Bug Identifier
Black Ground Beetle
Community identification

Black Ground Beetle

Harpalus pennsylvanicus

Order & Family
Order: Coleoptera; Family: Carabidae
Size
13 to 25 mm (0.5 to 1.0 inch)
See this bug in the Encyclopedia

Natural Habitat

Fields, gardens, and under debris like stones or logs; often enters homes near doorsteps or windows.

Diet & Feeding

Omnivorous; primarily feeds on other insects, larvae, and various weed seeds.

Behavior Patterns

Nighttime foragers that are strongly attracted to artificial lights; they are fast runners and typically hide in dark, moist areas during the day.

Risks & Benefits

Generally beneficial to the ecosystem as they control pest insect populations and weed seeds; they are harmless to humans, though they may rarely pinch with mandibles if handled roughly.