Dryaderces

Dryaderces is a small genus of frogs in the family Hylidae. Their known distribution is disjunct, with one species found in the upper Amazon Basin and lower Andean slopes between central Peru and Amazonian Bolivia, and another one in Pará, Brazil. Its sister taxon is Osteocephalus. No phenotypic synapomorphies defining the genus are known.

Etymology

The generic name Dryaderces is derived from Ancient Greek dryad and aderces, thus meaning "unseen in a tree".

Dryaderces are medium-sized frogs; adult males can grow to and adult females to in snout–vent length. They are pond breeders. Males have only scattered, non-spinous tubercles on the dorsum. Females have smoother backs. Juvenile coloration resembles adult coloration.

There are two species:

Before Dryaderces was erected, these two species were placed in Osteocephalus. There is at least one undescribed species belonging to this genus.