Different growths are caused by different animals. Here's what it means if you see one of these on your oak tree ...
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 ...
just one of the 750-plus species of cynipid or gall wasps in North America. Because the asexual adult wasps are extremely small, just â…› to ¼ inches long, you likely won't see them. However ...