Giant Red Bull Ant

They are one of the largest in ants species. This one was around 25mm long. They have long, straight and powerful jaws and a potent sting.
Red Bull Ants have a reddish-brown head and thorax. The back half of the abdomen is black. Their log jaws are brownish-yellow.

Giant Red Bull Ants build nest underground with extensive tunnel systems. The nest entry is usually covered with dry plant materials and dirt. The dirt is loosely scattered around the nest mound. Two or three bull ant guards can often be seen in the immediate opening area, keeping a sharp eye out for any possible intruders.