This species occurs along the coast of Brazil in Santa Catarina and Rio Grande de Sul states, from 0-20m asl.
Habitat and Ecology
It occurs on sand dunes and nearby areas, and reproduces in temporary pools.
It was previously collected rather extensively, but there have only been a few recent collections and the species is believed to have undergone declines in recent years.
The major threat to this species is habitat loss and degradation due to the conversion of habitat for beaches, urbanization, and off-road recreational vehicle use.
It occurs in Guarita Municipal Park, but there is a need for improved protection of habitat at other sites at which this species is known to occur.
Paulo Garcia 2004. Melanophryniscus dorsalis. In: IUCN 2014