Also known as the Torrent Tree Frog
The Waterfall Frog is olive to olive-green above though sometimes almost black. There is extensive, irregular mottling over the body, sometimes with a bluish metallic sheen on the flanks. There is often brown areas around the throat and the underparts are whitish. The axilla and groin area are flesh-coloured and the hind side of the thighs is dark brown. The skin is finely, granular with occasional small, scattered warts (Cogger 2000).
The Waterfall Frog is larger than other Torrent Tree frogs (Litoria lorica, L. rheocola and L. nyakalensis), and the body size of individuals varies geographically, with those from the Carbine Tablelands being larger than other specimens. Body size varies from 40 to 53 mm in most populations to 54 to 60 mm in the Carbine Tableland population (Cunningham 2002).
The Waterfall Frog has large fingers with basal webbing and large toe discs that are nearly fully webbed. The second finger is longer than the first.The tympanum (ear disc) is distinct, and the species has a prominent inner metatarsal tubercle and a small outer tubercule (growths on inner and outer 'wrist' area). There is no pectoral fold (chin area) and vomerine teeth (upper mouth) are prominent (Cogger 2000).
The Waterfall Frog is a stream dwelling species that is endemic to the Wet Tropics Bioregion (Hodgkison & Hero 2001; Williams & Hero 1998, 2001). It is restricted to rocky stream habitats in rainforest or wet sclerophyll forest where there is fast flowing water, waterfalls and cascades (Liem 1974; McDonald 1992). Unlike most stream-breeding frog species that live in the adjacent forest and use the stream habitat for breeding, both male and female Waterfall Frogs use the stream as primary habitat throughout the year (Hodgkison & Hero 2001, 2002). Adults and juveniles sometimes form small aggregations (4-6 individuals) amongst large boulders behind waterfalls (Liem 1974; Hero 2001, pers. comm.). Tadpoles of the Waterfall Frog are predominantly found in fast flowing sections of streams, in riffles or torrents, adhering to rocks (Richards 1992).
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