Batrachyla nibaldoi

Adult females measure 35–41 mm (1.4–1.6 in) in snout–vent length; male length is not reported. The snout is rounded in dorsal view and sloping in lateral profile. The tympanum is visible; the supra-tympanic fold is evident. The fingers and toes are slender and have moderately pointed tips. The fingers have no webbing whereas the toes have thin, basal webbing. Dorsal ground color is from light brown or yellowish brown^[2] to grayish, with dark brown spots that forming longitudinal lines.^[4] There is a dark canthal band, continuing behind the eye to the tympanic region. The ventrum is white.^[2]

Batrachyla nibaldoi occur in steppe habitat in valleys surrounded by forest of Nothofagus antarctica, Nothofagus betuloides and Drymis winteri. They are often found under logs rocks and in shrub habitat.^[1] Males call from lagoons and temporary pools with plenty of vegetation.^[4] Eggs are laid under rocks and moss and when rain floods, larvae develop in the water.^[1]

This species is locally abundant,^[1] including along the Carretera Austral.^[4] Its range includes protected areas, e.g., Laguna San Rafael National Park. The introduced American mink is a potential threat.^[1]