First up we have the Argentine ant. Argentine ants are small, typically ranging from 1.6 to 2.8 millimeters in length. They have a uniform light to dark brown color. Argentine ants have 12-segmented antennae with a distinctive two-segmented club at the end. Their body is slender and segmented, with a distinctive-segmented waist. Argentine ants have relatively large eyes compared to their head size. These ants exhibit cooperative behavior and form supercolonies. An example of this behavior is the formation of visible trails when foraging for food. When crushed, Argentine ants emit a musty odor, which can be helpful in identification.
Next up we have the red imported fire ant. Red imported fire ants vary in size with worker ants ranging from 1.6 to 6.4 millimeters. The ants have a reddish-brown to dark color, and their bodies may appear darker towards the rear. The worker ants have two noticeable nodes or bumps between the thorax and abdomen. Red imported fire ants have 10-segmented antennae with a two-segmented club at the end. These ants are equipped with a noticeable stinger at the tip of their abdomen. Red imported fire ants are known for their aggressive behavior and may sting when threatened causing a burning sensation. Their mounds are dome-shaped with no visible entrance hole.
Lastly, we have the ghost ant. Ghost ants are very small, typically ranging from 1.3 to 1.5 millimeters in length. They have a pale, almost translucent appearance with a dark head and thorax. Ghost ants have 12-segmented antennae with two-segmented club at the end. Their legs and thorax are also pale in color, while the abdomen is usually darker. Ghost ants have a single, noticable waist between the thorax and abdomen. They are attracted to sweet substances, infesting areas where sugary foods are present and forming trails while foraging for food. Ghost ants are commonly found indoors, making their way into kitchens and bathrooms.