Total length = 15.50-17.00 mm (mean = 15.71), width = 5.60-6.13 mm (mean = 5.81); HW = 2.75-2.95 mm (mean = 2.82), EYL = 1.00-1.15 mm (mean = 1.09), ratio Ant3/Ant1 = 1.73-1.93 (mean = 1.81), PL/PW = 0.78-0.85 (mean = 0.83), EL/EW = 1.62-1.79 (mean = 1.73), EL/ PL = 1.29-1.45 (mean = 1.36). Head and pronotum black with green or coppery metallic luster; elytra black; ventral surface black, with some slight metallic reflection; coxae almost black; mandibles dark brown; antennomeres 4-11, palpomere, trochanters, tibiae at both ends, and tarsomeres reddish or brown; antennomeres 1-3, femora and middle portions of tibiae yellow or yellowish-brown. Head rugose near eyes and occiput, vertex sparsely rugose; eyes prominent; antennomere 1 elongate-ovoid; labrum concave at apex, with distinct microsculpture; mentum tooth emarginate apically. Pronotum cordate, moderately convex; lateral margins bordered; disk almost smooth, sparsely rugose and setose near base and lateral margins; basal foveae moderately deep. Elytra widest at mid-length; humeral angle obtuse; striae deep, punctate; intervals moderately convex, intervals 1-5 almost glabrous medially, with a row of pubescence laterally, intervals more evenly pubescent near apex; intervals 6-9 pubescent throughout and with intervals 7-9 more densely pubescent than 6. Abdominal sterna bordered, densely pubescent laterally; sterna IV-VI sparsely pubescent medially; sternum VII rugose-pubescent, with apex narrowly rounded or subobtuse in males, more broadly rounded in female. Apical lamella of aedeagus moderately triangular, thick and bent ventrally.