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Worker. HW 1.00 - 2.10; HL 1.30 - 2.20; PW 0.80 - 1.30. Mostly black, legs, antennae yellowish; glossy; sparse long erect setae scattered on mesosoma, two or three under head, flat-lying on scapes and tibiae; anterior clypeal margin median section projecting, straight, bounded by angles. Major worker. Propodeal angle about 150°; node summit sharp; head sides convex, widest at eye level; vertex mostly straight. Minor worker. Propodeal dorsum and declivity uniformly convex lacking a distinct angle; head sides straight, nearly parallel, feebly tapering forward; vertex, median third nearly flat, corners widely rounded; eyes large and bulbous; node summit blunt; finely punctate, each punctation reflecting light.