Andiperla morenensis n. sp. is described from the Perito Moreno Glacier, Santa Cruz Province, Argentina. The new species differs from its only congener, A. willinki, Aubert, 1956 by tergum X produced into an acute lobe directed posteriorly and by the presence of a small epiproct. The18S rRNA and COI gene sequence of A. morenensis n. sp. is provided.