Macaronesia, Rivers, Skin, Madeira, Brazil, Discovery and exploration, Identification and classification, New species, Amazonas, Amazonian rainforest, anuran diversity, Body size, Fins, Frogs, Hyla, Physical characteristics, Rondônia, Scinax onca sp. n, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian,...