The Longhorn beetles (Cerambycidae), also known as Long-horned or Longicorns (whose larvae are often referred to as roundheaded borers), are a large family of beetles, with over 35,000 species described.

All known longhorn beetle larvae feed on plant tissue such as stems, trunks, or roots of both herbaceous and woody plants, often in injured or weak trees. A few species are serious pests. The larvae, called roundheaded borers, bore into wood, where they can cause extensive damage to either living trees or untreated lumber.

Most species can be observed between April and September.