Introduction: members of this family get their common name from their general habit of occurring on the ground usually beneath something. They are worldwide in distribution and occur throughout most of the United States.
Recognition: Adults about 1/16"-1 3/8" (12-35 mm) long body elongate somewhat flattened in form. Color usually uniformly black and shiny but some species patterned or brightly colored.
Habits: Ground beetles are terrestrial and typically found on the ground usually under something such as stones during the daytime. A few species climb trees in search of food and may be seen during the daytime. Many species and in great numbers come to lights at night. Most species are nocturnal or active at night.