Pristimantis ridens

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Pristimantis ridens
Pristimantis ridens.jpg
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Craugastoridae
Genus: Pristimantis
Species: P. ridens
Binomial name
Pristimantis ridens
(Cope, 1866)

Phyllobates ridens Cope, 1866
Eleutherodactylus ridens (Cope, 1866)

Pristimantis ridens, also known as the pygmy rain frog and the Rio San Juan robber frog, is a species of frog in the family Craugastoridae. It is found in western Colombia (Pacific slopes of the Cordillera Occidental), and then through Panama and Costa Rica to Nicaragua and eastern Honduras.[2][3][4][5]


Pristimantis ridens are small frogs, with males growing to 19 mm (0.75 in) and females to 25 mm (0.98 in) in snout–vent length. The dorsal skin is smooth and pale brown or yellow in colour, with some pink undertones. There is often a slightly darker W-shaped patch just behind the head. Individuals may have a single or two, parallel dorsolateral stripes. The thighs are barred. The ventral colouration is yellow with some dark specks.[4]

Pristimantis ridens can be very similar to Pristimantis cruentus.[5]

Habitat and conservation[edit]

The species' natural habitats are humid lowland and montane forests to about 1,600 m (5,200 ft) above sea level.[1][4] It also occurs disturbed habitats such as degraded secondary vegetation, plantations, rural gardens, and urban areas.[1]


  1. ^ a b c Solís, F.; Ibáñez, R.; Chaves, G.; Wilson, L.D. & Grant, T. (2010). "Pristimantis ridens". IUCN Red List of Threatened Species. Version 2014.3. International Union for Conservation of Nature. Retrieved 6 December 2014. 
  2. ^ Frost, Darrel R. (2015). "Pristimantis ridens (Cope, 1866)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 20 December 2015. 
  3. ^ Acosta-Galvis, A.R. (2015). "Pristimantis ridens (Cope, 1866)". Lista de los Anfibios de Colombia V.05.2015. Retrieved 20 December 2015. 
  4. ^ a b c "Pristimantis ridens Cope 1866". Amphibians of Panama. Smithsonian Tropical Research Institute. Retrieved 20 December 2015. 
  5. ^ a b McCranie, James R. (2015). "A checklist of the amphibians and reptiles of Honduras, with additions, comments on taxonomy, some recent taxonomic decisions, and areas of further studies needed". Zootaxa. 3931 (3): 352–386. doi:10.11646/zootaxa.3931.3.2.