The Rhyacophila fasciata Species Complex (Trichoptera: Rhyacophilidae) in Central Europe with description of a new species, Rhyacophila loeffleri Valladolid & Waringer, n. sp., based on morphological, genetic and ecological evidence.

The morphology of the larva, pupa, male, and female of Rhyacophila loeffleri Valladolid & Waringer, n. sp., from Austria, Czech Republic, France, and Italy is described.

The Rhyacophila fasciata Group in Europe: Rhyacophila fasciata Hagen 1859 and formerly synonymized species (Trichoptera: Rhyacophilidae), with new description of Rhyacophila fasciata and Rhyacophila septentrionis McLachlan 1865 (stat. prom.).

The presence and distribution of Rhyacophila fasciata Hagen 1859 in Europe were revised, based on bibliographic study, collection specimens, and new material collected in different countries. The status of formerly synonymized species, Rhyacophila ferruginea (Scopoli 1763) and Rhyacophila septentrionis McLachlan 1865 was also assessed. The type of R.

The Rhyacophila fasciata Group in Croatia and Bosnia and Herzegovina: Rhyacophila f. fasciata Hagen 1859 and the description of two new subspecies, Rhyacophila fasciata delici Kučinić Valladolid (ssp. nov.) from Croatia and Bosnia and Herzegovina and Rhyacophila fasciata viteceki Valladolid Kučinić (ssp. nov.) from Bosnia and Herzegovina (Trichoptera: Rhyacophilidae).

We present the description of two new subspecies of the Rhyacophila fasciata Group: Rhyacophila fasciata delici Kučinić Valladolid (ssp. nov.), broadly distributed in Croatia and present also in Bosnia and Herzegovina, and R.