Fire Ant (Solenopsis invicta): Native to South America, red imported fire ants spread globally through shipping. In the southern U.S., they build large mounds and deliver painful stings that can cause allergic reactions or even death. They attack crops, electrical equipment, and native species, disrupting ecosystems and agriculture. Their colonies can contain hundreds of thousands of workers and multiple queens, enabling rapid expansion. They outcompete native ants and prey on ground-nesting animals, including reptile eggs. Control involves baiting and insecticides, but reinvasion is common. Fire ants cost billions annually in medical treatments, property damage, and control efforts. Their aggressive nature and adaptability make them one of the most problematic invasive insects worldwide.
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