Abstract:Rhynchaenus (Tachyerges) empopulifolis Chen,sp.nov. Black or blackish brown,rostrum and antennae and legs yellowish brown,dorsal surface thinly covered with long blackish and short yellowish brown hairs,scuttellum densely covered with white scales.Forehead between eyes linear.Rostrm short,2.0 (male) or 2.8(female) times as long as wide.Antennal insertion index 37 (male) or 35 (female),scape as long as club and as long as basal two segments of funicle combined,funicle with 7-segments.Pronotum and elytra without erect setae at sides.Hind femora thicker than the anterior ones,2.3 times as long as wide and simple. Length 2.3—2.7mm.breadth 1.3—1.5 mm. Holotype ♂,allatype♀,Liao Ning Province (Kalaqin Zuoyi Mengguzu Zi Zhi Xian) 7.Ⅵ.1986,colleted by Zhang Lian-xiang,Paratypes:56♂♂♀♀,7—10.Ⅵ.1986,the same locatity,by Zhang Lian-xiang,ChenYuan-chao and Chen Yuan-qing.19♂♀♀,Liao Ning (Heshan Xian),2.Ⅴ.1952;4♂♀♀,Beijing city,22.Ⅴ.1954,collected by Institute of Entomology.1♂2♀♀,Shanxi (Anze Xian),Ⅴ.1975,by Pang Zhen. This new species is elosed to R.(Tachyerges) subbifaciatus Faust.But differs from it by elytra without haired bands or marks,hind femora yellowish brown except the apex,scuttellum densely covered with white scale s.