Baja California chorus frog
Some scientists think this is the same species as Pseudacris regilla but other scientists do not.  In 2006, a team of scientists led by Recuero studied the mitochondrial DNA of frogs called Pseudacris regilla and decided that they should be considered three species: Pseudacris regilla in northern California, Pseudacris sierra in southern California, and Pseudacris hypochondriaca in Baja California.  But other scientists say Recuero did not collect enough information.  In 2016, another team of scientists, Duellman, Marion, and Hedges, said that this frog should be in the genus Hyliola instead of the genus Pseudacris.