Hyla Regilla is a species of tree frog that is commonly found in the Pacific Northwest region of North America. There are various synonyms that can be used to refer to this species, including the Pacific tree frog, Northwestern tree frog, and Chorus frog. These synonyms are often used interchangeably to describe the same species of frog, with each name reflecting different aspects of its geographic location or physical characteristics. Regardless of what name is used, Hyla Regilla is an important part of the local ecosystem, and is valued for its role in controlling insect populations and providing food for larger predators.