Hyliola cadaverina
California Treefrog, California Chorus Frog
family: Hylidae
subfamily: Hylinae
Taxonomic Notes: Duellman and colleagues ( propose resurrecting the unused name Hyliola for western tree frogs (Pseudacris regilla and cadaverina). The western species have been in Pseudacris for only 10 years, so the least destabilizing and likely most robust taxonomic move is to recognize three genera: Acris, Hyliola and Pseudacris. Recuero et al. (2006, Mol Phylog Evol), on the basis of limited mtDNA data and some old allozyme information, divided this taxon into three: P. hypochondrialis in Baja California and southern California, P. sierra in central California, and restricted P. regilla to northwestern California and more northerly regions. However, central Calfornia was poorly sampled and it is impossible to determine the borders of the putative species. Furthermore, there are irregularities in the distribution of mtDNA haplotypes that call the taxonomic decisions into question. The entire complex badly needs to be studied using fine scale sampling and nuclear gene sequences.

© 2007 Dee E. Warenycia (1 of 52)

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Conservation Status (definitions)
IUCN (Red List) Status Least Concern (LC)
NatureServe Status Use NatureServe Explorer to see status.
Other International Status None
National Status None
Regional Status None


View distribution map using BerkeleyMapper.


From the IUCN Red List Species Account:


Range Description

This species occurs from southwestern California, south into northern Baja California Norte, Mexico. It is found from near sea level to about 2,290m asl (Stebbins 1985).

Habitat and Ecology

This species is found in rocky canyons near streams and washes with permanent pools. It requires some shade as it retreats to shaded rock crevices during the day. It ranges from desert and coastal stream-courses to the pine belt in the mountains (Stebbins 1985). It breeds in the quiet water of rocky streams. Eggs are attached to twigs or are loose on the bottom (Stebbins 1972).


This is a relatively common species.

Population Trend


Major Threats

Under natural conditions, solar UV-B radiation reduces embryo survival. The effects of this at the population level remain to be determined (Anzalone et al. 1998). Local populations are impacted by urbanization.

Conservation Actions

This species occurs in San Pedro Martir National Park in Mexico.


Geoffrey Hammerson, Georgina Santos-Barrera 2004. Pseudacris cadaverina. In: IUCN 2014


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