Juan Camilo Arredondo

University CES | CES · Facultad de Ciencias y Biotecnología / CBUCES

Morphological stasis is generally associated with relative constancy in ecological pressures throughout time, producing strong stabilizing selection that retains similar shared morphology. Although climate and vegetation are commonly the main key factors driving diversity and phenotypic diversification in terrestrial vertebrates, fossorial organism...

South American racers of the tribe Philodryadini are a widespread and diverse group of Neotropical snakes with a complex taxonomic and systematic history. Recent studies failed to present a robust phylogenetic hypothesis for the tribe, mainly due to incomplete taxon sampling. Here we provide the most extensive molecular phylogenetic analysis of Phi...

It corrects the article: http://doi.org/10.11606/1807-0205/2020.60.53

Los métodos complementarios de monitoreo pasivo pueden ayudar a estudiar aspectos de especies poco conocidas o difíciles de registrar. Por ejemplo, la familia Grallariidae incluye una gran diversidad taxonómica en Colombia, pero al habitar el sotobosque denso y ser muy elusivas resultan difícilmente observadas y el conocimiento de su comportamiento...

[This corrects the article DOI: 10.1371/journal.pone.0216148.].

Caenophidian snakes include the file snake genus Acrochordus and advanced colubroidean snakes that radiated mainly during the Neogene. Although caenophidian snakes are a well-supported clade, their inferred affinities, based either on molecular or morphological data, remain poorly known or controversial. Here, we provide an expanded molecular phylo...

Typhlopidae is the most diverse family of Scolecophidia, with 269 species. Amerotyphlops was recently erected within subfamily Typhlopinae and comprises fifteen species distributed from Mexico to Argentina and the southern Lesser Antilles. Despite recent advances, affinities among typhlopines remain poorly explored, and the phylogenetic relationshi...

On the basis of morphological and molecular evidence, we describe a new species of lizard of the genus Pholidobolus, previously conflated with P. vertebralis, from a paramo ecosystem in the northern Cordillera Central of Colombia. Our results support the recognition of the new species and suggest it is not closely related to P. vertebralis. Morphol...

We describe a new species of Philodryas from the highlands of southern Ecuador. The new species is distinguished from all known species of Philodryas by a unique combination of coloration, scalation, and hemipenial characters. The new species resembles Philodryas simonsii in color pattern. However, they differ notoriously by their hemipenial morpho...

Effective and targeted conservation action requires detailed information about species, their distribution, systematics and ecology as well as the distribution of threat processes which affect them. Knowledge of reptilian diversity remains surprisingly disparate, and innovative means of gaining rapid insight into the status of reptiles are needed i...

A new Colombian species of gymnophthalmid lizard is described from Porce River piedmont, in the northern region of the Cordillera Central of Colombia. The new species is allocated in the Anadia bitaeniata group and represents the westernmost member of the group. This species is distinguished primarily by the sub-hexagonal dorsal scales, large quadr...

A new species of blindsnake is described from the gallery forests of the Brazilian Cerrado. The new species differs from all other known Brazilian species of Leptotyphlopidae by a combination of scale counts, the shape of the snout in lateral view, and color pattern. The new species most closely resembles Epictia tenella, from which it can be disti...

Threadsnakes of the tribe Epictini are endemic to the New World, occurring from the United States to Argentina, mostly in the Neotropical region. Currently, the taxonomic status of most species is unclear and there has been no previous attempt of a comprehensive taxonomic revision of Neotropical taxa. Taxonomy of the group is a difficult task due t...

Una nueva especie endémica de lagarto gymnophthalmido del género Riama es descrita para el norte de la Cordillera Occidental en Colombia. La nueva especie se diferencia de todas las especies conocidas de Riama por folidosis, morfología hemipenial y patrón de coloración. Las cuatro especies endémicas de Colombia, Riama columbiana, Riama laevis, Riam...

Se identifica Ochetosoma heterocoelium Travassos, 1921 como un parásito de importancia veterinaria en ofidios de diferentes localidades de Colombia y se redescribe con base en las características morfológicas de individuos juveniles y adultos. La carga parasitaria de O. heterocoelium varió de 3-207 individuos alojados en la cavidad bucal de los ofi...

Three new species of Atractus are described from the northern Cordillera Central of Colombia. The new species, previously confused with older names, are easily distinguished from any currently recognized Atractus by unique combinations of morphological characters. Additionally, we provide comments on the Atractus diversity and distribution pattern...

Atractus wagleri was described based on a single specimen from Humbo, Department of Boyacá on the western Cordillera Oriental of Colombia, and since its original description there is no further record for the species. In the course of examination of Colombian collections the holotype of the Atractus wagleri could not be found and it is probable tha...

On 26-27 October 2005 were captured two individuals of the lizard L. southi at the Hacienda Santa Bárbara (ca. 06°32’N / 74º38’W, between 515-575 m above sea level), vereda Las Brisas, Maceo municipality, Department of Antioquia. Both specimens were collected on litterfall in the morning, inside secondary forest. These lizards represent the first d...

This is the first report of Anolis mariarum in the diet of Imantodes cenchoa throughout their distribution in Colombia.