Rallus nanus nomen novum: a replacement name for Rallus minutus Alcover et al. 2015

In a recent paper, we described five new species of rails from the Macaronesian islands ( Alcoveret al., 2015). We proposed the name of Rallusminutus to designate the Sao Jorgerail. One day after its publication, Fred Ruhe (via e-mail) pointed out to us that the name was preoccupied, making Rallusminutus Alcover, Pieper, Pereira & Rando 2015 a primary homonym, which in turn makes it permanently invalid.