描述Head much deeper than broad, the depth of the face from the fastigium to the base of the jows slightly less than the facial breadth. Eye small, circular and subglobular. Mandibles powerful; labrum circular in outline. Antennae about twice the length of the body. Pronotum flat, ampliate behind, the lateral margins strongly divergent caudad of the narrowed anterior third with the posterior half of the metazona with a slight median tectate ridge. Lateral lobes of the pronotum deepest at their middle; fore margin very slightly concave, posterior margin strongly oblique with a slight central concavity, the ventral margin aslant caudad to the posterior angle which is the deepest portions of the lateral lobes. Tegmina, the largest in the Asiatic species, and considerably broader than in A. palpalis. The median vein forming the lateral margin of the tegmina is slightly convex and heavily rein-forced; the dorsal and lateral planes flat and at right angles to each other; the lateral plane deepest in he apical fourth where it exceeds the breadth of the dorsal plane.