Rhacophorus rhodopus is a species of frog in the moss frog family (Rhacophoridae). It occurs in south-eastern Asia, from India to southern China, and south to Malaysia. Previously unknown from Laos, it has now been found in Phongsali Province and at Luang Prabang. Its taxonomy is disputed. Description R. rhodopus is a smallish tree frog with a pointed snout and body length of about 31–55 mm when adult, with females being larger than males. Its back is reddish-, pinkish-, or yellowich-brown without any green hues in living animals; in preserved specimens this becomes purplish brown. There are many darker spots all over the back, usually forming an X-shaped pattern behind the head and sometimes stripes across the lower back. Sometimes, there are a few large white spots on the back, also. The hind legs and the upper sides of the arms are for the most part or entirely the color of the back; there are usually dark bands across the upperside of arms and hind legs. The sides, belly and toes are dark yellow, becoming dark pink in preserved specimens. Behind the arms, there is almost always a conspicuous large black spot on the flanks. The well-developed webbing of the toes is bright orange-red and not spotted. The eyes are light brown. It can be distinguished from R. bipunctatus, with which it was long confused, by the smaller size (R. bipunctatus has a body length of about 37–60 mm) and spotted brown back without any green or olive (R. bipunctatus has a bright green to brownish green back without darker spotting). In individuals of similar size, R. bipunctatus has a much larger head. Ecology and status Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, and intermittent freshwater marshes. It occurs from nearly sea level to altitudes of at least 1,500 m ASL. R. rhodopus was included in the IUCN status assessment for R. bipunctatus, with which it was then considered synonymous, and assessed as a Species of Least Concern due to its wide range in 2004. R. namdaphaensis, which refers to the same frogs as R. rhodopus, was assessed as a Data Deficient species in 2004, due to uncertainties about the limits of its distribution. Altogether, when R. rhodopus is accepted as a valid species (including R. namdaphaensis), it would be of Least Concern, meaning it is not threatened. Taxonomy R. rhodopus