Carpenter ants are the largest ants found in the region 1/4 to 3/8 of an inch. Often they are black or dark brown, although some species are lighter colored and may have a red thorax. The thorax is distinctly rounded, without indention and there is only one node between the abdomen and the thorax. The most distinct habitat for most carpenter ants is their nesting in wood. Galleries or excavated and the ants pile course saw dust near the nest openings. Often the sawdust is also mixed with insect fragments, unlike termites, carpenter ants do not eat wood and instead scavenge on dead insects, insect honeydew, and other materials.
Fire ants are reddish in color and about 1/4 of an inch long. They nest and mounds of 1 to 2 feet in diameter, and about 1 1/2 feet high; large colonies can have up to 250,000 workers. They are very active and aggressive and will sting any intruding animal repeatedly. They are known to eat meats, greases and sweet materials.
Odorous House Ant
Odorous house ants are dark reddish – brown to black, 1/8 of an inch long and have one node that is hidden by the abdomen. They have a unpleasant almost rotten coconut like odor when crushed. They nest in mulch beds, in soil under rocks, logs, debris and voids. They feed on honeydew in the wild and prefer sweet foods in homes.
Pavement ants are light brown to black, appendages lighter than the rest of the body, about 3/16 of an inch long, they have parallel grooves on the head and thorax. The Ants have two nodes between the abdomen in the thorax. They nest outdoors under rocks, under cracks in pavement and under slabs where they have easy access to moisture. They require proteins for reproduction but prefer sugars.
The Argentine ant is light to dark brown and 1/8 of an inch long. This ant's thorax is uneven and has one node. They nest in a variety of places in the outdoors they can nest under stones and logs on the indoors they can nest in wall voids and cracks in concrete. The colonies can have hundreds of queens and are extremely difficult to control. Diets include a wide variety of food, particularly sweets.
The Pharaoh ant is light yellow to red, with black markings on the abdomen and are approximately 1/16 of an inch long. They have two nodes between the abdomen and thorax. They require a warm protected area to nest. They can eat a wide variety of material ranging from sugars, greasy foods, proteins and dead insects.
Little Black Ants
You guessed it, this ant is very dark in color and small, approximately 1/16 of an inch. The ants have two nodes and nest in mulch beds, soil in shaded areas, under rocks, logs and voids. Their diet consist of honeydew, meats, greases and sweet foods when found indoors.
These ants range in color from yellow to brown, they are very small 1/32 to 1/16 of an inch. They have two nodes between their abdomen and thorax and the stinger may extend off of the abdomen. They nest under a variety of locations on the outside and may nest indoors in cracks and in cupboards. They feed on other species of young ants and insects; they also eat greases and high protein foods such as cheese.