Eupolyphaga udenostyla Qiu, sp. nov. A male holotype, dorsal view B male holotype, ventral view C female paratype, dorsal view D female paratype, ventral view E male head, ventral view F tegmen, ventral view G hind wing, ventral view H supra-anal plate, ventral view I subgenital plate, ventral view J left portion of subgenital plate, dorsal view K genitalia, dorsal view L right phallomere, right-ventral view. Scale bars: 1.0 cm (A–D); 0.2 cm E; 0.5 cm (F, G); 0.1 cm (H, I, K, L); 0.02 cm (J). Black arrows indicate the strongly reduced anal field and absence of styli.