It is endemic to Brazil and only known from the region of its type locality in Poços de Caldas, Minas Gerais state.

[3] The specific name vulcaniae refers to the volcanic origin of the area of the type locality.

[2] Bokermannohyla vulcaniae is a medium-sized tree frog, about 40–53 mm (1.6–2.1 in) in snout–vent length.

[2] The male advertisement call consists of two pulsed notes emitted together or separately.

[4] Bokermannohyla vulcaniae are known from a gallery forest adjacent to a stream at about 1,000 m (3,300 ft) above sea level (the type locality)[1][2] and in a temporary swamp at the forest edge at 1,248 m (4,094 ft) asl.