Arcovomer is a genus of frogs in the family Microhylidae. It is monotypic, being represented by the single species Arcovomer passarellii, commonly known as Passarelli's frog. It is endemic to south-eastern Brazil and found in Espírito Santo, Rio de Janeiro, and São Paulo states. Frogs from Espírito Santo may represent another, undescribed species. The name honours Antonio Passarelli who collected the holotype.

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