Callulops wilhelmanus is a species of frog in the family Microhylidae. It is endemic to the central mountain ranges of Papua New Guinea. Its natural habitats are dense, primary montane rainforest at elevations of above sea level. It lives on the forest floor. It can also adapt to live in degraded habitats, including rural gardens. It can be locally abundant although it does not typically occur at high densities. References wilhelmanus Amphibians of Papua New Guinea Endemic fauna of Papua New Guinea Taxa named by Arthur Loveridge Amphibians described in 1948 Taxonomy articles created by Polbot