Mixcoatlus melanurus
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SPECIES
Mixcoatlus melanurus

Mixcoatlus melanurus is a venomous pitviper species endemic to the mountains of southern Mexico. No subspecies are currently recognized.

Appearance

Adults grow to between 37.5 and 50 centimetres (14+3⁄4 and 19+5⁄8 inches) in length and have a moderately stout build. In Mexico is called necazcoatl from nahualt the words necaztli and coatl which means "earred-serpent"referring to its "horns".

Distribution

Geography

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Biogeographical realms

It is found in two Mexican states, southern Puebla and Oaxaca, at elevations of 1,600–2,400 m (5,200–7,900 ft). The type locality given is "Mexico."

Habits and Lifestyle

Terrestrial.

Lifestyle

Population

Population number

This species is classified as Endangered (EN) on the IUCN Red List of Threatened Species with the following criteria: B1ab(iii) (v3.1, 2001). A species is listed as such when the best available evidence indicates that the geographic range, in the form of extent of occurrence, is estimated to be less than 5,000 km2 (1,900 sq mi), that estimates indicate it to be severely fragmented or known to exist at no more than 5 locations, and that a continuing decline has been observed, inferred or projected, in area, extent and/or quality of habitat. It is therefore considered to be facing a very high risk of extinction in the wild. In 2007 when it was last assessed, the population trend was down.

References

1. Mixcoatlus melanurus Wikipedia article - https://en.wikipedia.org/wiki/Mixcoatlus_melanurus
2. Mixcoatlus melanurus on The IUCN Red List site - https://www.iucnredlist.org/species/64340/12772134

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