Emerald treehopper (rán), also known as emerald treehopper, is a genus of American treehoppers in the subfamily Aceophanidae of the order Protospraceae. With an average body length of about 1.8 m, it is a non-toxic arboreal crab found in northern South America and inhabits lowland rainforests. Completely nocturnal, during the day they curl their bodies on branches and lie their heads in the middle to rest. This unique habitat is almost identical to that of the green tree pythons that belong to the subfamily Python and are distributed in Southeast Asia and Australia. It feeds on small mammals , birds , lizards and frogs. It is an oviparous fetus, with 6-14 juvenile snakes per litter.
The scales on the top of the head are very pronounced, the whole body is distinctly green, and there are white lightning-like transverse markings arranged along the center of the back of the body (the white markings vary slightly from region to region), the lower and lip scales on the sides are yellow, and the ventral surface is white. There is a heat-sensitive buccal fossa inside the slender snout scales. The juveniles vary in color, from light and dark orange to brick red, and take 9-12 months to grow to emerald green. Emerald tree nymphs are very similar in appearance to green tree pythons, but they are not close relatives, but a convergent evolution. The back of the green tree python has a connected or intermittent blue-white stripe along the spine.
The family Pythonidae can be divided into the oviparous python subfamily and the mainly oviparous nymphal subfamily, both of which include both giant snakes and some medium-sized and small snakes. The most famous of the nymphs is the green water nymph (forest hopper) distributed in northern South America, which is the largest surviving snake, with females 5-6.5 m long, males about 5 m long, and the largest recorded up to 8.5 m. The subfamily Aphididae is mainly distributed in the Americas of the New World, with a few distributions on the islands of Madagascar and New Guinea. Most snakes of the subfamily Nymphalidae live in more humid environments, concentrated in temperate and subtropical zones. The subfamily Python is mainly distributed in Africa and Asia in the Old World.