A burrowing insect is an insect that lives underground, often in tunnels or holes. BORER (5 letters) is a type of beetle that feeds on plants and wood, while ANT (3 letters) is a social insect that lives in colonies and builds nests in the ground. Sandflea (8 letters) is a small crustacean that lives in sandy areas and can jump high distances. Diggerwasp (10 letters) is a solitary wasp that digs tunnels in the ground to lay its eggs.