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Extant: 1 valid subspecies
Worker. HW 1.25 - 2.25; HL 1.3 - 2.5; PW 1.15 - 1.5. Black, legs lighter; matte, finely punctate;> 30 erect setae on mesosoma, few under head, raised to 40° on scapes and tibiae, distinct; pronotum margined front and sides; node summit sharp. Major worker. Head sides mostly straight, parallel; vertex straight; anterior clypeal margin projecting, widely indented in middle. Minor worker. Head sides convex tapering forward; vertex, slightly convex; anterior clypeal margin projecting, convex in middle.