Bradytriton

Bradytriton is a monotypic genus of salamanders in the family Plethodontidae.[1][3] it is represented by the species Bradytriton silus, commonly known as the Finca Chiblac salamander,[4] and has been considered the sister taxon of the genus Oedipina.[5] It is found in north-western Guatemala and in Chiapas, south-eastern Mexico.[3]

Bradytriton
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Urodela
Family: Plethodontidae
Subfamily: Hemidactyliinae
Genus: Bradytriton
Wake and Elias, 1983[2]
Species:
B. silus
Binomial name
Bradytriton silus
Wake and Elias, 1983[2]

Description

Adult males measure 39–53 mm (1.5–2.1 in) and adult females 49–53 mm (1.9–2.1 in) in snout–vent length. The body is stocky. The head is relatively broad and essentially continuous with the body. The tail is short and laterally compressed, appearing stout when viewed from the side. The limbs are short and slender with diminutive digits that are, apart from their tips, fused together. Dorsal coloration is reddish brown. The head is mostly black and there are black flecks on the anterior part of the body. The cheeks, sides of the tail, and lower flanks are black with dense white flecks.[2]

Habitat and conservation

In north-western Guatemala, Bradytriton silus is known from both disturbed and undisturbed wet forest at an elevation of about 1,310 m (4,300 ft) above sea level. Specimens were found under pieces of wood and logs. Development is presumably direct (i.e., no free-living larval stage) and not dependent on water.[1]

The area of the type locality is subject to severe habitat loss caused by the settlement of refugees and expanding agriculture; the species has not been recorded there after 1976, despite later searches.[1] However, another population was reported from Chiapas, Mexico in 2015.[3]

gollark: Cool idea: multivalued functions?
gollark: By induction, repeatedly adding some small change δ only changes the values by insignificant amounts, so it's 0 for all inputs.
gollark: You see, sin 0 = tan 0 = 0, and for any small change δ from 0 the value of sin δ and tan δ are both less than some ε which is really small, so we can ignore it.
gollark: cos x = 1, sin x = tan x = 0, actually.
gollark: Instead of calling arcsin inelegantly, it should instead just iterate through the infinite set of the function's outputs.

References
  1. IUCN SSC Amphibian Specialist Group. (2020). "Bradytriton silus". IUCN Red List of Threatened Species. 2020: e.T59220A54376751. Retrieved 12 July 2020.
  2. Wake, David B. & Elias, Paul (1983). "New genera and a new species of Central American salamanders, with a review of the tropical genera (Amphibia, Caudata, Plethodontidae)". Contributions in Science, Natural History Museum of Los Angeles County. 345: 1–19.
  3. Frost, Darrel R. (2019). "Bradytriton silus Wake and Elias, 1983". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 14 February 2019.
  4. "Plethodontidae". AmphibiaWeb. University of California, Berkeley. 2019. Retrieved 14 February 2019.
  5. Frost, Darrel R. (2019). "Bradytriton Wake and Elias, 1983". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 14 February 2019.
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