Their common name is descriptive of this ant’s habit of raising the abdomen at a 90 degree angle, especially when disturbed. They have a red head and thorax and a black abdomen. Workers are 1/16 to 1/8” long; queens range up to 3/8” long. They feed on honeydew from aphids; they also feed on live and dead insects. Indoors they show a slight preference for sweets and high-protein foods such as meats. They typically nest in wood which has been subjected to high moisture and fungal decay; they will also nest in Styrofoam insulation panels and wall voids. They are only a nuisance and do not damage wood. Inspection is the key to successful control. Treatments include liquid, dusts and/or baiting techniques.
These ants get their common name from their habit of hollowing out galleries in pieces of wood for nesting purposes. This nesting habit can result in structural damage. Workers are 1/8-1/2” long but vary greatly in size and have a red head and thorax and a black abdomen; queens are 1/2 to 5/8” long. They do not sting but their bites can be quite painful. Most species first establish their nests in decayed wood and later expand or enlarge into sound wood. The only external indication of infestation other than the presence of workers and/or Swarmers is the appearance of small openings on the surface of the wood. Through these, the workers expel debris which consists of sawdust-like shavings and/or fragments of insulation and insect body parts, this is called frass. Treatments include liquid, dusts and/or baiting techniques.
This ant’s name comes from the worker’s habit of running haphazardly about a room/building in search of food. Workers are 1/16 to 1/8”long and are black in color. Their preferred foods are insects and sweets, but will feed on almost any household food. Inside, these ants usually nest underneath floors and in wall voids. Outside, the nests are shallow and usually located in soil under objects or in cavities in plants and trees. Treatments include a combination of liquid and baiting techniques.
These ants get their common name from their ability to inflict especially painful bites and stings. Workers are about 1/16 to1/4” long; queens average 1/4" long with a head and thorax yellowish red and a black abdomen. They prefer foods high in protein but will feed on almost anything. These ants are typically ground-nesting ants. They are attracted to electrical junction boxes, air conditioners, etc. When they mass around the electrical contact points, they cause the equipment to malfunction. They will also nest in gas and water meter boxes and then follow the pipes into the building. Treatments include liquid and/or baiting techniques.
Its name resulted from the mistaken belief of Linnaeus that this ant was one of the plagues of Egypt in the time of the Pharaohs, also called sugar ants. Workers are about 1/16” long and color varies from yellowish to reddish, with an often darker abdomen. They have a wide preference in foods ranging from syrups to fruits, pies, meats and dead insects. Inside they nest in warm, humid areas near sources of food and/or water. Nests are usually located in inaccessible areas such as wall voids, behind baseboards, in furniture and under floors. Treatments include baiting primarily but liquids can also be helpful.
These ants are tiny and black to the human eye. They are about 1/16” long and prefer sweet foods. Inside they nest anywhere there is food and moisture. Liquid insecticide treatments do not seem to work on this ant, therefore treatment is limited to baiting for the best results. Control of Rover Ants can be difficult.