Ground Beetle
Scientific Name: Harpalus affinis (or similar Harpalus species)
Order & Family: Order Coleoptera, Family Carabidae
Size: 10 to 12 mm (0.4 to 0.5 inches)

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.
Identified on: 4/27/2026