonies normally range from 4,000 to 7,000 workers, but can reach 40,000 in rare cases. A Lasius niger queen can live for up to 29 years, the longest recorded lifespan for any eusocial insect.

Queen Ant Characteristics

Lasius niger queens in the early stages of founding can have two to three other queens in the nest. They will tolerate each other until the first workers come, then it is most likely they will fight until one queen remains. The queen can reach 6-9mm in length and is smaller as a new queen, about 9 mm long, glossy black color but appears to have slight brown stripes on her abdomen.

Worker Ant Characteristics

Workers are 3-5 mm long and dark glossy black.

Male Ant Characteristics

Males are 3.5-4.5 mm long, slim, and black. Only produced by queens when the nuptial flights are approaching. They appear with a dark glossy body with a different shape from the workers, almost resembling a wasp in appearance. They have wing muscles which stand out from the rest of the body.

Mating Habits

Ants mate on the wing, so "flying ants" are alates (reproductive individuals), which include males and gynes (virgin queens). The mating (or nuptial) flights of Lasius niger usually occur around June to September throughout the species' range; in North America flights usually occur during the autumn, whereas in Europe they generally take place during the hot summer months of July and August. Disparities between local weather conditions can cause nuptial flights to be out of phase amongst widespread populations of L. niger.

Starting a New Colony

Once the queens have mated they will land and discard their wings and begin to find a suitable place to dig a tunnel. After removing her wings, a queen will move quickly to find moist ground, then start digging a tunnel. Once the tunnel has been completed, the queen will block the entrance and retreat to the bottom. Subsequently, she will dig out a small chamber. This will serve as the claustral chamber of the new colony.

Generally, a queen will begin to lay eggs immediately after the construction of the chamber, and the eggs will develop to imagines in 8-10 weeks. Until the eggs hatch and the larvae grow to maturity, a Lasius niger queen will not eat, relying on the protein of her wing muscles to be broken down and digested.

Development Stages

Lasius niger, like other ants, have four stages of development: egg, larva, pupa, and adult. Lasius niger lay tiny, white, kidney-shaped eggs with a smooth sticky surface which helps them to be carried in a group instead of one by one. After hatching Lasius niger proceed onto the larva stage resembling tiny maggots. The larvae need to be fed by the queen (or workers in the case of an established colony) if they are to mature; as they feed the larvae grow, shedding their skin, doing so usually three times in total. With each molt, the larvae grow hooked hairs which allow them to be carried in groups.

When Lasius niger larvae reach the last molt they are generally too big to be carried as part of a group and so are carried individually. Once the larva grows big enough it spins a cocoon around itself. To aid this process a queen (or workers) may bury the larva so that it can spin its cocoon undisturbed and begin a process of metamorphosis. Once the process is complete the Lasius niger worker emerges from the cocoon.

The first worker ants that emerge are very small compared to later generations. At this point, the workers immediately begin to expand the nest and care for the queen and brood; they eventually remove the seal from the entrance to the nest and begin to forage above ground. This is a critical time for the colony as they need to gather food quickly to support future growth and particularly to feed the starved queen, who would have lost around 50% of her body weight.

From this point on the queen's egg-laying output will increase significantly, becoming the queen's sole function. The later generations of worker ants will be bigger, stronger, and more aggressive because there is more nutrition for them at the larval stage. The initial brood being fed only by the scarce resources available to a queen will be much smaller than brood supported by a team of foraging and nursing workers.

Provided workers are able to find food, at this stage the colony will see an exponential rise in population. After several years, once the colony is well established, the queen will lay eggs that will become queens and males. Although worker ants live for a couple of months.

Lifespan of Queen Ants

Queens typically survive for almost 15 years, but there have been instances of queens living up to 29 years, the longest recorded lifespan for any eusocial insect. Understanding the basis for the greater longevity of queens has a bearing on the general unsolved problem in biology of the causes of aging.

The Insane Biology of: Ant Colonies

Mutualistic Relationships

The Plebejus argus butterfly lays eggs near nests of L. niger, forming a mutualistic relationship. This mutualistic relationship benefits the adult butterfly by reducing the need for parental investment. Once the eggs hatch, the ants chaperone the larvae, averting the attacks of predatory organisms like wasps and spiders as well as parasites.

Other ant species

Homeowners can encounter many ant types, but identifying them can be tricky. Knowing what types of ants are around your home is important because different ant species have different behaviors, nesting habits, and potential threats. Terminix’s trained technicians know how to identify the ants you’re seeing and can provide customized ant control solutions to help remove the ants from your property.

Here's a quick guide to some common ant species:

Acrobat ant

Appearance: Acrobat ants range in color from light red to brown or black. Their size varies from ⅛ of an inch to ¼ of an inch in length. One identifying factor is their heart-shaped abdomen.
Lifecycle: Ant lifespans vary amongst ant types, but on average, a worker acrobat ant can live for several months to a few years, while queens can live for several years.
Habitat: Acrobat ants prefer to live in moist or decaying wood. They can typically be found in tree holes, dead limbs, stumps, and logs. These types of ants also nest in rotting areas of fences, decks, and railings. While outdoor nests are common, they’ll also nest inside if moisture or decay exists indoors.

Argentine ant

Appearance: Argentine ants typically have a shiny appearance and vary in color from dark brown to black. They’re about ⅛ of an inch in length.
Lifecycle: Like many other ant species, their lifespan depends on various factors. Worker Argentine ants tend to live for a few months to a year, while queens can live for several years.
Habitat: These kinds of ants typically nest outdoors in shallow soil beneath stones or debris, while subcolonies can be found in various locations such as lumber piles, landscape mulch, and wall voids. They are prevalent invaders of homes in Southern California and are commonly found in homes across most Gulf Coast states.

Army ant

Appearance: Army ants range in color from reddish-brown to dark brown or black. They have relatively large heads, which often bear conspicuous mandibles for capturing prey and defending their colony. These types of ants are generally small, measuring around 0.1” to 0.6” in length.
Lifecycle: An army ant queen and her colony can survive for an incredibly long time, up to twenty years, with the right conditions. Workers survive for around a year; males die after mating with the queen.
Habitat: This ant species inhabits tropical and subtropical regions globally, including Central and South America, Africa, and parts of Asia. They nest in trees or create temporary nests called bivouacs, forming protective walls using claws and mandibles around their queen and larvae. These nests are temporary and are dismantled when the ants relocate.

Carpenter ant

Appearance: Carpenter ants are typically large, ranging from ¼” to ½ “long. These ants have a dark-colored body, usually black or reddish-brown, and a segmented waist.
Lifecycle: Worker carpenter ants can live for several months to a few years, while queens can live for several years, with some living up to a decade or more.
Habitat: Carpenter ants primarily inhabit wooded areas but are common in urban and suburban environments. These kinds of ants nest in moist or decaying wood, such as tree stumps, logs, or wooden structures like decks and fences. This ant species is found throughout North America, particularly in temperate regions, but they can also be found in other parts of the world.

Citronella ant

Appearance: Citronella ants are typically small, measuring around 0.12” to ¼” long. They have a distinctive yellow to yellowish-brown coloration.
Lifecycle: Worker citronella ants can live for several weeks to a few months, while queens can live for several years.
Habitat: Citronella ants are commonly found in North America, particularly in the eastern and central regions. This ant species typically nests outdoors in soil, especially in areas with high moisture levels, such as under stones, logs, or debris.

Fire ant

Appearance: Fire ants generally measure around ⅛” to ¼” in length. These types of ants have a reddish-brown to black coloration with a darker abdomen. Fire ants are known for their aggressive behavior and painful stings.
Lifecycle: Worker fire ants typically live four to six weeks, and queens can live between two and six years.
Habitat: Fire ants are commonly found in warm climates, particularly in the southeastern United States, including Texas, Florida, and Georgia. This ant species lives in various habitats, including lawns, fields, and areas with mounds of loose soil.

Little Black ant

Appearance: Little black ants are about ⅛ of an inch long.
Lifecycle: Male ants die after mating with the females and live for only a few days. Workers tend to live for a few weeks to several months, and queens can live for multiple years.
Habitat: Little black ants are commonly found around homes, following defined trails between nests and food sources. Infestations indoors occur as they forage for food, occasionally establishing colonies inside walls or beneath carpets. This ant type also thrives in moist environments.

Moisture ant

Appearance: Moisture ants are generally about ⅛” long and are yellow to dark brown.
Lifecycle: This ant species can have colonies with thousands of ants that can survive over 20 years. Because of their long lifespan, moisture ants can threaten the structures they nest in.
Habitat: These ants prefer damp environments and make nests in water-damaged and decaying wood. Homeowners may notice soil accumulating in basement floors or through cracks in walls, often indicating a moisture ant infestation. They tend to carry soil into the building they’re nesting in, which they use to construct a carton nest.

Pavement ant

Appearance: Pavement ants are brown and around ⅛ of an inch long.
Lifecycle: Worker pavement ants can live for about five years, while queen pavement ants can live for five or more years.
Habitat: The name "pavement ant" originates from its inclination to nest in the soil adjacent to slabs, sidewalks, and driveways, often resulting in visible piles of displaced soil. Indoors, these types of ants nest beneath foundations and within hollow block walls, sometimes carrying soil up into walls for nesting. Soil appearing under baseboards or on basement floors may indicate pavement ant presence.

Pharaoh ant

Appearance: Pharaoh ants are a small, yellow ant species that measure around ⅛ of an inch long.
Lifecycle: This ant type has a relatively short lifespan. Queens live for about a year, and workers tend to live around 70 days.
Habitat: Pharaoh ants nest opportunistically in various locations, including walls, furniture, appliances, between sheets in closets, curtain rods, inside irons, small boxes, and under roofing shingles.

Sugar ant

Appearance: Sugar ants, also known as banded sugar ants, are typically between ¼” and ½” long. Their bodies are a brown-orange color, and they have large black heads.
Lifecycle: Worker sugar ants can survive up to seven years, and queens can survive up to fifteen.
Habitat: This ant species prefers to nest outdoors beneath rocks or soil, in hollow wood, and on tree branches or shrubs. They are primarily found in Australia.

Texas leaf cutter ant

Appearance: Leaf cutter ants range in various sizes but, on average, are between ⅛ of an inch to ⅝ of an inch long. They’re a reddish-brown color.
Lifecycle: These types of ants can live for 10-15 years as long as the queen ant is alive.
Habitat: The Texas leaf cutter ant constructs large nests in soil, often reaching sizes of 1,000 square feet and housing over one million ants. Their nests are crater-shaped mounds that can extend 15 feet underground. This ant species is typically found in south-central Texas, extending into East Texas and Louisiana.

Twig ant

Appearance: Twig ants, also called the elongated twig ant and Mexican twig ant, are about 5/16 to ⅖” long. The color of this ant type depends upon where they live, but in general, this ant species is dark brown-black or orange-brown. They tend to have prominent, large, oval-shaped eyes and long bodies that resemble wasps.
Habitat: Twig ants have migrated from Mexico to the southern United States, although they're not commonly found here. Their nests usually consist of a single queen and a small entrance hole, often in twigs or plant cavities. Encounters with humans may result in painful stings, especially when disturbed in thick bushes.

Tips to Reduce Ant Infestation

Seal the cracks on the wall and floor in your home.
Trim the branches and shrubs that touch the surrounding of your home which usually serve as a bridge for the ants to get into homes.
Inspect the presence of ants if there are any potted plants in the house.

There are several chemical controls used in controlling ants such as surface sprays, space sprays, dusts, and baits. Read carefully and follow the instructions on the label before applying any chemical treatment.

It is advisable to consult pest control professionals if you found any ant infestations in your home.