Litoria is a genus of Hylidae tree frogs native to Australia, the Bismarck Archipelago, the Solomon Islands, New Guinea, the Lesser Sunda Islands, the Moluccan Islands, and Timor. They are sometimes collectively referred to as Australasian treefrogs. They are distinguishable from other tree frogs by the presence of horizontal irises, no pigmentation of the eyelids, and their Wallacean distribution. About 150 species are described, buts several new species are described every year on average.