The Ground Beetle has thin legs and thin antenna on a head that is smaller than its body. There are more than 2000 species of Ground Beetles in North America and most are shiny black while some are an iridescent color.
Females lay their eggs in the ground and the larvae hatch in the spring. The larvae live just below ground and feed on insects that live underground. At about 2 years old larvae pupate underground and emerge as adults. The adult Ground Beetle will hide during the day and come out at night in search of soft bodied insects to eat.
The Ground Beetle prefers to live outside, closer to their insect food source, but sometimes ventures inside. They are not considered harmful to humans but can present a nuisance if they gather inside. Tossing them back outside where they are more beneficial is usually enough to rid your home if a few have ventured inside.
The Ground Beetle is most active in spring and summer.