Nymphargus

Abstract: We describe a new species of glassfrog assigned to the genus Cochranella (Amphibia: Anura: Athesphatanura: Centrolenidae) from the Foothill Evergreen forests on the southeastern Andean slopes of Ecuador and northeastern Andean slopes of Peru. The new species is characterized by its moderate-sized body (25.4–26.9 mm in adult males), medium-sized eyes (eye diameter/third disc width = 1.4–1.9), distinctive coloration in life (olive green with light spots) and in preservative (grayish lavender with pale spots), dorsal skin covered with flat warts and low tubercles, parietal peritoneum mostly white (covered by iridophores), thick ulnar folds, and extensive hand and foot webbing. In addition, we provide the first record of Nymphargus posadae from Peru, found in sympatry with the new species at the Cordillera del Condor.

Abstract: A new species of Glassfrog of the genus Nymphargus from the Andean cloud forest of Cordillera Oriental, Colombia, is described. This species can be recognized by some morphological characteristics that include: parietal peritoneum 1/2–3/4 white, visceral and hepatic peritonea translucent; webbing on hand reduced between outer fingers; and males lacking humeral spine. The new species reported herein is close related with Nymphargus garciae of the Central Andes and is added to the 20 previously known species of the family that occur in the eastern Andes of Colombia. Moreover, it is the northernmost record for the genus in the Cordillera Oriental.

Abstract: . Thirty species of the glassfrogs genus Nymphargus, including a new species, are known to inhabit the cloud forest of the Andes of Colombia and Ecuador. Four of these species (Nymphargus anomalus, N. ignotus, N. rosada, and the new species) are unusual by having a tan-brown dorsal coloration instead of the widespread green coloration commonly found in glassfrogs. Herein, we review tan-brown glassfrogs species, providing information on their external morphology, color ontogeny, ecology, and distribution. The new taxon inhabits the Andes of southwestern Colombia, Departamento del Cauca, and it is distinguished from other centrolenids by having a tan-brown dorsum with dark spots lacking ocelli, reduced (basal) webbing between outermost fingers, and lacking iridophores on the digestive tract and hepatic peritonea. We also find that Nymphargus ignotus is a polymorphic species distributed along the western flank of the Cordillera Occidental in Colombia. The egg masses of N. ignotus are similar to those...

Abstract: I describe a new glassfrog from the cloud forest of the Andes of southwestern Ecuador (Plan de Milagro-Gualaceo road; 3.0077°S, 78.53318°W), at elevations between 2140-2160 m. The new species is distinguished mostly by having a pale yellow dorsal coloration instead of the green that characterizes most centrolenids. Morphological traits (i.e., reduced webbing between Fingers III and IV and lack of humeral spines) support the placement of the new species in the genus Nymphargus.