Leaves of endemic wiliwili riddled by Erythrina gall wasp damage are pictured on a tree on Kahoolawe in 2008. FOREST AND KIM STARR photo Reinforcements are being called to the front lines of a ...

The invasive gall wasps were first discovered on Oahu in 2005. They spread quickly throughout the state and resulted in the death of thousands of Erythrina trees, including native wiliwili trees.