It is endemic to Brazil and only known from its type locality in the Itatiaia National Park, Rio de Janeiro state.

[1][2] It is named in honor of Bertha Lutz, a Brazilian zoologist and feminist.

[6] A single tadpole in Gosner stage 42 (towards the completion of metamorphosis) measured 130 mm (5.1 in) in total length.

During daytime these frogs are found on emergent rocks in shallow places in streams.

They lay the eggs under large rocks in moderately-sized forest streams.