Near O. flavicornis, Lac, but smaller, the 8th and 9th joints of the antennae more strongly transverse, the fore-parts less closely punctured. Head extremely finely, sparingly punctured. Antennae with 3-jointed club, the 8th and 9th joints twice as broad as long, the 10th short, oval. Thorax twice as broad as long, very finely, moderately closely punctured. Elytra a little broader than and about half as long again as the thorax, very finely, moderately closely, asperately punctured. Abdomen strongly narrowed from base to apex, finely and moderately closely punctured on the anterior segments. The whole insect covered with a short, stiff black pulescence, the fore-parts with an extremely fine, more or less transverse ground sculpture.