Longhorned beetles are elongated and cylindrical, with antennae that are at least half the length of the body — sometimes much longer. There are many different species in this family. Often they are smooth, streamlined, and taper toward the back. Many are drab black, gray, or brown, while others mimic wasps with banded patterns of black and yellow or orange or have other colors.
The larvae are pale and grublike and are found inside wood or other plants.