Cophixalus cryptotympanum (common name Zweifel's rainforest frog) is a species of frog in the family Microhylidae. It is endemic to Papua New Guinea. Its natural habitat is tropical moist montane forests. References cryptotympanum Amphibians of Papua New Guinea Endemic fauna of Papua New Guinea Taxa named by Richard G. Zweifel Taxonomy articles created by Polbot Amphibians described in 1956