Hyloscirtus
- Dispersed Stream Frog Hyloscirtus dispersus
The preserved adult male has a head slightly longer than wide, a slender body and a snout rounded from above but slightly flat at the tip from the side. Its forearms are slender; the fingers have skin fringes and rounded discs at their tips. The back and sides are smooth, while the belly is finely granular. It lives in hillside forest and is often found in secondary forest and open areas created by people. It is nocturnal and associated with running streams and ravines. Males call while perched on plants beside streams. It is known from more than 25 places along Ecuador's eastern Andean slopes, from north to south.
- Elbakyan Stream Frog Hyloscirtus elbakyanae
The preserved adult male has a head wider than it is long, a slender body and a snout rounded from above and from the side. Its forearms are slender; the fingers have skin fringes and rounded discs at their tips. The back and sides are smooth, while the belly has granular skin. It lives in hillside forest and is nocturnal. It has been found in shrub-covered ravines beside torrents and streams. It calls from under rocks in streams with little water and also from cracks. It is known from near Comunidad Shaime in Morona Santiago Province, Ecuador.
- Maycu Stream Frog Hyloscirtus maycu
The preserved adult male has a slender body and a snout rounded from above and from the side. Its forearms are slender; the fingers have skin fringes and rounded discs at their tips. The skin is smooth on the back, sides, limbs, thighs and belly. It lives in forests and is nocturnal, associated with ravines and streams. Males call from streamside plants. It is known from the foothills of the Cordillera del Cóndor in Ecuador.
- Rio Negro stream frog Hyloscirtus tolkieni
The described adult female has a greyish-green back with pale reticulation, yellow spots, and black speckles. The holotype was active among branches at night, and the species is known only from its type locality in a national park in Ecuador.