Scolytidae is a family of small, cylindrical and dark brown beetles. They are commonly known as bark beetles, and they exist in numerous species that vary in size, habitat, and behavior. Synonyms for Scolytidae include the term "thumbnail bark beetles," as their size is typically no larger than a human thumbnail. Other synonyms for Scolytidae include phloem beetles, ambrosia beetles, and wood-boring beetles. These synonyms offer a description of their habitat and behavior, as they are often found in the phloem tissue layer of trees, where they bore tunnels and create galleries to lay their eggs. These synonyms help to provide a clear understanding of the characteristics and behavior of this family of beetles.