Formicidae sp. (unidentified)
A small, fast-moving ant of the Lowland Meadow, foraging erratically across open ground and through leaf litter for insects, food scraps, and organic matter; crazy ants are named for their rapid, non-directional running and are among the most widespread introduced ant groups in South Florida.
A small, fast-moving ant of the Lowland Meadow, foraging erratically across open ground and through leaf litter for insects, food scraps, and organic matter; crazy ants are named for their rapid, non-directional running and are among the most widespread introduced ant groups in South Florida. No dedicated observation record has been found in the miniBIOTA observation records.
Crazy ants (tribe Lasiini, primarily genera Paratrechina and Nylanderia) are small, fast-moving ants recognized by their characteristically erratic, non-directional foraging runs that give the group its common name. Paratrechina longicornis (longhorn crazy ant) is the species most commonly referred to in North America by the name "longhorn crazy ant"; it has notably long antennae and legs relative to body size. P. longicornis is a widely introduced tramp ant, now established in tropical and subtropical regions globally through the movement of soil, plants, and cargo.
In Florida, P. longicornis and related crazy ant species are common in disturbed habitats, gardens, landscaped areas, and the edges of moist meadows and grasslands. Crazy ants are omnivores, foraging for seeds, small insects and invertebrates, food scraps, plant sap, honeydew from sap-sucking insects (aphids, scale insects, mealybugs), nectar, and carrion. When honeydew-producing insects are present on vegetation, crazy ants form trophobiotic relationships, tending and protecting the insects in exchange for honeydew.
Because the identification of this node as Paratrechina longicornis was specifically flagged as uncertain, the full range of species-specific biological detail cannot be applied here. The observations motivating the "longhorn crazy ant" common name and the initial P. longicornis identification (long antennae, erratic runs, ant colony in the Lowland Meadow) suggest this is in the crazy ant group, but species-level confirmation requires morphological examination.
The electric ant (Wasmannia auropunctata) noted as "misidentified" in alternate_names is a distinct fire-ant-like invasive ant with a painful sting; it is unrelated to crazy ants and the confusion likely arose from the "ant" and "invasive" overlap in South Florida.
In the Lowland Meadow, Longhorn Crazy Ant functions as an opportunistic omnivore, foraging across the ground layer for seeds, invertebrates, and organic matter. Ant colonies redistribute nutrients through foraging and waste deposition. If aphids or scale insects are present in Lowland Meadow vegetation, trophobiosis may occur. Crazy ants can have significant effects on local invertebrate communities by outcompeting or displacing other ground-level predators and scavengers.
Introduction context: No introduction event is recorded. No introduction date, source, or method is on file.
No dedicated observation records have been found for Longhorn Crazy Ant in the miniBIOTA observation records. The species is assigned to the Lowland Meadow biome. No introduction date, source, or method is on file. Whether Longhorn Crazy Ant is currently present in the Lowland Meadow is unresolved.
Omnivore. Forages opportunistically for food across the Lowland Meadow ground layer, including seeds, small invertebrates, food scraps, and organic debris. Crazy ants also tend aphids and scale insects for honeydew; if such insects are present in the Lowland Meadow vegetation, trophobiosis may occur. No specific feeding observation on Longhorn Crazy Ant has been recorded in miniBIOTA.
If confirmed as Paratrechina longicornis, this species is one of the most widely introduced ants globally and is highly heat-tolerant, active year-round in South Florida subtropical conditions, and well-established in disturbed habitats. Specific tolerances depend on species identity. Crazy ants as a group are associated with warm, disturbed, and human-modified habitats.
Ant colonies reproduce sexually through winged queens and males that participate in mating flights; fertilized queens found new colonies. Colonies may also spread by budding, where a mated queen leaves the parent colony with a group of workers. Workers are sterile females. If the species is Paratrechina longicornis, colonies can be large (tens of thousands of workers) with multiple queens. Multiple generations of workers per year under South Florida subtropical conditions.
Follow this species across the habitats where it currently appears in the miniBIOTA biosphere.
