Oreophrynella nigra

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Oreophrynella nigra
File:Oreophrynella nigra.JPG
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Bufonidae
Genus: Oreophrynella
Species:
O. nigra
Binomial name
Oreophrynella nigra
Señaris, Ayarzaguena & Gorzula, 1994[2]
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Oreophrynella nigra, or pebble toad,[3] is a species of toad in the family Bufonidae. It is endemic to the Guiana Highlands in Bolívar State, Venezuela, and known from two tepuis, Kukenan-tepui and Yuruani-tepui, both belonging to the Eastern Tepuis.[1][4]

Description and behaviour

It is a small species of toad: males measure 16.5–23.5 mm (0.65–0.93 in) and females 20.4–30 mm (0.80–1.18 in) in snout–vent length.[2]

When threatened, the toad folds its limbs under its body, tucks its head in and tenses in a ball shape. If on an incline (this is how it gets its name), this causes it to roll down the slope, escaping the attention of its predator, and looking like a dislodged pebble. Its cryptic black and dark grey coloring that may appear as dark navy blue to some blends with its sandstone habitat.[3]

Habitat and conservation

Its natural habitats are rocks and peat bogs in montane tepui environments at elevations of 2,300–2,700 m (7,500–8,900 ft) asl. It is classified as vulnerable because of its apparently restricted range.[1]

Media interest

This toad was featured on the BBC series, Life, pursued by a tarantula spider.[3]

References

  1. 1.0 1.1 1.2 Lua error in package.lua at line 80: module 'strict' not found.
  2. 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
  3. 3.0 3.1 3.2 Pebble toad's rock and roll life, Matt Walker, BBC, 15 October 2009, Retrieved 6 November 2015
  4. Lua error in package.lua at line 80: module 'strict' not found.

External links