Phrynopus

Phrynopus is a genus of frogs of the family Craugastoridae. Their common name is Andes frogs. They are endemic to Peru and inhabit the upper humid montane forest and supra-treeline grassland in the Cordillera Oriental, with one record from the Peruvian Cordillera Occidental.
Taxonomy.
The contents and phylogenetic position of "Phrynopus" have long been uncertain, and species once included in this genus have been moved to other genera ("Bryophryne", "Lynchius", "Isodactylus" (now "Hypodactylus"), "Noblella", "Niceforonia", and "Psychrophrynella"). Hedges and colleagues placed it in 2008 in Strabomantidae, subfamily Strabomantinae. Most recently, the genus was transferred into Craugastoridae, subfamily Holoadeninae. However, the AmphibiaWeb keeps "Noblella" in Strabomantidae/Strabomantinae, a family/subfamily no longer recognized by the Amphibian Species of the World.
Description.
"Phrynopus" are small to medium-sized frogs, from snout–vent length in "Phrynopus auriculatus" to in "Phrynopus kauneorum". Head is narrower than the body. Differentiated tympanic membrane and tympanic annulus are usually absent, except in "Phrynopus auriculatus" and "Phrynopus peruanus", two basal species. Dorsum is smooth to pustulate. Venter is smooth or
areolate.
Species.
There are over 30 species in this genus: