Description. Male face black with yellow markings, labrum with a pair of yellow spots, frons with a broad stripe, occipital margin highly raised. Thorax black, dorsal stripes and collar stripes not connecting, antehumeral stripes long, second and third lateral stripes complete. Abdomen black, S1-S8 with yellow markings, S7 with a big yellow spot, lateral lower eage of S8 with shorleaf-like flaps, S9 elongated. Female similar to male.