BEETLES

Common Black Ground Beetle, Pterostichus melanarius

Order: Coleoptera (Beetles)

Size: Up to 5⁄8"

Habitat: Gardens, woodlands, fields

Range: Throughout North America

Ground beetles are members of the family Carabidae (known as the “carab beetles”) and consist of thousands of species. Most are shiny black or of iridescent colors with prominent thoraxes, long and thin legs, and narrow heads. Although capable of flight, they typically speed away on foot rather than fly when threatened. The Common Black Ground Beetle was introduced from Europe and is now common in much of North America. Its color is glossy black overall, and the forewings, folded neatly over the back, are grooved. They spend the day hiding under stones and logs and become active at night, pursuing small insects and slugs on the ground or on plants. They are generally considered beneficial in gardens and crops, although they can emit a foul-smelling substance if handled.