Yanes, Y., Santana, J., Artiles, M., Deniz, F., Martín, J., Alonso, M.R. & Ibáñez, M. (2011) Five new Napaeus species (Gastropoda: Pulmonata: Enidae) from Gran Canaria and El Hierro (Canary Islands). Zootaxa, 2901 (1), 35–51.