Residing primarily in southeast regions of Brazil near the Atlantic coast.

[1] The exception is the Aplastodiscus perviridis which is found mostly in Brazil, but has also been documented being in Argentina, and might reside in Paraguay.

[2] The major revision of the Hylidae genus expanded it to include 12 more species originally from Hyla.

There are currently 16 described species with the most recent addition Aplastodiscus heterophonicus being described in 2021.

[5] Populations of some of the species are declining and the causes include residential and commercial development, human incursions and disturbance, natural systems modifications, agriculture and aquaculture, pollution, biological resource use, and invasive other problematic species, genes and diseases.