What is the maximum reported density for yellow crazy ant supercolonies per hectare?

Exceeding 8 million individuals

The density achieved by established yellow crazy ant supercolonies can reach astonishing levels, reflecting their hyper-effective reproductive strategy facilitated by polygyny. In severe instances where these massive nests have merged across vast landscapes, the concentration of individuals in the form of a single, interconnected biological unit can surpass eight million ants packed into just one hectare of land. This extreme density contributes directly to their ability to dominate local resources, outcompete native fauna, and exert overwhelming ecological pressure on the invaded ecosystem, making containment exceptionally challenging as the threat is not localized to a few nests but spread across the entire occupied area.