
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)
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.