Abstract: In the present paper, a new ant of the genus Gnarnptogenys is described.Gnarnptogenys sinensis n. sp. (figs. 1—3)Worker: TL 6.9mm; HL 1.57mm;HW 1.52mm;CI 96; head length with mandibles 1.97mm; scape length 1.59mm;greatest diameter of eye 0.16mm; petiole length 0.50mm.Head almost perfectly straight and parallel sides and the rather sharp occipital angles; the occipital border distinctly concave; antennal scapes a little beyond the occipital angles; antennal funiculus stout, segments 4—10 as long as broad, the remains longer, without a club; clypeus with a very distinct sulcate in the middle; mandibles indistinctly denticulate. Thorax seen from side round dorsal surface,with the promeso and mesoepinotal sutures distinctly, but not emarginate; the humeri of the pronotum with stout, prominent and obtuse angle, forming a pair of teeth. Coxal tooth subeonieal, with a broad base; middle and hind tibiae each with a single slender pectinate spur; all tarsal claws with a single extra subb asal tooth. Petiolar node parallel at the sides and posterior border, slope down in front, and round above, much broader than long and a little broader than high.Mandibles smooth, shining, sparsely striated; clypeus longitudinally striated; the rest of head, pronotum and mesonotum coarsely punctured, with the noticeable development of the longitudinal striations between punctures;epinotum, the node of the petiole and the first gaster coarsely punctured, cribrate; the remains of the gaster smooth and shining, with a few indistinct punctures. Pilosity yellow, rather dense, short and thin covering the whole body.Color dark ferruginous brown; the front of head, sides of thorax, and gaster more reddish; antennae, legs, mandibles reddish brown; the apical segment of gaster more yellowish.Holotype: Daoxian Co. of Hunan Province, 30 Ⅷ 1982, Tong Xinwang leg.; Paratypes: 5, same data as for holotype. All the types are deposited in the Insect Collections of the Forest Research Institute, the Chinese Academy of Forestry, Beijing, China.This is an unusual species of the shape of the humeri of thorax, and easily distinguished from other oriental species of Gnamptogenys of which I have seen the. Species and descriptions.