Cutter Ant

Description:

I was walking and saw this ant upside down on a stick in a plant. Probably (I guess) the stick falls of a tree and the ant just stay in there.

Habitat:

I found this specimen on a region of Cerrado, near a waterfall inside the area of the "Parque Nacional Serra da Canastra" ("Canastra National Park"), an environmental reserve of Cerrado.

Notes:

Known popularly as "Saúva" (BR) (the genus Atta) or "Quenquéns" (BR) (those of the genus Acromyrmex), the "Cutter Ant" are so called due to the habit of cutting green parts of plants and bring them into the nests, where they serve as substrates for the cultivation of a fungus, which these insects feed. I'm in doubt between "Acromyrmex diasi" or "Atta robust".