We describe a new glassfrog from Río Manduriacu Reserve, Imbabura Province, on the Pacific slopes of the Ecuadorian Andes. The new species can be distinguished from most other glassfrogs by having numerous yellow spots on the dorsum and lacking membranes among fingers. Both morphological and molecular data support the placement of the species in the genusNymphargus. We present a new mitochondrial phylogeny ofNymphargusand discuss the speciation patterns of this genus; most importantly, recent speciation events seem to result from the effect of the linearity of the Andes. Finally, although the new species occurs within a private reserve, it is seriously endangered by mining activities; thus, following IUCN criteria, we consider the new species as Critically Endangered.

The impact of roads on the flora and fauna of Neotropical rainforest is perhaps the single biggest driver of habitat modification and population declines in these ecosystems. We investigated the road-edge effect of a low-use dirt road on amphibian and reptile abundance, diversity, and composition within adjacent lowland Amazonian rainforest at San José de Payamino, Ecuador. The road has been closed to vehicle traffic since its construction in 2010. Thus, effects from vehicle mortality, vehicle-related pollution, and road noise were not confounding factors. Herpetofauna were surveyed using both visual encounter surveys and drift fences with pitfall and funnel traps at varying distances from the road. Structural and microclimate features of the forest were measured at each sampling distance. Several habitat variables were found to differ at intermediate and interior sampling distances from the road compared to forest edge conditions, suggesting the road-edge effect began to attenuate by the intermediate sampling distance. However, the edge effect on amphibians and reptiles appeared to extend 100 m from the road edge, as abundance and diversity were significantly greater at the interior forest compared to the forest edge. Additionally, assemblage composition as well as the hierarchical position of species shifted between sampling distances. Habitat predictor models indicate that amphibian abundance was best predicted by vine abundance, while both vine and mature tree abundance were the best predictors for species richness and diversity. Overall, and contrary to what might otherwise be expected, our results demonstrate that small, little-used road disturbances can nonetheless have profound impacts on wildlife.Key words: edge effects, herpetofauna, roads, Neotropical, amphibians, reptiles Resumen El impacto de carreteras sobre la flora y fauna de selvas es quizás el conductor más grande de la modificación de habitat y dismiución de poblaciones. Investigamos el effecto "orilla de la carretera" en una carretera de tierra de baja utilización sobre la abundancia, diversidad, e composición de anfibios y reptiles en la selva baja Amazónico en la vecindad de San José de Payamino, Ecuador. La carretera ha sido abandonado de traffico vehicular desde su construcción en 2010, así effectos de mortalidad de vehículo, polución relacionada con vehículos, e ruido de carretera no era probable factores de confusión. La herpetofauna fue muestrada usando encuentro visual e cercas de desvío con trampas de caída e embudo a diferentes distancias del carretera. Características de estructura e microclima fueron medidas en cada lugar. Varios variables de habitat se encontraban a diferir a distancias de muestreo intermedios e interiores de la carretera a el bosque, comparada a condiciónes de la orilla del bosque. Lo que sugiere es que el effecto "orilla de la carretra" empezo a atenuar deste la distancia de muestra intermedia de la carretera a el bosque. Sin embargo, el effecto de la "orilla de la carretera" sobre la herpetofauna apare...

Hyalinobatrachium is a behaviorally and morphologically conserved genus of Neotropical anurans, with several pending taxonomic problems. Using morphology, vocalizations, and DNA, a new species from the Amazonian lowlands of Ecuador is described and illustrated. The new species, Hyalinobatrachium yaku sp. n., is differentiated from all other congenerics by having small, middorsal, dark green spots on the head and dorsum, a transparent pericardium, and a tonal call that lasts 0.27–0.4 s, with a dominant frequency of 5219.3–5329.6 Hz. Also, a mitochondrial phylogeny for the genus is presented that contains the new species, which is inferred as sister to H. pellucidum. Conservation threats to H. yaku sp. n. include habitat destruction and/or pollution mainly because of oil and mining activities.

Background The Tropical Andes is the world’s most biodiverse hotspot. This region contains >1,000 amphibian species, more than half of which are endemic. Herein we describe two new glassfrog species (Centrolenidae: Hyalinobatrachium) that we discovered within relatively unexplored and isolated localities of the Ecuadorian Andes. Methods We employed morphological, acoustic, and molecular methods to test the hypothesis that Hyalinobatrachium mashpi sp. nov and H. nouns sp. nov. are species new to science. Following standard methods, we generated mitochondrial sequences (16S) of 37 individuals in the genus Hyalinobatrachium. We inferred the phylogenetic relationships of the two new species in comparison to all other glassfrogs using Maximum Likelihood. In addition to describing the call of H. mashpi sp. nov., we performed a discriminant analysis of principal components (DAPC) with the advertisement call characteristics of several congeners. Results Based on an integrative taxonomy approach, we describe two new species. Morphological traits and the inferred phylogeny unambiguously place the new taxa in the genus Hyalinobatrachium. Both species are distinguished from other glassfrogs mainly by their dorsal coloration (i.e., dorsum lime green with small light yellow spots, head usually with interorbital bar) and transparent pericardium (i.e., the heart is visible through the ventral skin). The new species exhibit a high morphological similarity (i.e., cryptic) and occur within relatively close geographical proximity (closest aerial distance = 18.9 km); however, their uncorrected p distance for the mitochondrial gene 16S is 4.6–4.7%, a value that greatly exceeds the genetic distance between closely related species of centrolenid frogs. The DAPC revealed that the advertisement call of H. mashpi sp. nov. is acoustically distinct. Discussion Our findings are congruent with several previous studies that report a high degree of endemism in the Toisán mountain range, which appears to be isolated from the main Andean cordillera for some amphibian groups. We recommend that both H. mashpi sp. nov. and H. nouns sp. nov. be listed as Endangered, following IUCN criteria. These new species provide another example of cryptic diversity in the Andes—further evidence that the region fosters much more biodiversity than we have the resources to catalog. Threatened by mining and other exploitative industries, these glassfrogs and many other yet-to-be-discovered Andean species highlight the dire need for effective conservation measures—especially in northwestern Ecuador.

With the third most biodiverse amphibian fauna in the world, Ecuador has bolstered this claim with a particularly high rate of species descriptions in recent years. Many of the species being described are already facing anthropogenic threats despite being discovered within privately protected reserves in areas previously not sampled. Herein we describe a new species of terrestrial frog in the genus Noblella from the recently established Río Manduriacu Reserve, Imbabura, Ecuador. Noblella worleyae sp. nov. differs from its congeners by having a dorsum finely shagreen; tips of Fingers I and IV slightly acuminate, Fingers II and III acuminate, without papillae; distal phalanges of the hand slightly T-shaped; absence of distinctive suprainguinal marks; venter yellowish-cream with minute speckling and throat with irregular brown marks to homogeneously brown. We provide a detailed description of the advertisement call of the new species and present an updated phylogeny of the genus Noblella. In addition, we emphasize the importance of the Río Manduriacu Reserve as a conservation area to threatened fauna.Ecuador es el tercer país más diverso en anfibios, y la descripción de especies en los últimos años ha aumentado considerablemente, evidenciando la presencia de nuevas especies en áreas privadas protegidas, muchas de las cuales enfrentan amenazas antropogénicas. Aquí describimos una nueva especie de rana terrestre del género Noblella de la vertiente pacífica de los Andes ecuatorianos en la Reserva Río Manduriacu, provincia de Imbabura. Noblella worleyae sp. nov. se diferencia de sus congéneres por la presencia de un dorso finamente granular, puntas de los dedos I y IV ligeramente acuminados, dedos II y III acuminados, sin papila; falanges distales de la mano ligeramente en forma de T; ausencia de marcas distintivas suprainguinales; vientre crema amarillento moteado con diminutos puntos ,garganta con marcas cafés irregulares a homogéneamente café. Proporcionamos una descripción detallada del canto de la nueva especie y presentamos una filogenia actualizada del género Noblella. Además, enfatizamos la importancia de la Reserva Río Manduriacu como un área de conservación para fauna amenazada.

Herein we report the second known record of Emmochliophis fugleri Fritts & Smith, 1969, present the first color images of the species, extend its known distribution and elevational range, provide the snout–vent and tail lengths of the holotype, and demonstrate that the condition of fused prefrontals is an unreliable diagnostic character for the genus Diaphorolepis. Considering the rarity of this snake as well as the imminent threat that mining poses to the Río Manduriacu Reserve, we recommend a conservation status of Critically Endangered for E. fugleri. 

“Cochranella” megista is an Endangered and rarely encountered species of glass frog that, until now, had been only registered in the Colombian Andes. Here we report this species for the first time in Ecuador, expanding its known distribution ca. 530 km south of its original range. Additionally, we include C. megista in a molecular phylogeny for the first time and unambiguously place the species in the genus Nymphargus, resulting in a new combination. Habitat in both countries is fragmented and is threatened by mining concessions and agriculture.