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Description

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Thorius papaloae is a small salamander, with a pointed snout, large, elliptical nostrils, and moderately large eyes, which protrude slightly. Adult standard length averages 20.4mm (males) and 21.6mm (females). The head is relatively broad, and the tail is relatively long.Hanken and Wake (2003) describe Thorius papaloae as a "relatively dark species, with some indication of an obscure dorsal band in most individuals". Specimens with the lightest band have a herringbone pattern middorsally.The venter is dark, but lighter than the flanks, while the underside of the tail is particularly light. The gular region has many white spots. The species has no maxillary teeth. As for osteology: the skull is poorly ossified, even compared to other species of Thorius. The premaxilla generally bears teeth, while the nasal bone is thin and rod-like. Prefrontal and maxilla are separate. The species has 14 presacral vertabrae, all but the last of which typically bear ribs. Recognition of Thorius papaloae as a new species is justified on account of genetic differentiation from other named species, substantial geographic distance from populations of its nearest congeners, and subtle morphological features (Hanken and Wake 2001).

All information for this account comes from "A Seventh Species of Minute Salamander (Thorius: Plethodontidae) From the Sierra Juárez, Oaxaca, México" (Hanken and Wake 2001).

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Distribution and Habitat

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Thorius papaloae is only known to live at the northwestern edge of the Sierra Madre in north-central Oaxaca, México, to the northeast of the village of Concepción Pápalo. The dominant habitat is pine and pine-oak forest, between elevations of 2500 and 2850m. The species can be found beneath cover objects on the forest floor, and beneath the bark of fallen logs, often in moist microhabitats on north-facing wooded slopes (Hanken and Wake 2001).

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Thorius papaloae

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Thorius papaloae, commonly known as the Papalo minute salamander, is a species of salamander in the family Plethodontidae. It is endemic to Mexico and only known from one locality near the village of Concepción Pápalo in Sierra Juárez, Oaxaca.[1][2]

Its natural habitats are pine forests and cloud forests, where it is living under logs and stones, and in leaf-litter. Despite its small range, it is not particularly rare. However, its habitat is under threat from habitat loss caused by logging, human settlement, and cultivation of crops.[1]

References

  1. ^ a b c IUCN SSC Amphibian Specialist Group (2015). "Thorius papaloae". IUCN Red List of Threatened Species. IUCN. 2015: e.T59423A53987090. doi:10.2305/IUCN.UK.2015-4.RLTS.T59423A53987090.en.
  2. ^ Frost, Darrel R. (2015). "Thorius papaloae Hanken and Wake, 2001". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 24 December 2015.
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Thorius papaloae: Brief Summary

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Thorius papaloae, commonly known as the Papalo minute salamander, is a species of salamander in the family Plethodontidae. It is endemic to Mexico and only known from one locality near the village of Concepción Pápalo in Sierra Juárez, Oaxaca.

Its natural habitats are pine forests and cloud forests, where it is living under logs and stones, and in leaf-litter. Despite its small range, it is not particularly rare. However, its habitat is under threat from habitat loss caused by logging, human settlement, and cultivation of crops.

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