Florida is home to over 22 species of ants. These ants are an important
Argentine Ants
Argentine ants (Linepithema humile) are small, typically measuring about 2.2 to 2.8 millimeters in length. They are light to dark brown and have a smooth, shiny appearance. Unlike many other ant species, Argentine ants do not have a stinger. These ants are highly adaptive and thrive in a variety of environments but are especially prevalent in urban and agricultural areas. They prefer moist habitats and often nest in soil, under logs, within mulch, or in buildings near water sources.
Argentine ants are omnivorous and have a strong preference for sweet substances, although they will also consume proteins and fats. They do not bite or sting but can become a significant nuisance due to their large colony sizes and aggressive nature, often displacing native ant species. The best control methods include eliminating food and water sources, sealing entry points into buildings, and using baiting systems specifically designed for ant control. An interesting fact about Argentine ants is their formation of “supercolonies,” where multiple colonies merge to form a massive, cooperative network spanning large areas, which contributes to their successful spread and dominance in new territories.
Acrobat Ants
Acrobat ants (Crematogaster spp.) are named for their unique ability to raise their heart-shaped abdomen over their thorax and head, especially when disturbed. These ants are small, typically ranging from 2.5 to 4 millimeters in length, and their color varies from light brown to black. Acrobat ants have a distinctive appearance due to their two-segmented waist and the flattened heart-shaped gaster (abdomen).
Acrobat ants prefer to nest in damp environments and are often found in decaying wood, under rocks, in trees, or within structures where moisture is prevalent, such as near plumbing leaks or in damaged wood. They are omnivorous, feeding on a variety of substances including sweets, proteins, and live or dead insects. Acrobat ants can bite and sometimes emit a foul-smelling odor as a defense mechanism, but they do not have a sting. The best control methods include reducing moisture in and around buildings, repairing structural damage, sealing entry points, and using baits and insecticides to target the nest. An interesting fact about acrobat ants is their ability to form mutualistic relationships with aphids and other hemipterans, protecting them in exchange for honeydew, a sugary substance excreted by these insects.
Florida Carpenter Ants
Florida carpenter ants (Camponotus floridanus) are relatively large ants, with workers ranging from 6 to 11 millimeters in length. They are characterized by their reddish-brown to black coloration, with the thorax often being lighter than the rest of the body. These ants have a robust and elongated appearance, typical of carpenter ants, with a rounded thorax and a single-segmented petiole connecting the thorax and abdomen.
Florida carpenter ants prefer to nest in moist, decayed wood, often found in tree stumps, fallen logs, or the wooden structures of buildings. Indoors, they may nest in wall voids, roof eaves, and other areas where moisture accumulates. They are omnivorous, feeding on a variety of food sources including sweets, proteins, and other insects. While they do not sting, Florida carpenter ants can bite and may spray formic acid into the bite, causing a mild burning sensation. Effective control methods include repairing structural wood damage, eliminating moisture sources, sealing entry points, and using bait and insecticide treatments specifically designed for carpenter ants. An interesting fact about Florida carpenter ants is their role in the ecosystem: they help decompose dead wood, which recycles nutrients back into the soil.
Ghost Ants
Ghost ants (Tapinoma melanocephalum) are tiny insects named for their pale, almost translucent legs and abdomen, which contrast with their darker head and thorax. These ants are very small, typically measuring just 1.3 to 1.5 millimeters in length. Ghost ants are notorious for their ability to form large colonies quickly and are often found in tropical and subtropical regions, though they can thrive in various environments, including greenhouses and indoor spaces in temperate climates.
Ghost ants prefer to nest in moist areas such as under rocks, in soil, within plant stems, or in household spaces like wall voids, potted plants, and behind baseboards. They feed on sweets, such as honeydew produced by aphids, and other insects. Ghost ants do not bite or sting, making them less of a direct threat to humans, but they can become a significant nuisance due to their rapid colony growth and indoor infestations. Effective control methods include maintaining good sanitation, eliminating moisture sources, sealing entry points, and using baiting systems to eradicate colonies. An interesting fact about ghost ants is their extraordinary ability to spread quickly; they can transport their nests from one location to another with remarkable speed, complicating control efforts.
Odorous House Ants
Odorous house ants (Tapinoma sessile) are small ants, measuring about 2.4 to 3.3 millimeters in length, with a color range from brown to black. They are named for the strong, rotten coconut-like odor they emit when crushed. These ants have a single-segmented petiole, which is hidden by their abdomen, giving them a smooth, uniform appearance. Their thorax is unevenly shaped when viewed from the side, distinguishing them from other ant species.
Odorous house ants are highly adaptable and can nest both indoors and outdoors. Outdoors, they typically nest under rocks, logs, mulch, and other debris, while indoors, they prefer wall voids, under carpets, and near sources of heat and moisture. They are omnivorous, with a particular preference for sweets, although they will also consume proteins and greases. Odorous house ants do not bite or sting, making them more of a nuisance than a direct threat. The best control methods include eliminating food and water sources, sealing entry points, and using baiting systems to target their colonies. An interesting fact about odorous house ants is their ability to rapidly relocate their nests when disturbed, which can make control efforts more challenging.
Pharaoh Ants
Pharaoh ants (Monomorium pharaonis) are small, measuring about 1.5 to 2 millimeters in length. They are light yellow to reddish-brown in color, with a darker abdomen. Their small size and pale coloration can make them difficult to detect. Pharaoh ants have a three-segmented club at the end of their antennae, which distinguishes them from other ant species.
Pharaoh ants are highly adaptable and can nest in various environments, but they particularly thrive in warm, humid indoor spaces. Common nesting sites include wall voids, behind baseboards, under floors, and in electrical outlets. They are omnivorous, with a preference for sweets, proteins, and fats. Pharaoh ants do not sting, but they can bite, although their bites are not harmful to humans. Effective control methods include using baits specifically designed for pharaoh ants, as they are resistant to many conventional insecticides. Ensuring good sanitation and sealing entry points can also help prevent infestations. An interesting fact about pharaoh ants is their ability to form multiple interconnected colonies, known as “budding,” which allows them to spread quickly and makes eradication challenging.
White Footed Ants
White-footed ants (Technomyrmex difficilis) are medium-sized ants, typically measuring about 2.5 to 3 millimeters in length. They are dark brown to black in color, with distinctive pale or yellowish-white tarsi (feet), which give them their common name. These ants have a slender body and a one-segmented petiole, and they do not possess a sting.
White-footed ants prefer to nest in moist environments and are commonly found in both urban and natural settings. Outdoors, they nest in soil, leaf litter, and under rocks, while indoors, they often inhabit wall voids, attics, and near moisture sources such as kitchens and bathrooms. They are primarily attracted to sweet substances and honeydew from aphids but will also consume proteins. White-footed ants do not bite or sting, making them less of a physical threat but a significant nuisance due to their large colony sizes and tendency to invade homes. The best control methods include maintaining good sanitation, eliminating moisture sources, sealing entry points, and using baiting systems to target their colonies. An interesting fact about white-footed ants is their ability to form expansive supercolonies, where multiple nests cooperate, allowing them to dominate large areas and making control efforts more challenging.