I have a little bug thing on my hops (Magnum and Santiam) that has been making the leaves go yellow, then brown around the edges. They leave cobwebby stuff on the underside of the leaves, too. Any idea what it is? You can see from the pix that some are bright green but some are also white, they are about 1/4" long max and look a little like a grasshopper although they don't really seem to jump much. (Sorry the close-up pic is blurry, cell phone has rotten macro capabilities) They've done a lot of damage to leaves but so far the main bines seem to still be surviving.