Pseudoeurycea papenfussi Parra-Olea, García-París, Hanken & Wake 2005

Pseudoeurycea papenfussi is a muscular salamander of reasonably large size with long, robust limbs and a stout, comparatively blunt-tipped tail that is constricted at the base. The snout-to-vent length in males ranges from 70.0 - 84.8 millimeters and in females 72.0 - 89.4 millimeters. The head, which is wide and fairly long, has massive jaw muscles, and the segmental muscles on the trunk form costal grooves. Well-developed eyes protrude over the dorsal outline, and the nostrils are small and open. Males have a round mental gland under their chin that females lack. Parotoid glands are absent. Muscles are conspicuous along their costal grooves. The tail is thick, constricted at the base, and fairly blunt at the tip. The limbs are long and thick. The hands and feet are comparatively broad with long, slender digits. The longest digit is the third digit, and the length of the fifth digit is much shorter, though still noticeable. Subterminal pads are present but small, and may lack or have slight webbing. (Parra-Olea et al. 2005).This species is distinguished from other species in the subfamily Bolitoglossinae by its muscular form. Pseudoeurycea smithi is closely related, and P. papenfussi has been misclassified in the past as this species. Pseudoeurycea papenfussi can be distinguished from P. smithi by having longer limbs and more teeth. When compared to Pseudoeurycea aquatica, P. papenfussi has shorter limbs and digits, a less depressed head, open nostrils (opposed to closed), and more maxillary teeth. Molecular features such as proteins and mtDNA sequences are also distinct (Parra-Olea et al. 2005).In life, P. papenfussi is a chestnut-brown ground color. The coloration is paler near the head and darker near the tail, which generally has a brighter reddish-brown hue. Dark brown-gray costal grooves extend to the pale tan venter, which has a light chestnut hue. When preserved in alcohol, Pseudoeurycea papenfussi is generally a rich golden brown color. Specimens are darkest on the dorsum, costal grooves, and grooves between muscles. Pigmentation of costal grooves extends noticeably to the mid-ventral region. A paler venter is marked with small brown spots and flecks. The head is less pigmented than the rest of the body, and the snout, upper and lower jaws margins, facial area, eyelids, and temporal areas have a pale cream coloration. The limbs are also light in coloration (Parra-Olea et al. 2005).Some living specimens of P. papenfussi have a similar marbled dorsal pattern to P. aquatica. Preserved specimens of P. papenfussi can have darker black and brown coloring on the back, and lighter coloring on the tail (Parra-Olea et al. 2005).The species authority is: Parra-Olea, G., García-París, M., Hanken, J. and Wake, D.B. 2005. Two new species of Pseudoeurycea (Caudata: Plethodontidae) from the Mountains of Northern Oaxaca, Mexico. Copeia: 461-469.Pseudoeurycea papenfussi and P. smithi are sister taxa (Parra-Olea et al. 2005).This species was named after Theodore J. Papenfuss, from the Museum of Vertebrate Zoology at UC Berkeley (Parra-Olea et al. 2005).

This species is endemic to the Sierra de Juárez mountain range in Oaxaca, Mexico, specifically near Cerro Pelón and Cerro Humo, to Cerro Peña Verde and the Pápalo region. Its habitat includes pine forests, barren rocky slopes, and regions near the peaks of mountains above the cloud forest. Specimens were found between the elevation ranges of 2800 to 2900 m, but could be at elevations as low as 2650 m (Parra-Olea et al. 2005).

Current population trends are unknown. The habitat for this species was significantly deforesting by unregulated logging but has since been recovering. Pseudoeurycea papenfussi may not be in decline but is close to being classified as Vulnerable by IUCN because of a restricted area of occurrence in its currently designated habitat. The Reserva de la Biósfera Tehuacán-Cuicatlán is where the species is known from (Hanken et al. 2008).

This salamander is a slow moving terrestrial species that is generally found at night on rock surfaces (often climbing these vertical surfaces when conditions are humid, misty, and/or rainy). Pseudoeurycea papenfussi has also been encountered when conditions are cold and/or windy (Parra-Olea 2005). It is presumed to reproduce by direct development. Population status is unclear but P. papenfussi has been thought to be uncommon in the area for quite some time (Hanken et al. 2008).

La salamandra escaladora (Pseudoeurycea papenfussi) és una espècie d'amfibi urodel (salamandres) de la família Plethodontidae. És endèmica de Mèxic.

Els seus hàbitats naturals inclouen boscos tropicals o subtropicals secs i zones rocoses. Està amenaçada d'extinció a causa de la destrucció del seu hàbitat.

The muscular salamander (Pseudoeurycea papenfussi) is a species of salamander in the family Plethodontidae. It is endemic to Mexico.

Its natural habitats are subtropical or tropical dry forests and rocky areas. It is threatened by habitat loss.

La salamandra escaladora (Pseudoeurycea papenfussi) es una especie de anfibio caudado (salamandras) de la familia Plethodontidae. Es endémica de México.

Sus hábitats naturales incluyen bosques tropicales o subtropicales secos y zonas rocosas. Está amenazada de extinción debido a la destrucción de su hábitat.

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Pseudoeurycea papenfussi Pseudoeurycea generoko animalia da. Anfibioen barruko Plethodontidae familian sailkatuta dago, Caudata ordenan.

Pseudoeurycea papenfussi est une espèce d'urodèles de la famille des Plethodontidae.

Pseudoeurycea papenfussi é uma espécie de salamandra da família Plethodontidae.

É endémica do México.

Os seus habitats naturais são: florestas secas tropicais ou subtropicais e áreas rochosas.

Está ameaçada por perda de habitat.

The Muscular Salamander hoặc Pseudoeurycea papenfussi (tên tiếng Anh: Salamandra Escaladora) là một loài kỳ giông trong họ Plethodontidae. Nó là loài đặc hữu của México.

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