Description. Cuezzo and Guerrero (2011) – Worker CI equal or over 90. Worker bicolored: head, mesosoma, and petiole, dark reddish; gaster black. Same pattern of color is found in queen. Posterior margin of the head slightly concave in frontal view. Dorsal face of pronotum with no erect setae. Mesonotal profile continuous with pronotum, with a distinct dorsal and declivitous face before mesopropodeal suture. Queen Head slightly wider than long with the posterior margin of head strongly concave. Maximum diameter the head behind of compound eyes.