<div>Aphids are piercing-sucking insects which include a vast number of species. They have various shapes, colors, and sizes, but are usually small, soft-bodied and pear-shaped with long, thin legs. Aphids are often found feeding in large groups and are slow-moving. They excrete a sticky substance called "honeydew" which will often cover objects below an aphid-infested tree. Aphids do damage when populations become very high, at which point leaves will become curled, distorted, and/or yellow. Growth will be stunted and honeydew will be excreted on objects below the tree. </div><div><br></div><div><strong>Trees Affected by Aphids</strong></div><ul><li>Ash tree</li><li>Maple tree</li><li>Palm tree</li><li>Sycamore tree</li><li>Tulip Tree tree</li><li>Walnut tree</li></ul><div>&nbsp;</div>