Agrilus biguttatus is a species of beetle in the family Buprestidae, the jewel beetles. Common names include oak splendour beetle, oak buprestid beetle, and two spotted oak borer. It is native to Europe, North Africa, and Siberia. This beetle is known as a pest that causes damage to oak trees and is a factor in oak decline. The adult beetle can fly several kilometers. It can also be transported to new areas with shipments of wood.