Nyctimystes

Nyctimystes is a genus of tree frog in the Hylidae family. They are principally Papuan species but do inhabit islands in the Moluccas and northern Queensland, Australia. All species in this genus have one distinct feature that separates them from other species in the Hylidae genus, the lower eyelid is marked with pattern of lines, veins or dots. This feature presumably acts as camouflage when the frogs are at rest during the day.