About Rhacophorus rhodopus Liu & Hu, 1960
Rhacophorus rhodopus is a small tree frog species with a pointed snout. Adult body length ranges from about 31 to 55 mm (1.2 to 2.2 inches), and females are larger than males. In living individuals, the back is reddish-brown, pinkish-brown, or yellowish-brown with no green hues; this color changes to purplish brown in preserved specimens. The entire back is covered in many darker spots, which usually form an X-shaped pattern behind the head, and sometimes form stripes across the lower back. A small number of large white spots may also appear on the back. Most or all of the hind legs and upper sides of the arms match the back's color, and dark bands are usually present across the upper surfaces of the arms and hind legs. The sides, belly, and toes are dark yellow, turning dark pink in preserved specimens. Almost always, there is a prominent large black spot on the flanks behind the arms. The well-developed webbing on the toes is bright orange-red and has no spots. The eyes are light brown. This species was long confused with Rhacophorus bipunctatus, and can be distinguished from it by its smaller overall size (R. bipunctatus adults measure 37–60 mm in body length), and by its spotted brown back that has no green or olive tones (R. bipunctatus has a bright green to brownish green back with no darker spotting). When individuals are of similar size, R. bipunctatus has a much larger head than R. rhodopus. The natural habitats of R. rhodopus are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, and intermittent freshwater marshes. It occurs from near sea level up to altitudes of at least 1,500 m (4,900 ft) above sea level. R. rhodopus was previously considered synonymous with R. bipunctatus, so it was included in the IUCN status assessment for R. bipunctatus, which was assessed as a Species of Least Concern in 2004 due to its wide range. Rhacophorus namdaphaensis, a name that refers to the same frogs as R. rhodopus, was assessed as a Data Deficient species in 2004 due to uncertainty about the limits of its distribution. When R. rhodopus is accepted as a valid distinct species that includes R. namdaphaensis, it is classified as Least Concern, meaning it is not a threatened species.
