This species is known only from the type locality (São Bento), Novo Horizonte, Lauro Muller in Santa Catarina State, and Serra de Araracuara, Guaratuba, in Parana State, southern Brazil, at approximately 800-1,000m asl.
Habitat and Ecology
It occurred on vegetation near forest streams in rainforest, laying eggs on vegetation overhanging the streams in which the larvae developed.
Once somewhat common in areas where it occurred, it has not been seen since 1970 despite repeated searches. The reasons for the decline are unknown.
The habitat in the localities where the species occurred is relatively intact. Its disappearance from apparently suitable habitat is reminiscent of that of other high-altitude frogs in the wet tropics, and chytridiomycosis cannot be ruled out as being the causative agent.
It does not occur in any protected areas. Research to determine its population status and distribution, and actions to protect the original habitat, are needed.
This species was resurrected from the synonymy of Phrynomedusa fimbriata by Cruz (1985).
Paulo Garcia, Magno Vicente Segalla, Débora Silvano 2004. Phrynomedusa appendiculata. In: IUCN 2013