Ants

Argentine Ant
Iridomyrmex humilis
The Argentine Ant is a one node, small, shiny, brown ant with one size worker. Found throughout the southeastern U.S. and in Southern California and they nest outdoors under logs, concrete slabs, debris and mulch. They build large colonies and can move rapidly. In winter they move indoors. Feeds on sweet, fats, oils. May switch away from bait.
 

Big Headed Ant
Pheidole spp.
Big Headed Ant are light brown to dark reddish brown, and have two sizes of workers (one size have enormous heads...seed crackers). Found throughout the U.S. It is rare that bigheaded ants live indoors, preferring protected outdoor areas under logs, mulch, firewood, or patio blocks. Active forager, ant trails are common along sidewalks, foundations, and inside along baseboards and under carpets. Feeds on insects, protein, grease, sweets, seeds. There are several dozen species of this two node Big Headed Ant.

 


Carpenter Ant
Camponotus sp
Carpenter Ants have one node and come in many varieties with different sizes and colors - tan, red, black. Carpenters hollow out dead, moist wood in trees, firewood, and fence posts to build nests but they do not eat wood. Inside, they build colonies in wall voids, foam insulation, eaves, crawl spaces. Found throughout U.S., they feed on insects and insect secretions during the summer but often invade structures in spring and fall looking for other food sources. Forage at night during summer months. Likes sweets. May switch off a bait.

 

 
Cornfield Ant
Lasius alienus
The workers are brown to black in color. The cornfield ant is found throughout the United States. It is an occasional house pest in the northern states. It nests in lawns, between cracks in sidewalks, and under rocks. It enters homes in search of food typically an uninvited guest at picnics. Likes sweets.
 

Fire Ant
Solenopsis spp.
Fire Ants have different sizes of workers and two nodes. The red imported Fire Ant, the imported fire ant the mature Southern Fire Ant all have painful stings. All three species of Fire Ants are found in southern states. They usually build mounds outdoors in sunny areas, and the ants are very aggressive. People may be sensitive to Fire Ant venom. Colonies can grow to hundreds of thousands.
 

Ghost Ant
Tapinoma melanocephalum

Ghost Ants are hard to see because they are tiny and pale with one node. The front half is dark, the back half and legs are light. Significant pest in Florida and Hawaii. In northern states, it is sometimes found in greenhouses infesting plants shipped from Florida. Ghost Ants usually nest outdoors, but they build colonies behind base boards, in wall voids, in cabinets of buildings where they find food, feeding on dead insects, sweets and other food.

 

Little Black Ant
Monomorium minimum
Little Black Ants are very small and black, two nodes, with workers all one size, similar to Pharaoh Ant. Found throughout the U.S., but most often in the east. One of the more common house-infesting ants, Little Black Ants nest in wall voids and under carpets. May build outdoor colonies under rocks, logs, debris and forage to indoor food sources along baseboards and carpet edges. Likes sweets, fats, oils.
 

Large Yellow Ant
Acanthomyops intrejectus
The Large Yellow Ant has one node, also known as citronella ants because of their smell when crushed, is recognized by its yellow orange color. Common across the country, but most prevalent in the northeast and Midwest. As a soil nesting ant, it is usually found under logs, rocks, porches, patios, under concrete slabs and along building foundations. Occasionally swarm in crawl paces, not known to go to any baits. Workers forage underground and colonies are difficult to locate.
 

Pavement Ant
Tetramorium caespitum
Pavement Ants are all one small size, with two nodes, dark brown, with small stingers. Found in eastern U.S. (Florida to Canada) particularly in New England. Nesting along sidewalks and foundations of buildings, near firewood, stones, brick, mulch, etc., they forage in trails from outside colonies to indoor food sources, far from nests eating dead insects, greasy food, sweets, pet food. Can access structures many times via plumbing pipes and move to upper building floors. May throw soil out on top of concrete slabs when inside buildings and swarm in buildings.
 

Pharaoh Ant
Monomoruim pharaonis
The Pharaoh Ant is yellow with a reddish abdomen, two nodes and typically build nests in wood, wall voids, base boards, etc. Colonies quite large, many queens. Found throughout the U.S., most commonly in southern states. In northern states species will nest in heated buildings. Common hospital pest. Likes fats/oils. May switch away from bait.
 

Pyramid Ant
Dorymyrmex sp.
Pyramid Ants are one size with one node. There are two species; one is red and black; the other light brown. It is found most often in southern states. Pyramid Ants nest in soil and make simple mounds. They may forage indoors for sweets, fats, oils, but seldom build colonies inside...preferring lawns in direct sun. Gets along well with Fire Ants.
 
Small Honey Ant
Prenolepis imparis
The Small Honey Ant has one node, color varies from light to dark brown and can be found in eastern states, Canada and in the plains states. This ant is typically found in shaded areas - landscaping beds, under shrubs and will rest under slabs along expansion joints. This ant is very cold tolerant and is often the first and last ant species actively foraging. Likes sweets.
 

Thief Ant
Solonopsis molesta
Thief Ants are very small, two nodes, one size, light brown or yellow. They are found throughout the U.S. Thief ants nest near other ant colonies and steal food and larvae to feed their own colony. Outside they nest under rocks or logs; inside wall voids sand behind baseboards. Move in trails along baseboards, seeking greasy foods, rarely sweet.

 

 
 

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