The taxonomic status of Rana capito is unclear. Allozymes were surveyed for Rana areolata and populations throughout the range of R. capito, including representatives of the three putative subspecies. Fixed differences were exhibited at two loci, supporting the separation of R. capito and R. areolata. The westernmost population of R. capito, in the range of Rana capito sevosa, could be diagnosed from the remaining populations of R. capito. These remaining populations exhibited no substantial genetic divisions. We recommend the resurrection of R. sevosa as a distinct taxon.