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Description

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Lineatriton lineolus is a very slender salamander that is found primarily on dry land. The species can grow up to 38 mm SVL and 128 mm TL. In adult individuals, the tail is cylindrical and usually twice as long as the body and head. The front and forelimbs are short, with partially webbed hands and feet. This species has a rounded snout and stalked tongue.

L. lineolus can be distinguished from other wormlike salamanders by the long, narrow vertebrae it has. In all, the body contains fifteen elongated vertebrae.

This species is usually a dull black, with paler coloration marking the sides, (Dunn 1926) although Shannon and Werler (1955) have documented living specimens that were uniformally lead gray (Tanner and Dundee, 2000).

Etymology:

Lineatriton comes from the Latin words "linea," which literally translates as "feminine," and "triton," the name of the Roman sea god. "Linea" refers to the slender appearance of the salamander. The species name, lineola, is also from "linea," but in this context, it refers to the thin vertebral line some individuals have (Tanner and Dundee 2000).

References

  • Pelcastre-Villafuerte, L. and Flores-Villela, O. A. (). ''Lista de especies y localidades de recolecta de la herpetofauna de Veracruz, Mexico.'' Publication Espec. Museum Zoology Fac. Ciencias Universidad Nacional Autonoma de Mexico, (), -.
  • Shannon, F .A. and Werler, J. E. (). ''Notes on amphibians of the Los Tuxtlas Range of Veracruz, Mexico.'' Transactions of the Kansas Academy of Science, , -.
  • Tanner, W. W. and Dundee, H. A. (). ''Lineatriton, L. lineolus.'' Catalogue of American Amphibians and Reptiles. Society for the Study of Amphibians and Reptiles, .-..

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Distribution and Habitat

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L. lineolus can only be found in perennial evergreen tropical forests in central Veracruz, Mexico (Pelcastre-Villafuerte and Flores-Villela 1992). Although the distribution of this species is below the cloud forests, it extends up to 1250 m. These areas recieve the most precipitation in Veracruz. Within these habitats, L. lineolus is found under stones, leaves, and trash on plantations, as well as in rotten logs (Tanner and Dundee 2000).

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Pseudoeurycea lineola

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Pseudoeurycea lineola, commonly known as the Veracruz worm salamander or Mexican slender salamander, is a species of salamander in the family Plethodontidae. It is endemic to the Sierra Madre Oriental near Cuautlapan, in the east-central Veracruz, Mexico, at elevations of 800–1,250 m (2,620–4,100 ft) above sea level.[1][2] Molecular evidence suggests that it consists of two distinct species.[2] It was the type species of genus Lineatriton.[3]

Description

Males measure 35–43 mm (1.4–1.7 in) and females 34–44 mm (1.3–1.7 in) in snout–vent length. The average tail length is 71 and 73 mm (2.8 and 2.9 in) for males and females, respectively. The males have white (unpigemented) testes and vasa deferentia.[4]

Habitat and conservation

Natural habitats of Pseudoeurycea lineola are pine-oak forests, but it can also survive in shaded coffee plantations. It is a terrestrial species found beneath stones, logs and other debris, and in subterranean situations. The species is threatened by habitat loss caused by expanding agriculture and human settlements and by wood extraction. It is an uncommon species that is difficult to find.[1]

References

  1. ^ a b c Gabriela Parra-Olea, David Wake, Jean Raffaelli, James Hanken, Mario García-París (2008). "Pseudoeurycea lineola". IUCN Red List of Threatened Species. 2008: e.T59289A11899372. doi:10.2305/IUCN.UK.2008.RLTS.T59289A11899372.en.CS1 maint: uses authors parameter (link)
  2. ^ a b Frost, Darrel R. (2016). "Pseudoeurycea lineola (Cope, 1865)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 14 May 2016.
  3. ^ Tanner, W. W. (1950). "A new genus of plethodontid salamander from Mexico". Great Basin Naturalist. 10: 37–44. doi:10.5962/bhl.part.10363.
  4. ^ Brodie, E. D., Jr.; Mendelson, J. R. III; Campbell, J. A. (2002). "Taxonomic revision of the Mexican plethodontid salamanders of the genus Lineatriton, with the description of two new species". Herpetologica. 58 (2): 194–202. doi:10.1655/0018-0831(2002)058[0194:TROTMP]2.0.CO;2. JSTOR 3893194.
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Pseudoeurycea lineola: Brief Summary

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Pseudoeurycea lineola, commonly known as the Veracruz worm salamander or Mexican slender salamander, is a species of salamander in the family Plethodontidae. It is endemic to the Sierra Madre Oriental near Cuautlapan, in the east-central Veracruz, Mexico, at elevations of 800–1,250 m (2,620–4,100 ft) above sea level. Molecular evidence suggests that it consists of two distinct species. It was the type species of genus Lineatriton.

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