Pristimantis balionotus

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Pristimantis balionotus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Craugastoridae
Genus: Pristimantis
Subgenus: Pristimantis
Species: P. balionotus
Binomial name
Pristimantis balionotus
(Lynch (fr), 1979)

Eleutherodactylus balionotus Lynch, 1979[2]

Pristimantis balionotus is a species of frog in the family Craugastoridae. It is endemic to Ecuador and only known from its type locality on the border between the Loja and Zamora-Chinchipe Provinces, near the crest of the Ecuadorian Andes.[3][4] Common name crest robber frog has been coined for it.[3]


Adult males measure 21.8–22.2 mm (0.86–0.87 in) (based on two males only) and females 27.1–29.1 mm (1.07–1.15 in) in snout–vent length. The snout is subacuminate in dorsal and rounded in lateral profile. The tympanum is visible. The fingers and toes bear discs and lateral fringes but no webbing. Skin is dorsally tuberculate and ventrally areolate. The dorsum is dark brown with some flecks. The ventrum is dirty white and may have black flecks.[2][4]

Pristimantis balionotus is similar to Pristimantis riveti and might be its geographic variant.[2]

Habitat and conservation[edit]

Its natural habitat is sub-páramo bushland at 2,800 m (9,200 ft) above sea level. Specimens have been found from terrestrial bromeliads during the daytime. It is moderately common but threatened by habitat loss and degradation caused by agricultural activities and pine plantations. It occurs in the Podocarpus National Park.[1][4]


  1. ^ a b Lynch, J.; Coloma, L.A.; Ron, S. (2004). "Pristimantis balionotus". IUCN Red List of Threatened Species. IUCN. 2004: e.T56450A11480043. doi:10.2305/IUCN.UK.2004.RLTS.T56450A11480043.en. Retrieved 6 June 2017. 
  2. ^ a b c Lynch, John D. (1979). "Leptodactylid frogs of the genus Eleutherodactylus from the Andes of southern Ecuador". Miscellaneous Publication, Museum of Natural History, University of Kansas. 66: 1–62. 
  3. ^ a b c Frost, Darrel R. (2017). "Pristimantis balionotus (Lynch, 1979)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 6 June 2017. 
  4. ^ a b c Frenkel, C.; et al. (2012–2014). "Pristimantis balionotus Lynch (1979)". Ron, S. R., Guayasamin, J. M., Yanez-Muñoz, M. H., Merino-Viteri, A., Ortiz, D. A. and Nicolalde, D. A. 2016. AmphibiaWebEcuador. Version 2016.0. Museo de Zoología, Pontificia Universidad Católica del Ecuador (QCAZ). Retrieved 6 June 2017.