Bug Identifier
Ground Beetle
Community identification

Ground Beetle

Harpalus affinis (or similar Harpalus species)

Order & Family
Order Coleoptera, Family Carabidae
Size
10 to 12 mm (0.4 to 0.5 inches)
See this bug in the Encyclopedia

Natural Habitat

Typically found in leaf litter, under rocks, in gardens, fields, and urban areas

Diet & Feeding

Omnivorous; feeds on small insects, larvae, and various plant seeds (granivory)

Behavior Patterns

Night-active (nocturnal) hunters that move quickly; they are often attracted to artificial lights at night and may wander indoors through small gaps

Risks & Benefits

Beneficial to ecosystems and gardeners as they prey on agricultural pests like slugs and caterpillars. They are harmless to humans, though they may emit a pungent odor or bite if handled roughly.