Nyctimystes bivocalis is a species of frog in the subfamily Pelodryadinae, endemic to New Guinea.[1] [2] It has been observed in the Cloudy Mountains and part of the Owen Stanley Mountains in Milne Bay Province.[3] The adult male frog measures 38.5 to 49.2 mm long in snout-vent length and it is gray-brown in color. The adult female measures 42.2 to 55.7 mm long and is orange-brown in color.
The name bivocalis or double-voice comes from the two levels of pitch in the frog's call.