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Gruñidor de Valeria

Pristidactylus valeriae


Medium size (Snout-Vent Length = 81 mm, Tail Length = 122 mm) and robust appearance with prominent head. Well developed gular fold. Granular dorsal scales, rounded, smooth and juxtaposed. General coloration blue-grayish to light-blue, without dorsal spots. Gray head, without transverse bands. Reddish inside part of the flanks and anterior thighs. Yellowish or lemon yellow belly. Gular region without black band and a yellowish region above it. Cylindrical tail, with reddish sides. Color of the iris of the eyes from blue to yellowish-grayish. In some adult specimens, the back has an arrangement of small dark brown spots following the vertebral line, giving a leopard-like appearance. The flanks can also have an arrangement of spots in rows, with irregular extensions.


Sclerophyllous and oak forests of the Coastal mountain chain in Central Chile.


Female specimen of Pristidactylus valeriae. This species is really hard to find, it has usually a low abundance and they are usually associated with forests of Nothofagus macrocarpa. However, it has also been recently found associated to Chilean sclerophyllous forest. Its common name in Spanish is "gruñidor de Valeria", direct translation to English would be "Valeria's grunting lizard" because of the noise these lizards make when they feel threatened. In Chile we can find four species of grunting lizards (from the Pristidactylus genus). The geographic distribution of Pristidactylus valeriae is restricted to sclerophyllous and oak forests of Chilean Metropolitan and VI Regions, the first being one of the most heavily impacted areas by human beings in Chile. This species is endemic to Chile and is classified as Endangered by the IUCN Red List of Threatened Species. However, few measures have been done by the Chilean Government to ensure its survival.

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Felix Fleck
Felix Fleck 12 months ago

Awesome spotting! Congrats.

Congrats again Juan on the well deserved SOTW

Christine Y.
Christine Y. a year ago

Awesome spotting, congratulations on SOTW!

Zlatan Celebic
Zlatan Celebic a year ago

Great finding, photos and notes! Congrats

Brian38 a year ago

Congratulations Juan on a well deserved SOTW!

Mark Ridgway
Mark Ridgway a year ago

Congratulations Juan.

Neil Ross
Neil Ross a year ago

Excellent spotting, Juan. Love the photos and notes. Congrats on your SOTW.

DanielePralong a year ago

Congratulations Juan, this rare lizard has won you a Spotting of the Week:

''This female Pristidactylus valeriae, a lizard species endemic to Chile, is our Spotting of the Week! Its Spanish common name is "Gruñidor de Valeria", which translates as "Valeria's grunting lizard", referring to the noise these lizards make when threatened. This rare species is locally threatened by habitat degradation, and has been classified as Endangered on the IUCN Red List of Threatened Species. This spotting won the votes of our rangers' team with its multiple shots and completed fields, and because of the rarity and endangered status of the species".



Leuba Ridgway
Leuba Ridgway a year ago

A chubby dragon -cute !

JuanContardo a year ago

Wow!!! Thank you Ashley!

AshleyT a year ago

Your spotting has been nominated for the Spotting of the Week. The winner will be chosen by the Project Noah Rangers based on a combination of factors including: uniqueness of the shot, status of the organism (for example, rare or endangered), quality of the information provided in the habitat and description sections. There is a subjective element, of course; the spotting with the highest number of Ranger votes is chosen. Congratulations on being nominated!

Great find Juan,congrats and thanks for sharing

Alhué, Región Metropolitana de Santiago, Chile

Lat: -34.01, Long: -71.09

Spotted on Dec 5, 2017
Submitted on Dec 5, 2017

Spotted for mission

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