''Rulyrana saxiscandens'' is a species of

frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...

in the family Centrolenidae. It is

endemic Endemism is the state of a species being found 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 found elsew ...

to the Cordillera Escalera,

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

, approximately between the cities of

Tarapoto 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 of what is known as the ''selva baja'' (low jungle). Althoug ...

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 inha ...

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 The International Code of Zoological Nomenclature (ICZN) is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals. It is also informally known as the ICZN Code, for its publisher, the ...

, Evan Twomey and colleagues chose ''C. tangarana'' and ''C. croceopodes'' as junior

synonym A synonym is a word, morpheme, or phrase that means exactly 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 all ...

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 the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as ''orthometric heights''. The comb ...

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

forest A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...

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