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Extant: 6 valid species
Worker monomorphic; head in full-face view oval, with posterior margin slightly concave medially; frontal lobe in full-face view partly concealing torulus; frontal carina and antennal scrobe absent; median portion of clypeus with anterior margin roundly convex bearing a row of stout setae but lacking an isolated median seta; posteromedian portion of clypeus relatively broadly inserted between frontal lobes; mandible triangular; masticatory margin with 5 sharp teeth which decrease in size from apex to base; antennae 12-segmented, with conspicuous 3- segmented club; eye well developed; vertex with a broad depressed area between eyes; promesonotum highly raised, with a long posterior slope; promesonotal suture vestigial dorsally; metanotal groove conspicuous; propodeum unarmed; propodeal spiracle elliptical, opening posterolaterad; propodeal lobe very small and low, round; petiole pedunculate, with relatively high node; postpetiole much higher than long, relatively strongly swollen dorsad.
Vietnamese species. Only one species has been found from Vietnam: sp. eg-1 (Chua Yen Tu).
Bionomics. Foragers swarming around a dead cicada were found on the ground within a bamboo forest (720- 845 m alt.).