Species found on the ground, among the litter, during field survey at Riacho dos Machados. The vegetation is part reforestation, part Cerrado.
An adult specimen found in a shallow pond after a heavy, night-time rain where numerous others were observed together with a large Ceratophrys cranwelli which opportunistically preyed on these smaller microhylids.
Dermatonotus muelleri is a species of frog in the Microhylidae family. It is monotypic within the genus Dermatonotus. It is found in Mexico, Argentina, Bolivia, Brazil, and Paraguay. Its natural habitats are subtropical or tropical dry forests, moist savanna, subtropical or tropical moist shrubland, subtropical or tropical seasonally wet or flooded lowland grassland, and intermittent freshwater marshes. It is threatened by habitat loss.