Abstract
We diagnose, describe and illustrate Hemicotelles misti Anaya, Huanca and Packer n. sp., from the slopes of the Misti Volcano in Arequipa Province, Peru. The new species represents a range extension of 1500 km from the nearest confirmed locality for the genus, in Central Chile. We provide a fully illustrated key for the identification of the three species in the genus and add the species to an earlier phylogeny for Colletinae.