Reflections on the genus Amaga Ogren and Kawakatsu 1990, and description of a new genus of land planarian (Platyhelminthes: Tricladida: Geoplanidae) - Grau, José Horacio; Sluys, Ronald; Froehlich, Eudoxia Maria; Carbayo Baz, Fernando Jesús (Journal of Natural History, 2012)