Two species previously known from East Kazakhstan, Acantholycosa katunensis Marusik, Azarkina & Koponen, 2004, known from the holotype male, and A. kurchumensis Marusik, Azarkina & Koponen, 2004, syn. n. known from females, are synonymized, and priority is given to A. katunensis. Acantholycosa katunensis is reported for the first time in the Russian Altai. Both sexes of this species are illustrated, and a distribution map is provided.