Researchers have identified two previously unknown tiny frog species in a remote Peruvian mountain area. The amphibians were located in an elfin forest, a cold and misty habitat where trees remain short due to wind and low temperatures. Both species occur above 3,000 metres elevation. One displays concealed red markings on its limbs and groin, while the other shows black markings in similar areas. Their small size and secretive habits allowed them to share the same limited forest patch undetected. The findings indicate ongoing discoveries of wildlife in under-explored regions. Published in PubMed Central, the study classifies the frogs within the Phrynopus group, which consists of small species restricted to the Peruvian Andes. These frogs bypass the tadpole phase, emerging from eggs as miniature adults. The specimens were collected at 3,280 metres in the Cordillera de Yanachaga range inside Yanachaga-Chemillén National Park. The first species is medium-sized within its group and features small bumps on the eyelids, heel and lower leg along with the red patches. The second lacks these bumps and instead has prominent black patches. Both inhabit rare elfin forests near mountain summits that experience persistent cold, wind and moisture. Trees grow stunted and gnarled, with moss and low plants covering the ground. Evidence suggests each species is restricted to this single site, increasing vulnerability to habitat disturbance. Human activity has already altered zones near the park boundary, potentially impacting the frogs despite their location inside protected land. The authors therefore recommend enhanced conservation measures for these mountain forests.
