[2] It is monotypic, being represented by the single species Arcovomer passarellii, commonly known as Passarelli's frog.

[3] It is endemic to south-eastern Brazil and found in Espírito Santo, Rio de Janeiro, and São Paulo states.

Frogs from Espírito Santo may represent another, undescribed species.

[4] Its body is brown above with a distinct irregular dark pattern running the whole length of the animal.

When disturbed, these frogs may jump and then assume a stiff-leg posture, possibly as a means to avoid detection by predators relying on their sight.