The tadpole of Aplastodiscus arildae, from Estação Ecológica de Fechos, Municipality of Nova Lima, State of Minas Gerais, is described and figured. Tadpoles from Parque das Mangabeiras, Municipality of Belo Horizonte, were also examined. Tadpoles were found on the bottom of rocky hillside streams backwaters, edged by riparian vegetation. Tadpoles of A. arildae present labial tooth row formula 2(2)/4(1), oral disc with a median small gap in the anterior labium papillae row, few submarginal papillae without horned teeth, dark red iris and body with marbled olive-brown color in life. These characteristics distinguish A. arildae tadpoles from the tadpoles of A. albofrenatus and A. eugenioi, the already described tadpoles for the A. albofrenatus species group.
