Lymnastis is a genus of ground beetles of the subfamily Trechinae. The body length of the adult is 2.0–2.2 millimetres (0.079–0.087 in). Body-color is yellow and flat. Representatives of this genus are characterized by the following features: \n* Head is small and narrow; \n* Compound eyes are usually large and are made up of about ten of the facet cells; \n* Frontal supraorbital notch is reduced; \n* Prischitkovaya groove on top is not bent; \n* The elytron have fine hairs and have no return grooves; \n* Vertex of the Abdomen appears from the elytron; \n* The upper body is covered in soft hairs.