Anoplolepis gracilipes, commonly known as the yellow crazy ant, is a highly invasive species known for its erratic movement patterns. These ants thrive in diverse habitats, from tropical rainforests to urban areas. They form supercolonies and have a significant impact on local ecosystems, often outcompeting native species.

Anoplolepis gracilipes, commonly known as the yellow crazy ant, is believed to be native to Southeast Asia. However, its precise native range is not well-documented due to its widespread distribution as an invasive species.

Anoplolepis gracilipes typically inhabits tropical and subtropical environments. It thrives in warm, humid climates and is often found in areas with high moisture levels, such as rainforests, mangroves, and agricultural lands. The species is highly adaptable, capable of living in a variety of habitats ranging from urban areas to natural landscapes.

In its ecological niche, Anoplolepis gracilipes is known for forming large, aggressive colonies that can displace native ant species and other small fauna. It forages both on the ground and in vegetation, preying on small invertebrates and tending to sap-sucking insects like aphids for honeydew. This behavior can lead to significant ecological impacts, including disruption of local ecosystems and declines in biodiversity.