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  1. Article ; Online: Finding a shadow in the dark

    Ross J. Maynard / Jaime Culebras / Sebastian Kohn / Juan M. Guayasamin / Scott J. Trageser

    Check List, Vol 17, Iss 1, Pp 239-

    rediscovery of Fugler’s Shadow Snake (Emmochliophis fugleri Fritts & Smith, 1969) after 54 years, with comments on its conservation status, distribution, and the tribe Diaphorolepidini

    2021  Volume 245

    Abstract: 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 ... ...

    Abstract 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.
    Keywords Critically Endangered ; Ecuador ; Imbabura ; Río Mand ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2021-02-01T00:00:00Z
    Publisher Pensoft Publishers
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Phylogenetic position of “Cochranella” megista (Anura

    Scott J. Trageser / Ross J. Maynard / Jaime Culebras / Sebastian Kohn / Amanda Quezada / Juan M. Guayasamin

    Phyllomedusa: Journal of Herpetology, Vol 20, Iss

    Centrolenidae) and first records for Ecuador

    2021  Volume 1

    Abstract: 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 ... ...

    Abstract “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.
    Keywords Amphibians ; Conservation ; Greater Andean Glassfrog ; Nymphargus ; Río Manduriacu Reserve ; Threatened species ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2021-06-01T00:00:00Z
    Publisher Universidade de São Paulo
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Two new glassfrogs (Centrolenidae

    Juan M. Guayasamin / Rebecca M. Brunner / Anyelet Valencia-Aguilar / Daniela Franco-Mena / Eva Ringler / Anderson Medina Armijos / Carlos Morochz / Lucas Bustamante / Ross J. Maynard / Jaime Culebras

    PeerJ, Vol 10, p e

    Hyalinobatrachium) from Ecuador, with comments on the endangered biodiversity of the Andes

    2022  Volume 13109

    Abstract: 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 ... ...

    Abstract 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 ...
    Keywords Andes ; Amphibia ; Conservation ; Cryptic diversity ; Mining ; Ecuador ; Medicine ; R ; Biology (General) ; QH301-705.5
    Subject code 590
    Language English
    Publishing date 2022-03-01T00:00:00Z
    Publisher PeerJ Inc.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: A new species of Noblella (Amphibia

    Carolina Reyes-Puig / Ross J. Maynard / Scott J. Trageser / José Vieira / Paul S. Hamilton / Ryan Lynch / Jaime Culebras / Sebastián Kohn / Jorge Brito / Juan M. Guayasamin

    Neotropical Biodiversity, Vol 6, Iss 1, Pp 162-

    Strabomantidae) from the Río Manduriacu Reserve on the Pacific slopes of the Ecuadorian Andes

    2020  Volume 171

    Abstract: 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 ... ...

    Abstract 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 ...
    Keywords western andean slopes ; terrestrial frog ; phylogeny ; conservation ; Ecology ; QH540-549.5 ; General. Including nature conservation ; geographical distribution ; QH1-199.5
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Taylor & Francis Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: A marvelous new glassfrog (Centrolenidae, Hyalinobatrachium) from Amazonian Ecuador

    Juan M. Guayasamin / Diego F. Cisneros-Heredia / Ross J. Maynard / Ryan L. Lynch / Jaime Culebras / Paul S. Hamilton

    ZooKeys, Vol 673, Iss , Pp 1-

    2017  Volume 20

    Abstract: 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 ... ...

    Abstract 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.
    Keywords Zoology ; QL1-991
    Language English
    Publishing date 2017-05-01T00:00:00Z
    Publisher Pensoft Publishers
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: A new glassfrog (Centrolenidae) from the Chocó-Andean Río Manduriacu Reserve, Ecuador, endangered by mining

    Juan M. Guayasamin / Diego F. Cisneros-Heredia / José Vieira / Sebastián Kohn / Gabriela Gavilanes / Ryan L. Lynch / Paul S. Hamilton / Ross J. Maynard

    PeerJ, Vol 7, p e

    2019  Volume 6400

    Abstract: 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 ...

    Abstract 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 genus Nymphargus. We present a new mitochondrial phylogeny of Nymphargus and 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.
    Keywords Taxonomy ; Conservation ; Glassfrog ; Endangered ; Mining ; Amphibia ; Medicine ; R ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2019-02-01T00:00:00Z
    Publisher PeerJ Inc.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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