A taxonomic revision of Rhyacophila aquitanica carpathica Botosaneanu, 1995, is proposed based on molecular results and previously described morphological differences. Genitalia of R. aquitanica McLachlan, 1879, and Rhyacophila carpathica Botosaneanu stat. n. are redrawn here to facilitate the distinction of the two entities. While the morphological and ecological characteristics of the two species show many similarities, the nucleotide sequences

We used 2 caddisflies, Drusus discolor and Drusus romanicus, to test explicitly whether closely related species that occupy similar niches and occur in partial sympatry maintain comparable population structure and share a similar population history. We used mitochondrial sequence data to analyze and compare the population structure and the phylogeography of 105 specimens of D. discolor and 74 individuals of D. romanicus collected in southeastern

Few studies have analysed the biogeography of mountain aquatic organisms, although this habitat provides stable conditions in which many species survived Pleistocene climatic oscillations, usually in the geographical vicinity of their present distribution ranges. The mountain caddisfly Rhyacophila aquitanica was selected as a model organism for this habitat type. Morphological measurements of genitalia and external characters of male individuals