[2] They are found from northeastern India and southern China, through Southeast Asia, to the Greater Sunda Islands; the highest species richness is in Indochina.

[1] They are medium to small-sized frogs with maximum snout–vent lengths that range from 2 to 7.5 cm (0.8 to 3.0 in) depending on species, and their skin can be smooth, warty or tuberculated.

[3] The genus includes species that are contrastingly marked, but most are very well-camouflaged, resembling plant material (typically bark or moss) or bird droppings.

In species where known, breeding takes place in a small water pool in a cavity of a tree, bamboo or karst.

The taxonomy of this genus and Nyctixalus as well as Theloderma moloch has been in flux;[2] today both AmphibiaWeb and Amphibian Species of the World recognize the two genera as valid.