Nymphargus chancas

Nymphargus chancas
Conservation status
	; Endangered (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	Anura
Family:	Centrolenidae
Genus:	Nymphargus
Species:	N. chancas
Binomial name
	Nymphargus chancas; (Duellman and Schulte, 1993)
Synonyms[2]
	Cochranella chancas Duellman and Schulte, 1993

Nymphargus chancas (common name: Peru Cochran frog) is a species of frog in the family Centrolenidae.[2] Until recently it was only known from its type locality in the Lamas Province in Peru;[3][4] however, it is now known to occur more widely in the northern San Martín Region of Peru, extending into the Cordillera del Cóndor in Zamora-Chinchipe Province, Ecuador.[2][3][4]

Description

Adult males measure 25–26 mm (1.0–1.0 in) in snout–vent length; female length has not been reported. The snout is truncate, or sometimes slightly protruding laterally. The tympanum is visible, with its upper hidden by the supra-tympanic fold and tubercles. The toes are two-thirds webbed. Dorsal coloration varies from dull yellow green to orange yellow or olive gray.[4] There are distinct yellow flecks on the dorsum, which can occasionally belarge and bright. However, individuals can change their color rapidly. One specimen had prominent occellations that faded after capture. The iris can be pale yellowish-bronze, or silvery-white with a faint yellow suffusion.[3]

Habitat and conservation

Nymphargus chancas is an arboreal frog found in montane cloud forests near streams.[1] Its elevational range is 1,003–1,430 m (3,291–4,692 ft) above sea level.[3] It is nocturnal.[4]

Its conservation status is Endangered.[1] The Cordillera del Cóndor population is threatened by habitat destruction and pollution associated with mining.[4]

References

IUCN SSC Amphibian Specialist Group (2022). "Nymphargus chancas". IUCN Red List of Threatened Species. 2022: e.T54953A89198212. Retrieved 23 December 2022.
Frost, Darrel R. (2017). "Nymphargus chancas (Duellman and Schulte, 1993)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 19 January 2018.
Twomey, E.; Delia, J. R. J. & Castroviejo-Fisher, S. (12 August 2014). "A review of Northern Peruvian glassfrogs (Centrolenidae), with the description of four new remarkable species". Zootaxa. 3851 (1): 1–87. doi:10.11646/zootaxa.3851.1.1.
Guayasamin, J. M.; et al. (2010–2017). Ron, S. R.; Yanez-Muñoz, M. H.; Merino-Viteri, A.; Ortiz, D. A. (eds.). "Nymphargus chancas". AmphibiaWebEcuador. Version 2018.0. Museo de Zoología, Pontificia Universidad Católica del Ecuador (QCAZ). Retrieved 19 January 2018.

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[iucn_status_9_December_2022-1] IUCN SSC Amphibian Specialist Group (2022). "Nymphargus chancas". IUCN Red List of Threatened Species. 2022: e.T54953A89198212. Retrieved 23 December 2022.

[Frost-2] Frost, Darrel R. (2017). "Nymphargus chancas (Duellman and Schulte, 1993)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 19 January 2018.

[Twomey_et_al._2014-3] Twomey, E.; Delia, J. R. J. & Castroviejo-Fisher, S. (12 August 2014). "A review of Northern Peruvian glassfrogs (Centrolenidae), with the description of four new remarkable species". Zootaxa. 3851 (1): 1–87. doi:10.11646/zootaxa.3851.1.1.

[AWE-4] Guayasamin, J. M.; et al. (2010–2017). Ron, S. R.; Yanez-Muñoz, M. H.; Merino-Viteri, A.; Ortiz, D. A. (eds.). "Nymphargus chancas". AmphibiaWebEcuador. Version 2018.0. Museo de Zoología, Pontificia Universidad Católica del Ecuador (QCAZ). Retrieved 19 January 2018.