Waterfall frog
| Waterfall frog | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Anura |
| Family: | Hylidae |
| Genus: | Litoria |
| Species: | L. nannotis |
| Binomial name | |
| Litoria nannotis Andersson, 1916 | |
| Synonyms | |
|
Mosleyia nannotis Wells and Wellington, 1985 | |
The Australian waterfall frog or torrent treefrog (Litoria nannotis) is a species of tree frog native to Far North Queensland, Australia. The common name "waterfall frog" is indicative of its habitat of moist, rocky streams, and is often found along waterfalls within its range.
Description
The waterfall frog is large in size, reaching 5.5 cm in length. The dorsal surface is mottled with puck brown. The patterning on the back is similar to its habitat, allowing for effective camouflage against granite. The ventral surface is bright orange, green, and pink in colour, and granular. The posterior ventral surface is translucent, showing internal parts.
The toe pads of L. nannotis are very large in comparison to toe width, to aid in gripping to rocks in the rapids. The nuptial pads of breeding males are also large, covering the entire inner surface of the thumb, with spines also present on the arms and chest. The tympanum is not visible, the fingers are partially webbed, and the toes are completely webbed.
Like the stoney creek frog (Litoria wilcoxi), and many other stream-dwelling frogs, waterfall frogs lack vocal sacs. This may be because the sound of a running stream drowns out any calls, and it becomes a waste of energy.
Ecology and behaviour
The waterfall frog is a stream-dwelling frog native to tropical north Queensland, from Paluma to Cooktown, notable in the Mt. Carbine uplands. It is found at altitudes between 180 and 3,000 m (590 and 9,840 ft). It has undergone large declines in high-altitude areas (likely from chytridiomycosis), with many populations completely extinct. It is, however, stable in lowland areas.
Conservation status
It is listed as Endangered under both the IUCN Red List and Queensland's Nature Conservation Act 1992.
References
- Cunningham, M. 2002. Identification and evolution of Australian torrent treefrogs. Memoirs of the Queensland Museum. 48(1):93-102. Brisbane, Qld.
- "DEH Species Profiles - Litoria nannotis - Waterfall Frog, Torrent Tree Frog". Retrieved 2006-12-18.
- "IUCN Red List of Threatened Species: Litoria nannotis". Retrieved 2006-12-18.
Further reading
- Hodgkison, Simon, Hero, Jean-Marc. 2001. Daily Behavior and Microhabitat Use of the Waterfall Frog, Litoria nannotis in Tully Gorge, Eastern Australia. Journal of Herpetology. 35(1):116-120.
External links
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Wikispecies has information related to: Litoria nannotis |
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Wikimedia Commons has media related to Litoria nannotis. |