The butterflies fauna survey in the west forest of Da-Hingganling mts. (Inner Mongolia, the People’s Republic of China) was carried out from 29 July to 8 August, 2016. 31species butterflies are reported with collecting date.
Erebia neriene population from Inner Mongolia (Manchuria), China are compared with that from near Gornyi, Khabarovsk district(Far East Russia) and the geographical variations are commented.