See text Nyctimystes is a genus of tree frogs in the subfamily Pelodryadinae of the family Hylidae.

This feature presumably acts as camouflage when the frogs are at rest during the day.

Species of this genus inhabit tropical or subtropical montane rainforest.

The eggs are large and are laid on submerged objects in fast-flowing creeks and streams (not all species of this genus have been recorded as doing this, although it is assumed).

All species of this genus have extensive webbing and large toe discs.