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Worker. HW 0.9 - 1.6; HL 1.0 - 1.7; PW 0.65 - 1.2. Black to brown; glossy; anterior head often red; metanotum with spiracles above dorsum; propodeum hemispherically domed; erect setae confined to gaster and front of head; node summit rounded; dimorphic. Major worker. Head sides straight, feebly tapering forward; anterior head striate, truncate; clypeus tapering to narrow convex anterior margin. Minor worker. Head sides straight, tapering forward; vertex flattish; clypeus wide, anterior margin convex, projecting; anterior head finely punctate.
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