Closely allied to and strongly resembling A. abdominalis Rits., from Central Borneo (Notes Leyd. Mus. vol. XVIII, p. 26), but somewhat smaller, the punctuation somewhat stronger, the front margin of the clypeus slightly emarginate, the sides of the prothorax more narrowly edged, the pygidium provided with a more or less distinct longitudinal keel, the abdomen black 1). Length 8,5 —9,5 mm. — Oblongo-ovate; black, the palpi and antennae ferruginous; glabrous and glossy above, beneath the punctures bear small white scalelike setae.