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Juan Guayasamin
The University of Kansas, United States of America
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5 articles by this author

Research Article
 
Systematics of South American snail-eating snakes (Serpentes, Dipsadini), with the description of five new species from Ecuador and Peru
Alejandro Arteaga, David Salazar-Valenzuela, Konrad Mebert, Nicolás Peñafiel, Gabriela Aguiar,     Juan C. Sánchez-Nivicela, R. Alexander Pyron, Timothy J. Colston,     Diego F. Cisneros-Heredia, Mario H. Yánez-Muñoz, Pablo J. Venegas, Juan M. Guayasamin, Omar Torres-Carvajal
10.3897/zookeys.766.24523
 14-06-2018
 Unique: 4987 | Total: 8619
 Reprint: € 20,20
 79-147
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Research Article
 
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
10.3897/zookeys.673.12108
 12-05-2017
 Unique: 10212 | Total: 18019
 Reprint: € 5,90
 1-20
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Research Article
 
Molecular phylogeny of Atractus (Serpentes, Dipsadidae), with emphasis on Ecuadorian species and the description of three new taxa
Alejandro Arteaga, Konrad Mebert, Jorge H. Valencia,     Diego F. Cisneros-Heredia, Nicolás Peñafiel,     Carolina Reyes-Puig, José L. Vieira-Fernandes, Juan M. Guayasamin
10.3897/zookeys.661.11224
 15-03-2017
 Unique: 3352 | Total: 8431
 Reprint: € 10,50
 91-123
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Research Article
 
Systematics of Nothopsini (Serpentes, Dipsadidae), with a new species of Synophis from the Pacific Andean slopes of southwestern Ecuador
Robert Pyron, Juan Guayasamin, Nicolas Peñafiel, Lucas Bustamante, Alejandro Arteaga
10.3897/zookeys.541.6058
 01-12-2015
 Unique: 3547 | Total: 7097
 Reprint: € 11,20
 109-147
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Research Article
 
A new species of Andean toad (Bufonidae, Osornophryne) discovered using molecular and morphological data, with a taxonomic key for the genus
Diego Paez, Juan Guayasamin, Mario Yanez
10.3897/zookeys.108.1129
 17-06-2011
 Unique: 6727 | Total: 8871
 Reprint: € 8,40
 73-97
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