A
group of zoologists have discovered a new reptilian species hiding out in the
Chocoan forests in northwestern Ecuador. The discovery of the reptile, a
species of blunt-headed vine snake, was reported in the journal ZooKeys this week.
Blunt-headed vine snakes
live in Mexico and Argentina, and are a different from all other New World snakes because they have a very thin
body, slender neck, big eyes, and a blunt head. The snakes live in trees and
hunt frogs and lizards at night.
The new
species was named Imantodes chocoensis, bringing the number of species in this
group of snakes to seven.
Imantodes
chocoensis lack a big scale on their face that is present in all other
blunt-headed vine snakes from the New World. DNA evidence also shows that the
snakes actually belong to a new species.
DNA data also suggest that
Chocoensis’ closest relative is a species that inhabits the Amazon on the other side of the Andes.
“One possible explanation
for the disjunct distribution between the new species and its closest relative
is that the uplift of the Andes fragmented an ancestral population into two,
each of which evolved into a different species, one in the Chocó region and the
other in the Amazon,” Omar Torres-Carvajal from Museo de Zoología QCAZ, who led the study, said in a
statement.
Snakes
collected as far back as 1994, and deposited in several Ecuadorian and American
natural history museums were examined for the study to help determine whether
this was a newly discovered species.
The head of
the Chocoensis is about the size of a penny, according to the scientists. The
snake lives in the Chocoan forests, part of the Tumbes-Chocó-Magdalena hotspot
that lies west of the Andes.
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