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Leafcutter ants in Brazil are called leafcutter ants, especially the queens of the genus Atta, insects from the ant family. It currently has around two hundred species, all native to the New World and most abundant in the Neotropical Region. They are also called, among other names, saúba, leaf-cutter ant, loader ant, cassava ant, big-headed ant, field ant, roceira, big-headed, Caçapó, maniuara,[2] caiapó, loader, leaf-cutter ant, caiapo ant, country ant, knot ant, leaf ant, farm ant, manhuara, tanajura, picadeira and tobacco ant. In Brazil, leafhoppers are one of the most important agricultural pests, being so abundant and active in crops that the first colonizers called them "the true King of Brazil".These leaf-cutter ants cut pieces of leaves, which they carry to their anthills to create a fungus that constitutes their exclusive food. The leaves and other parts of plants (both mono and dicotyledonous) cut by the leafhoppers, after being taken into the anthill, serve as substrate for the cultivation of a mutualistic fungus on which the ants feed. The exact identity of this fungus varies according to the species involved, with the following species listed: Leucoagaricus gongylophorus, Attamyces bromatificus, Pholota gongylophora (Moeller).