[[6] The specific name viejas is a Spanish expression meaning "pretty young women", in reference to three biologist who had studied this species.[2]]Description
Adult males measure {{convert|15|-|19|mm|in|1|abbr=on}} and adult females {{convert|24|-|29|mm|in|1|abbr=on}} in snout–vent length. The snout is long, subacuminate in dorsal view,
and rounded in lateral profile. The tympanum is round and prominent. The fingers and the toes have lateral fringes and round terminal discs but no webbing. Dorsal skin has many non-conical tubercles. The dorsum is copper brown. There are irregular spots that are cream, nearly black, or orange. The flanks are dark brown with paler slanting stripes. The posterior/hidden surfaces of the thighs are dark brown with orange spot. The venter is almost white to pinkish. Grey marbling may be present on the throat. The iris is pale copper to reddish-copper, with thick black reticulation.[2]
Habitat and conservation
Pristimantis viejas occurs in sub-Andean forests at elevations of {{convert|565|–|1880|m|abbr=on}} above sea level.[1][6] Individuals can be found under bushes, in forest edge, secondary forest, and in open areas in forests. It is nocturnal. Breeding occurs through direct development (i.e., there is no free-living larval stage).[1]Pristimantis viejas is a common and adaptable species that seems to benefit from a degree of disturbance to forest habitats. It is not facing any significant threats.[1]References
1. ^1 2 3 4 {{cite journal | author = Castro, F. | author2 = Herrera, M.I. | author3 = Lynch, J. |last-author-amp=yes | title = Pristimantis viejas | journal = IUCN Red List of Threatened Species | volume= 2004 | page = e.T57043A11573535 | year = 2004 | url = https://www.iucnredlist.org/species/57043/11573535 | doi = 10.2305/IUCN.UK.2004.RLTS.T57043A11573535.en | accessdate = 26 October 2018}}
2. ^1 2 {{cite web |url=https://www.batrachia.com/orden-anura/craugastoridae/pristimantis-viejas/ |title=Pristimantis viejas (Lynch & Rueda, 1999) |author1=Acosta Galvis, A. R. |author2=Cuentas, D. |last-author-amp=yes |year=2017 |work=Lista de los Anfibios de Colombia V.07.2017.0 |publisher=www.batrachia.com |accessdate=26 October 2018}}
3. ^1 2 3 {{cite journal |last1=Lynch |first1=J. D. |last2=Rueda-Almonacid |first2=J. V. |last-author-amp=yes |title=New species of frogs from low and moderate elevations from the Caldas transect of the eastern flank of the Cordillera Central |journal=Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales |date=1999 |volume=23 |issue=87 |pages=307–314 |url=http://www.accefyn.com/revista/Vol_23/87/307-314.pdf }}