Hyalinobatrachium valerioi

It is found in central Costa Rica and south to Panama and the Pacific lowlands and slopes of western Colombia and Ecuador; also in the Magdalena River Valley of Colombia (Colombian distribution is poorly resolved).

The ventral surface is transparent, however the heart is covered by white tissue and is not visible.

Adult frogs are typically found in bushes and trees along forest streams.

The species tolerates some habitat modification, provided that vegetation over streams remains.

Habitat loss (deforestation) is a significant threat, as is pollution from the spraying of illegal crops.