Ampliaciones del rango de distribución de algunas especies de anfibios y reptiles en elsuroccidente de Ecuador

Abstract

We present new localities of four species of amphibians and reptiles from foothill and highAndean areas of the province of El Oro, southwestern Ecuador. These records significantly expand the global distributional ranges of Nymphargus buenaventura, Gastrotheca lateonata, Anolis lyra and Pliocercus euryzonus.

A new and very spiny lizard (Gymnophthalmidae:Echinosaura) from the Andes in northwestern Ecuador

“…The new species described in this paper occurs in a particular area of high endemism and biological diversification in extreme northwestern Ecuador. Therefore, we expect its occurrence in the neighboring country of Colombia, a distribution pattern observed in other species of small vertebrates ( Arteaga et al, 2016 ; Yánez-Muñoz et al, 2020 ; Brito et al, 2020 ; Reyes-Puig et al, 2020 ).…”

“…In extreme northwestern Ecuador, specifically in Carchi province near the national border with Colombia, important remnants of native vegetation are still preserved due to inaccessibility and local conservation initiatives. During the last six years, we have focused on the study and conservation of this important biodiversity area, discovering several new species and many candidate species of small vertebrates that are still awaiting formal description ( Yánez-Muñoz et al, 2018 , 2020 ; Reyes-Puig et al, 2020 ; Brito et al, 2020 ). Here, we describe a new species of Echinosaura recognized and delimited by a molecular phylogenetic analysis along with several types of morphological evidence, including cranial osteology.…”

New records of four reptile species (Lepidosauria, Squamata) from the province of Guayas, southwestern Ecuador

“…A fourth individual, which was not collected, was observed on a tree trunk during the day. Anolis lyra has been reported from the western slopes of the Cordillera Occidental from Colombia to extreme southwestern Ecuador (Poe et al 2009;Yánez-Muñoz et al 2014 (Fig. 2b) is distinguished from Boa imperator Daudin, 1803, the only other boid in its distribution range, by the following combination of characters: absence of nasals in contact; subcaudal scales 76-86 (47-69 in B. imperator); rows of dorsal scales 50-55 (56-79 in B. imperator); ventral scales 251-269 (225-253 in B. imperator); dorsum dusky red with round red spots with dark gray margins along the body, not contacting ventral scales (gray body with large spots in B. imperator); venter orange; eyes red; snout with thermoreceptive furrows in the corners of the lips (absent in B. imperator); anal plate divided (Henderson et al 2001; Rodríguez-Guerra 2019).…”

“…Although our knowledge of the diversity and natural history of reptiles in western Ecuador is limited, important herpetological discoveries have been made in recent years, such as new species and significant expansion of the geographic range extensions of previously recorded species (e.g. Jadin et al 2009;Cisneros-Heredia et al 2010;Ortega-Andrade et al 2010;Passos et al 2012;Torres-Carvajal et al 2012, 2015Ayala-Varela et al 2014;Yánez-Muñoz et al 2014Cisneros-Heredia and Romero 2015;Pyron et al 2015;Salazar-Valenzuela et al 2015;Cruz-García 2017;Cruz et al 2017;Arteaga et al 2017Arteaga et al , 2018Reyes-Puig et al 2019).…”