Oaxacan cloud-forest tree frog

Adult males measure 53–62 mm (2.1–2.4 in) and adult females 60–81 mm (2.4–3.2 in) in snout–vent length. The body is slender. The snout is rounded. The tympanum is distinct and rounded but dorsally obscured by the thick supra-tympanic fold. The fingers and the toes are long, slender, and partially webbed, bearing large terminal discs (slightly smaller in the fingers than in the toes). Dorsal skin is smooth. Coloration is sexually dimorphic: females have reddish brown ground color, whereas that of males gray-brown to mauve. Both sexes have large, irregular blotches on the dorsum. The blotches are usually greenish and bordered with dark brown, but are sometimes uniformly dark brown in some large males. The limbs have dark crossbars. The iris varies from pale copper to bronze and has fine black reticulations.

Charadrahyla nephila inhabits mesic cloud forests at elevations of 680–2,256 m (2,231–7,402 ft) above sea level. It is commonly found in or near streams and low vegetation. Breeding presumably takes place in streams. It is nocturnal. Charadrahyla nephila is a common species, but its habitat is suffering from a high degree of disturbance. Tadpoles have been found with symptoms indicative of chytridiomycosis, representing an additional threat. It is not known to occur in any protected area.

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