Description.

Worker: From Mackay and Mackay (2010): The worker is a large (total length 16 mm) black ant. The mandible has approximately nine teeth; the anterior medial margin of the clypeus is concave. The length of the clypeus at the medial point (from the anterior edges of the frontal lobes) is long, approximately 0.4 mm. The eye is moderately large (0.6 mm) located one maximum diameter from the anterior margin of the head (side view). The scapes are moderately long, extending approximately the first funicular segment past the posterior lateral corner of the head. The sides of the head are convex, the posterior margin is concave. The pronotum is swollen at the shoulder, but does not form a carina. The promesonotal suture is well marked on the dorsum of the mesosoma; the metanotal suture is poorly marked and does not break the sculpture. The propodeal spiracle is slit-shaped. The petiole is rectangular-shaped when viewed in profile, with the anterior and posterior faces being nearly parallel and a well-developed horizontal face is present. The subpetiolar process consists of a small ventrally directed angle followed by a swollen region, which gradually diminishes in width posteriorly. The anterior face of the postpetiole is vertical and nearly forms a right angle with the dorsal face. The stridulatory file is absent on the second pretergite and the arolia are poorly developed.

Erect and suberect hairs are abundant on the mandibles, clypeus, dorsal and ventral surfaces of the head, posterior margin of the head, shaft of the scapes, erect hairs are generally absent on the sides of the head, except in the malar region, erect hairs are abundant on the dorsum of the mesosoma, on the petiole and all surfaces of the gaster, the hairs on the legs are erect to suberect.

The mandibles are finely striate and dull, the dorsum of the head is mostly punctate, but fine poorly defined striae are present near the posterior area of the frontal carinae, the mesosoma is punctate, but also has fine striae, which are mostly transverse on the dorsum of the pronotum, longitudinal on the mesonotum, longitudinal on the anterior ¼ part of the propodeum and transverse on the posterior ¾ part and mostly horizontal on the sides of the mesosoma, horizontal on the side of the petiolar node, but transverse across the dorsal face, all surfaces are dull.

Queen: 

From Mackay and Mackay (2010): The female (undescribed) is similar to the worker with a relatively elongate clypeus (length at the anterior medial point to the frontal lobes is approximately 0.4 mm), the eyes are moderate in size (maximum diameter 0.62 mm), the head length is 3.2 mm; head width is 3.0 mm. The pronotal shoulder is swollen, but does not form a carina. The propodeal spiracle is slit-shaped, the petiole and postpetiole are similar to those of the worker.

The pilosity and sculpture are similar to those of the worker.