Cycloramphus semipalmatus
family: Cycloramphidae
Conservation Status (definitions)
IUCN (Red List) Status Near Threatened (NT)
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Brazil



View distribution map using BerkeleyMapper.

From the IUCN Red List Species Account:


Range Description

This species is known from Serra do Mar in the state of São Paulo, in Brazil, from about 800m asl.

Habitat and Ecology

This species is found under, or on top of, rocks in or next to small forest streams in primary and secondary forest. It presumably has larvae that are found on rocks that are covered with a film of running water, either on exposed rocks in or next to streams, like other members of the genus.


This is a reasonably common species; however, there has been an unexplained decline over its whole range recently. It was once common in Boracéia, but has been considered locally extinct there since 1988.

Population Trend


Major Threats

There is a steel works on the coast that pollutes the water, which might be affecting local populations. The reason for the observed decline is currently unknown, but chytridiomycosis cannot be ruled out.

Conservation Actions

The range of the species includes a few protected areas. Further research into the cause of the recent declines is needed.

Red List Status

Near Threatened (NT)


Listed as Near Threatened because this species is in significant decline (but at a rate of less than 30% over ten years), making the species close to qualifying for Vulnerable.

Taxonomic Notes

This species was removed from the synonymy of Cycloramphus asper by Heyer (1983).


Vanessa Verdade, Ronald Heyer 2004. Cycloramphus semipalmatus. The IUCN Red List of Threatened Species 2004: e.T56379A11456623. .Downloaded on 18 February 2019


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