Tapinoma sessile

Small ants live in many places. They can live in your house. They like to eat sweet food. They also like protein.

These ants are very tough. They can live in heat or cold. Some can live without food for a long time. They can even live with injuries.

These ants have a special smell. If you crush them, they smell like a coconut. This is why some call them coconut ants.

A colony can have many queens. One colony can even have many nests. This helps them find food more easily.

They use smells to find their way. They make trails to show others where food is. This helps the whole group stay fed.

The odorous house ant is a small ant. It can be brown or black. It is only about 1.5 to 3.2 mm long.

These ants have many names. Some call them sugar ants or stink ants. If you crush them, they smell like a coconut or blue cheese. This is why they are called coconut ants.

One colony can have many nests. This is called being polydomous. Having many nests helps them find food. They move workers and queens closer to the food. This saves them a lot of work. They also share food through trophallaxis. This is a way where ants pass food to each other.

These ants are very tough. They can live in heat or cold. Some queens can live without food for two months.

They like to eat sugar and protein. They often look for honeydew. This is a sweet liquid made by tiny insects called aphids. Ants guard these aphids to get the food. They may even move into your house to find sweets.

The odorous house ant is a tiny but very busy insect. You might know them by many names like sugar ant or stink ant. They are also called coconut ants because of a special smell. If you crush one, it releases a pungent odor. This scent can smell like a rotting coconut or even blue cheese. These small ants range in color from brown to black. They are quite small, measuring only 1.5 to 3.2 mm in length. Their bodies have a unique shape that helps scientists identify them. The gaster, which is the back part of the abdomen, sits right on top of the petiole. This makes the gaster point downward toward the ground.

These ants have a very interesting way of living together. They are eusocial, which means they share jobs and care for young together. Their colonies are polydomous, meaning one colony can have many different nests. This helps them find food in many places at once. They also use a method called dispersed central-place foraging. Instead of walking far to a main nest, they move workers and queens closer to the food. This saves the colony a lot of energy. They share food through a process called trophallaxis. This is when one ant passes food to another by regurgitating it. This helps spread nutrients throughout the whole group.

Scientists have learned a lot about these ants over many years. A man named Thomas Say gave them their scientific name in 1836. The name sessile means "sitting" to describe how their body parts fit together. Recently, a researcher named Marcello Ponzo studied how these ants grow. He watched a colony with seven queens and about 4,000 workers. Under the right conditions, the colony grew to have ten queens in just two months. This gave scientists strong evidence for cloning in these ants. It shows how they can create new queens to help the colony grow.

Odorous house ants are very tough survivors. They can handle both heat and cold quite well. Some queens can even live for two months without any food or water. Their life cycles follow a specific timing. After a queen lays eggs, they hatch in 11 to 26 days. The larvae then live for 13 to 29 days. The pupal stage lasts between 10 and 24 days. While workers live for a few months, queens live much longer. Males have a much shorter life, living only about one week.

You might see these ants in your own home. They love to find sweets like sugar and nectar. They also look for honeydew, which is a sweet liquid made by aphids. The ants will actually guard these tiny insects to keep the food coming. They are very good at finding food in different seasons. In the spring and summer, they spread out into many nests. In the winter, they return to just one nest to stay safe. Because they love sugar, they are often considered household pests.

The *Tapinoma sessile* is a small ant species with many common names. People often call them odorous house ants, sugar ants, stink ants, or coconut ants. They are found throughout North America, from southern Canada to northern Mexico. These ants are known for being highly adaptable to different environments. They can live in many habitats, including inside human homes. They are considered common household pests because they are drawn to sweets and water.

These ants belong to a group of insects called eusocial organisms. Eusociality means they have a reproductive division of labor. They also engage in cooperative care of their young. Multiple generations of ants live together at the same time. *T. sessile* colonies are also polydomous, meaning they consist of multiple nests. They are also polygynous, which means a single colony contains multiple reproducing queens. This structure allows the colony to grow and manage resources effectively.

The physical structure of *T. sessile* is unique among small, dark ants. Their bodies range in color from brown to black. They are quite small, measuring between 1.5 and 3.2 mm in length. The scientific name *sessile* comes from the word for "sitting." This refers to how the gaster sits directly on top of the petiole. The petiole is a small part of the abdomen. Because of this shape, the gaster points downward. This also means the anal pore opens toward the abdomen instead of away from it.

*T. sessile* uses a smart method called dispersed central-place foraging. In a polydomous colony, food sources might be far from the main nests. Instead of carrying food long distances, the ants move workers, queens, and brood closer to the food. This reduces the effort needed for transport. They also share food through trophallaxis. This is a process where one ant regurgitates food for another. Researchers have used proteins and enzymes to track how sucrose moves through this system. They found that while food spreads, workers often keep most of the sucrose.

The life cycle of the ant follows specific stages. Queens lay eggs that incubate for 11 to 26 days. After hatching, the larval stage lasts between 13 and 29 days. The pre-pupal and pupal stages last between 10 and 24 days. Lifespans vary greatly depending on the role of the ant. Queens live at least 8 months and likely much longer. Workers live for at least a few months. Males have the shortest lifespan, living only about one week.

Scientists have discovered that these ants may be able to clone themselves. Researcher Marcello Ponzo conducted a notable experiment to test this. He captured a colony of seven queens and about 3,000 to 4,000 workers. He kept them in a controlled environment with a nutritious diet. In almost two months, the number of queens grew from seven to ten. This provided strong evidence for the theory of cloning in this species. This ability helps the colony expand its reproductive power.

*T. sessile* is a very tough species that survives through many conditions. They are highly tolerant of both heat and cold. Some queens can survive without food or water for over two months. They also show high resilience to injury. Some workers continue working even when injured. In terms of competition, they are considered a subordinate species. They prefer using chemical secretions over biting or fighting. When they encounter dominant ants, they often leave the food to avoid conflict. However, they are excellent at exploiting resources quickly to survive.