Abstract
A new genus and species of Philopotamidae (Philopotaminae), Aymaradellaboliviana, is described from the Bolivian Andes of South America. The new genus differs from other Philopotaminae by the loss of 2A vein in the hind wing and, in the male genitalia, the synscleritous tergum and sternum of segment VIII, and the elongate sclerotized dorsal processes of segment VIII. The first record of Hydrobiosella (Philopotaminae) in the New World is also provided with a new species from the Andes of Ecuador, Hydrobiosellaandina. In addition, a new species of the Neotropical genus Chimarrhodella (Chimarrinae), Chimarrhodellachoco, is described from the Choco-Andean region of Ecuador, and Chimarrhodellaperuviana (Ross) is recorded from Ecuador for the first time. Lastly, Wormaldiaimbrialis (Philopotaminae), new species, is described, also from the Ecuadorian Choco.