Genus Philaenus refers to a group of insects within the family Aphrophoridae, commonly known as spittlebugs or froghoppers. Synonyms for the Genus Philaenus include Aphrophora and Cercopis. These insects are well known for their ability to produce a frothy substance known as spittle or cuckoo spit, which they use as a protective measure against predators. They are found in a wide range of habitats worldwide and play an important role in the food chain as a food source for many other species. While they may be seen as pests in some instances, spittlebugs are also important pollinators and can contribute to the health and diversity of ecosystems.