''Rulyrana saxiscandens'' is a species of

frog A frog is any member of a diverse and largely semiaquatic group of short-bodied, tailless amphibian vertebrates composing the order (biology), order Anura (coming from the Ancient Greek , literally 'without tail'). Frog species with rough ski ...

in the family Centrolenidae. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the Cordillera Escalera,

Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ...

, approximately between the cities of

Tarapoto Tarapoto, founded in 1782 as Santa Cruz de los Motilones de Tarapoto, is a commercial hub town in the San Martín Province of the Department of San Martín of northern Peru. It is an hour by plane from Lima, in the high jungle plateau to the east ...

and

Moyobamba Moyobamba () or Muyupampa ( Quechua ''muyu'' circle, ''pampa'' large plain, "circle plain") is the capital city of the San Martín Region in northern Peru. Called "Santiago of eight valleys of Moyobamba" or "Maynas capital". There are 50,073 inh ...

Taxonomy and nomenclature

The delimitation of this species underwent a major change in 2014 when ''Rulyrana saxiscandens'' (originally ''Cochranella saxiscandens''), ''Cochranella tangarana'' and ''Cochranella croceopodes'' were found to represent the same species. All three species were described in the same paper, so none of them have priority. Using the Principle of the First Reviser, Evan Twomey and colleagues chose ''C. tangarana'' and ''C. croceopodes'' as junior

synonym A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are a ...

s of ''Rulyrana saxiscandens''.

Habitat

''Rulyrana saxiscandens'' have been found along streams and creeks and in the spray zones of waterfalls at elevations between

above sea level Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level ...

. It does not occur in heavily modified habitats but can occur in secondary

forest A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, ...

References

saxiscandens Amphibians of Peru Endemic fauna of Peru Amphibians described in 1993 Taxa named by William Edward Duellman Taxonomy articles created by Polbot {{Centrolenidae-stub