Large colonies of Red Imported Fire Ants can produce an anthill 10-30 cm above the ground.This anthill distinguishes nests of the Red Imported Fire Ants from other ant species in Taiwan.

• 而成熟蚁巢会形成高于地面10-30公分的蚁丘，此与国内其他种类的蚂蚁的蚁巢有显著的不同，故可藉此快速辨认。