Colour:—Head bright yellow shading to orange at apex of clypeus and on labium; eyes grey-black; a broad shining brownish-black percurrent stripe down middle of vertex, extending slightly round anterior margin of head to frons, and much broader anteriorly than posteriorly. Pronotum shining black with a trace of whitish pruinosity giving a bluish sheen; a narrow transverse yellow band along anterior margin behind each eye, extending outwardly to and along lateral margins, a pair of narrow arcuate whitish spots on anterior disc between eyes and almost meeting in middle line, an impressed whitish spot on each side beyond outer end of arcuate spot and fusing externally with the yellow lateral border, and a large obscure yellowish rounded spot in each of the basal lateral angles. Propleura yellow. Scutellum shining black, covered with whitish pruinosity over impressed region of disc, giving a bluish sheen. Meso- and meta-pleura yellow shading to dark brown towards acetabula, the meso- and meta-sterna dark brown. Tegmina semi-hyaline, sometimes powdered with white pruinosity, which gives them a bluish sheen; the suprabrachial area and the first, third and fourth apical areas slightly infumate, the remainder infuscate; the costal plaque dark brown, veins brown. Wings hyaline, somewhat infumate, the veins (except cross-vein between second and third longitudinal veins) brown. Legs pale yellow, the anterior tibiae and tarsi and the intermediate tarsi infuscate. Abdomen entirely black, with very fine white pruinosity giving a bluish sheen.