A new red-spotted species of armored catfish Ancistrus Kner, 1854 (Siluriformes: Loricariidae) from rio Branco, Roraima State, Brazilian Amazon - Oliveira, Renildo Ribeiro de; Zuanon, Jansen Alfredo Sampaio; Zawadzki, Cláudio; Pydaniel, Lúcia Helena Rapp (Ichthyological Exploration of Freshwaters, 2015)