Sphaenorhynchus surdus
family: Hylidae
subfamily: Hylinae

© 2005 Germano Woehl Jr. (1 of 9)
Conservation Status (definitions)
IUCN (Red List) Status Least Concern (LC)
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 occurs in Paraná, Santa Catarina, and Rio Grande do Sul, Brazil, 100-1200 masl.

Habitat and Ecology

It occurs on low bushes surrounding large permanent lakes in open areas.

Breeding occurs in the hot and rainy season and males call from the floating vegetation, generally in permanent ponds. The reproductive mode is probably by means of eggs and exotrophic tadpoles in lentic water (Toledo et al., 2007).


It seems to be an abundant species (Toledo et al., 2007).

Population Trend


Major Threats

It is threatened by water pollution.

Conservation Actions

It occurs in Caxambu State Park, Paraná. It is listed as Vulnerable for Rio Grande de Sul state’s list of threatened species.

Red List Status

Least Concern (LC)


Listed as Least Concern in view of its wide distribution, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

Taxonomic Notes

Some populations formerly considered under Sphaenorhunchus surdus are now allocated to the recently described Sphaenorhynchus caramaschii (Toledo et al., 2007).


Luis Felipe Toledo 2008. Sphaenorhynchus surdus. The IUCN Red List of Threatened Species 2008: e.T56022A11411506. .Downloaded on 23 January 2019


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