Ololygon perpusilla is a species of frog in the family Hylidae. It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist shrubland. It is threatened by habitat loss. References perpusilla Amphibians of Brazil Endemic fauna of Brazil Taxa named by Adolfo Lutz Taxa named by Bertha Lutz Amphibians described in 1939 Taxonomy articles created by Polbot