Long-horned beetles can refer to any of a large group of beetles that possess long antennae and tube-shaped bodies. Examples are the Asian long-horned beetle and the valley elderberry longhorn beetle. The Asian long-horned beetle is an invasive species in the United States and a threat to native wildlife.
Asian long-horned beetles are 1 to 1.5 inches long and are black with white spots. Their feet sometimes have a metallic blue color.
The Asian long-horned beetle, also known as the starry sky beetle, originated in China and Korea, and has since made its way to the United States, where it has caused damage to native forests and wildlife. Specifically, the creature targets and kills hardwood species such as birch, elm and maple, and as of 2015, millions of acres in parts of the northern United States and Canada are threatened. Signs of Asian long-horn activity include tree holes the size of dimes and sawdust at the base of trees from the creature's wood burrowing.
Valley elderberry longhorn beetles are partly so named because they tend to inhabit elderberry bushes along streams and rivers, and because elderberry leaves and flowers are a food of choice. They are 1/2- to 1-inch long with very long antennae.