The Cynipid Gall Wasp is a type of insect that belongs to the family Cynipidae. This insect is commonly found in North America, Europe, and Asia. There are several synonyms for the Cynipid Gall Wasp, such as the oak apple wasp, the oak gall wasp, or the oak gallfly. These synonyms are a result of the wasp's behavior to lay eggs in the growing buds of oak trees, which results in the formation of galls, or abnormal growths on the tree's leaves, twigs, and branches. While the Cynipid Gall Wasp may cause damage to oak trees, they are also important for the ecosystem, serving as a food source for other insects and animals.