The Delta green ground beetle (Elaphrus viridis) is a species of ground beetle restricted to a small region within Solano County, California. Its color is a metallic-green, usually with bronze spots on its elytra, though some lack these spots. The lack or reduction of circular pits on the elytra helps distinguish it from other ground beetles. Typical adults are about a quarter-inch (0.6 cm) in length. The Delta green ground beetle plays a useful role in its ecosystem by pollinating plants, fruits, and vegetables.