Tapinoma is a genus of small ants commonly known as "odorous house ants" due to the unpleasant smell they emit when crushed. These insects are found worldwide and are known for their ability to form large colonies. Tapinoma ants are typically brown or black in color and have a preference for sweet foods, making them common household pests. They are known for their ability to quickly infest homes and buildings, making them a nuisance to homeowners.