形态描述
Brownish-yellow. Head with dark brown face. Elytra unicolorous. Abdomen piceous-black. Supra-anal plate in ♂ broadly rounded behind, in ♀ broadly obtuse-angulate and moderately emarginate. Sungenital plate in ♂ bilobed, the left lobe being longer than the right, styles similar. Length of body ♂ 12.5-14， ♀ 12-13.5；pronotum ♂ 3.3-3.5, ♀ 3.2-3.4；elytra ♂ 15-16，♀ 11-14mm.