Abstract
Austral Yungas cloud forest (Southern Bolivia and NW Argentina) is known for its high diversity, steep landscape and low accessibility. Anacroneuria Klapálek (Plecoptera: Perlidae) species in this ecoregion have been seldom studied. We aim to know its species diversity (based on adult characters) and explore larval characters important for their recognition. We have reared dozens of larvae from different localities and collected adults with light traps. Reared adults and associated larval exuviae were studied, photographed and drawn. We have identified 13 species (based on male aedeagus) and successfully associated larval and adult stages for seven species. In the present paper we describe seven new species: Anacroneuria tafi sp. nov., A. flavinigra sp. nov., A. saican sp. nov., A. triplex sp. nov., A. calilegua sp. nov., A. lutea sp. nov., and A. tupacamaru sp. nov. For six species previously described we present new data and stage descriptions: A. arrazayalensis Orce, A. handlirschi Klapálek, A. reedi (Navás), A. tucuman Stark, A. saltensis Froehlich, and A. chimborazo Stark. Genetic divergence for some of these species was studied using the barcode region of the mitochondrial gene COI. A key to the male adults of all the species of Anacroneuria from Northwestern Argentina is presented.
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