Yellow crazy ant

Anoplolepis gracilipes

Yellow crazy ant (Anoplolepis gracilipes) is an insect pest. It is a native of Southwest Africa and was first detected in Northern Mariana Islands in 2009.

Anoplolepis gracilipes have invaded native ecosystems and caused environmental damage from Hawaii to the Seychelles and Zanzibar forming multi-queen supercolonies. They are also decimating the red land crab populations preying on, or interfering in, the reproduction of a variety of arthropods, reptiles, birds and mammals on the forest floor and canopy.

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