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Worker. HW 1.95; HL 1.92; PW 1.28; FCW 0.47. Brown, antennae lighter, legs yellow. Major worker. No erect setae on mesosoma or under head; head sides convex, tapering forward; mesosoma dorsum in profile evenly convex, sharp at angle (blade-like in rear view); pronotum margined at front and sides; anterior clypeal margin median two thirds feebly projecting, straight, bounded by wide angles; frontal carinae narrow. Minor worker. Sparse erect setae on mesosoma and under head, none on scapes and tibiae; head sides straight, feebly tapering forward; vertex convex; frontal carinae narrow; mesosoma dorsum evenly convex; pronotum not margined; pronotum convex on top (rear view).